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Since this is the case, all we can really # say is unknown -- it depends on the patch being installed. If # it is, this changes to `yes'. Without it, it would be `no'. lt_cv_sys_dlopen_deplibs=unknown ;; osf*) # the two cases above should catch all versions of osf <= 5.1. Read # the comments above for what we know about them. # At > 5.1, deplibs are loaded *and* any RPATH in a shared library # is used to find them so we can finally say `yes'. lt_cv_sys_dlopen_deplibs=yes ;; qnx*) lt_cv_sys_dlopen_deplibs=yes ;; solaris*) lt_cv_sys_dlopen_deplibs=yes ;; sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) libltdl_cv_sys_dlopen_deplibs=yes ;; esac ]) if test "$lt_cv_sys_dlopen_deplibs" != yes; then AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1], [Define if the OS needs help to load dependent libraries for dlopen().]) fi ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:542: -1- AU_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [m4_if($#, 0, [LT_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:542: -1- AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [AC_DIAGNOSE([obsolete], [The macro `AC_LTDL_SYS_DLOPEN_DEPLIBS' is obsolete. You should run autoupdate.])dnl m4_if($#, 0, [LT_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:549: -1- AC_DEFUN([LT_SYS_MODULE_EXT], [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl AC_CACHE_CHECK([which extension is used for runtime loadable modules], [libltdl_cv_shlibext], [ module=yes eval libltdl_cv_shlibext=$shrext_cmds ]) if test -n "$libltdl_cv_shlibext"; then m4_pattern_allow([LT_MODULE_EXT])dnl AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"], [Define to the extension used for runtime loadable modules, say, ".so".]) fi ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:565: -1- AU_DEFUN([AC_LTDL_SHLIBEXT], [m4_if($#, 0, [LT_SYS_MODULE_EXT], [LT_SYS_MODULE_EXT($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:565: -1- AC_DEFUN([AC_LTDL_SHLIBEXT], [AC_DIAGNOSE([obsolete], [The macro `AC_LTDL_SHLIBEXT' is obsolete. You should run autoupdate.])dnl m4_if($#, 0, [LT_SYS_MODULE_EXT], [LT_SYS_MODULE_EXT($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:572: -1- AC_DEFUN([LT_SYS_MODULE_PATH], [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl AC_CACHE_CHECK([which variable specifies run-time module search path], [lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"]) if test -n "$lt_cv_module_path_var"; then m4_pattern_allow([LT_MODULE_PATH_VAR])dnl AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"], [Define to the name of the environment variable that determines the run-time module search path.]) fi ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:584: -1- AU_DEFUN([AC_LTDL_SHLIBPATH], [m4_if($#, 0, [LT_SYS_MODULE_PATH], [LT_SYS_MODULE_PATH($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:584: -1- AC_DEFUN([AC_LTDL_SHLIBPATH], [AC_DIAGNOSE([obsolete], [The macro `AC_LTDL_SHLIBPATH' is obsolete. You should run autoupdate.])dnl m4_if($#, 0, [LT_SYS_MODULE_PATH], [LT_SYS_MODULE_PATH($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:591: -1- AC_DEFUN([LT_SYS_DLSEARCH_PATH], [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl AC_CACHE_CHECK([for the default library search path], [lt_cv_sys_dlsearch_path], [lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"]) if test -n "$lt_cv_sys_dlsearch_path"; then sys_dlsearch_path= for dir in $lt_cv_sys_dlsearch_path; do if test -z "$sys_dlsearch_path"; then sys_dlsearch_path="$dir" else sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir" fi done m4_pattern_allow([LT_DLSEARCH_PATH])dnl AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"], [Define to the system default library search path.]) fi ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:612: -1- AU_DEFUN([AC_LTDL_SYSSEARCHPATH], [m4_if($#, 0, [LT_SYS_DLSEARCH_PATH], [LT_SYS_DLSEARCH_PATH($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:612: -1- AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [AC_DIAGNOSE([obsolete], [The macro `AC_LTDL_SYSSEARCHPATH' is obsolete. You should run autoupdate.])dnl m4_if($#, 0, [LT_SYS_DLSEARCH_PATH], [LT_SYS_DLSEARCH_PATH($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:638: -1- AC_DEFUN([LT_LIB_DLLOAD], [m4_pattern_allow([^LT_DLLOADERS$]) LT_DLLOADERS= AC_SUBST([LT_DLLOADERS]) AC_LANG_PUSH([C]) LIBADD_DLOPEN= AC_SEARCH_LIBS([dlopen], [dl], [AC_DEFINE([HAVE_LIBDL], [1], [Define if you have the libdl library or equivalent.]) if test "$ac_cv_search_dlopen" != "none required" ; then LIBADD_DLOPEN="-ldl" fi libltdl_cv_lib_dl_dlopen="yes" LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"], [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H # include #endif ]], [[dlopen(0, 0);]])], [AC_DEFINE([HAVE_LIBDL], [1], [Define if you have the libdl library or equivalent.]) libltdl_cv_func_dlopen="yes" LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"], [AC_CHECK_LIB([svld], [dlopen], [AC_DEFINE([HAVE_LIBDL], [1], [Define if you have the libdl library or equivalent.]) LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes" LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])]) if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes then lt_save_LIBS="$LIBS" LIBS="$LIBS $LIBADD_DLOPEN" AC_CHECK_FUNCS([dlerror]) LIBS="$lt_save_LIBS" fi AC_SUBST([LIBADD_DLOPEN]) LIBADD_SHL_LOAD= AC_CHECK_FUNC([shl_load], [AC_DEFINE([HAVE_SHL_LOAD], [1], [Define if you have the shl_load function.]) LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"], [AC_CHECK_LIB([dld], [shl_load], [AC_DEFINE([HAVE_SHL_LOAD], [1], [Define if you have the shl_load function.]) LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la" LIBADD_SHL_LOAD="-ldld"])]) AC_SUBST([LIBADD_SHL_LOAD]) case $host_os in darwin[[1567]].*) # We only want this for pre-Mac OS X 10.4. AC_CHECK_FUNC([_dyld_func_lookup], [AC_DEFINE([HAVE_DYLD], [1], [Define if you have the _dyld_func_lookup function.]) LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"]) ;; beos*) LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la" ;; cygwin* | mingw* | os2* | pw32*) AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include ]]) LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la" ;; esac AC_CHECK_LIB([dld], [dld_link], [AC_DEFINE([HAVE_DLD], [1], [Define if you have the GNU dld library.]) LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"]) AC_SUBST([LIBADD_DLD_LINK]) m4_pattern_allow([^LT_DLPREOPEN$]) LT_DLPREOPEN= if test -n "$LT_DLLOADERS" then for lt_loader in $LT_DLLOADERS; do LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader " done AC_DEFINE([HAVE_LIBDLLOADER], [1], [Define if libdlloader will be built on this platform]) fi AC_SUBST([LT_DLPREOPEN]) dnl This isn't used anymore, but set it for backwards compatibility LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD" AC_SUBST([LIBADD_DL]) AC_LANG_POP ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:731: -1- AU_DEFUN([AC_LTDL_DLLIB], [m4_if($#, 0, [LT_LIB_DLLOAD], [LT_LIB_DLLOAD($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:731: -1- AC_DEFUN([AC_LTDL_DLLIB], [AC_DIAGNOSE([obsolete], [The macro `AC_LTDL_DLLIB' is obsolete. You should run autoupdate.])dnl m4_if($#, 0, [LT_LIB_DLLOAD], [LT_LIB_DLLOAD($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:739: -1- AC_DEFUN([LT_SYS_SYMBOL_USCORE], [m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl AC_CACHE_CHECK([for _ prefix in compiled symbols], [lt_cv_sys_symbol_underscore], [lt_cv_sys_symbol_underscore=no cat > conftest.$ac_ext <<_LT_EOF void nm_test_func(){} int main(){nm_test_func;return 0;} _LT_EOF if AC_TRY_EVAL(ac_compile); then # Now try to grab the symbols. ac_nlist=conftest.nm if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then # See whether the symbols have a leading underscore. if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then lt_cv_sys_symbol_underscore=yes else if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then : else echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD fi fi else echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD fi else echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD cat conftest.c >&AS_MESSAGE_LOG_FD fi rm -rf conftest* ]) sys_symbol_underscore=$lt_cv_sys_symbol_underscore AC_SUBST([sys_symbol_underscore]) ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:776: -1- AU_DEFUN([AC_LTDL_SYMBOL_USCORE], [m4_if($#, 0, [LT_SYS_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:776: -1- AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [AC_DIAGNOSE([obsolete], [The macro `AC_LTDL_SYMBOL_USCORE' is obsolete. You should run autoupdate.])dnl m4_if($#, 0, [LT_SYS_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:783: -1- AC_DEFUN([LT_FUNC_DLSYM_USCORE], [AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl if test x"$lt_cv_sys_symbol_underscore" = xyes; then if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then AC_CACHE_CHECK([whether we have to add an underscore for dlsym], [libltdl_cv_need_uscore], [libltdl_cv_need_uscore=unknown save_LIBS="$LIBS" LIBS="$LIBS $LIBADD_DLOPEN" _LT_TRY_DLOPEN_SELF( [libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes], [], [libltdl_cv_need_uscore=cross]) LIBS="$save_LIBS" ]) fi fi if test x"$libltdl_cv_need_uscore" = xyes; then AC_DEFINE([NEED_USCORE], [1], [Define if dlsym() requires a leading underscore in symbol names.]) fi ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:808: -1- AU_DEFUN([AC_LTDL_DLSYM_USCORE], [m4_if($#, 0, [LT_FUNC_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltdl.m4:808: -1- AC_DEFUN([AC_LTDL_DLSYM_USCORE], [AC_DIAGNOSE([obsolete], [The macro `AC_LTDL_DLSYM_USCORE' is obsolete. You should run autoupdate.])dnl m4_if($#, 0, [LT_FUNC_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE($@)])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltoptions.m4:14: -1- AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltoptions.m4:111: -1- AU_DEFUN([AC_LIBTOOL_DLOPEN], [_LT_SET_OPTION([LT_INIT], [dlopen]) AC_DIAGNOSE([obsolete], [$0: Remove this warning and the call to _LT_SET_OPTION when you put the `dlopen' option into LT_INIT's first parameter.]) ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltoptions.m4:111: -1- AC_DEFUN([AC_LIBTOOL_DLOPEN], [AC_DIAGNOSE([obsolete], [The macro `AC_LIBTOOL_DLOPEN' is obsolete. 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You should run autoupdate.])dnl _LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install]) AC_DIAGNOSE([obsolete], [$0: Remove this warning and the call to _LT_SET_OPTION when you put the `fast-install' option into LT_INIT's first parameter.]) ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltoptions.m4:310: -1- AU_DEFUN([AC_DISABLE_FAST_INSTALL], [_LT_SET_OPTION([LT_INIT], [disable-fast-install]) AC_DIAGNOSE([obsolete], [$0: Remove this warning and the call to _LT_SET_OPTION when you put the `disable-fast-install' option into LT_INIT's first parameter.]) ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltoptions.m4:310: -1- AC_DEFUN([AC_DISABLE_FAST_INSTALL], [AC_DIAGNOSE([obsolete], [The macro `AC_DISABLE_FAST_INSTALL' is obsolete. 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You should run autoupdate.])dnl _LT_SET_OPTION([LT_INIT], [pic-only]) AC_DIAGNOSE([obsolete], [$0: Remove this warning and the call to _LT_SET_OPTION when you put the `pic-only' option into LT_INIT's first parameter.]) ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltsugar.m4:13: -1- AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/ltversion.m4:18: -1- AC_DEFUN([LTVERSION_VERSION], [macro_version='2.4' macro_revision='1.3293' _LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?]) _LT_DECL(, macro_revision, 0) ]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:36: -1- AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:40: -1- AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:41: -1- AC_DEFUN([_LT_AC_SHELL_INIT]) 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m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:88: -1- AC_DEFUN([AC_LIBTOOL_LANG_RC_CONFIG]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:89: -1- AC_DEFUN([_LT_AC_LANG_RC_CONFIG]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:90: -1- AC_DEFUN([AC_LIBTOOL_CONFIG]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:91: -1- AC_DEFUN([_LT_AC_FILE_LTDLL_C]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:93: -1- AC_DEFUN([_LT_AC_PROG_CXXCPP]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:96: -1- AC_DEFUN([_LT_PROG_F77]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:97: -1- AC_DEFUN([_LT_PROG_FC]) m4trace:/home/user/libremesh21-v0/staging_dir/host/share/aclocal/lt~obsolete.m4:98: -1- AC_DEFUN([_LT_PROG_CXX]) m4trace:acinclude.m4:39: -1- AC_DEFUN([MPFR_CONFIGS], [ AC_REQUIRE([AC_OBJEXT]) AC_REQUIRE([MPFR_CHECK_LIBM]) AC_REQUIRE([MPFR_CHECK_LIBQUADMATH]) AC_REQUIRE([AC_HEADER_TIME]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl Features for the MPFR shared cache. This needs to be done dnl quite early since this may change CC, CFLAGS and LIBS, which dnl may affect the other tests. if test "$enable_shared_cache" = yes; then dnl Prefer ISO C11 threads (as in mpfr-thread.h). MPFR_CHECK_C11_THREAD() if test "$mpfr_c11_thread_ok" != yes; then dnl Check for POSIX threads. Since the AX_PTHREAD macro is not standard dnl (it is provided by autoconf-archive), we need to detect whether it dnl is left unexpanded, otherwise the configure script won't fail and dnl "make distcheck" won't give any error, yielding buggy tarballs! dnl The \b is necessary to avoid an error with recent ax_pthread.m4 dnl (such as with Debian's autoconf-archive 20160320-1), which contains dnl AX_PTHREAD_ZOS_MISSING, etc. It is not documented, but see: dnl https://lists.gnu.org/archive/html/autoconf/2015-03/msg00011.html dnl dnl Note: each time a change is done in m4_pattern_forbid, autogen.sh dnl should be tested with and without ax_pthread.m4 availability (in dnl the latter case, there should be an error). m4_pattern_forbid([AX_PTHREAD\b]) AX_PTHREAD([]) if test "$ax_pthread_ok" = yes; then CC="$PTHREAD_CC" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" LIBS="$LIBS $PTHREAD_LIBS" dnl Do a compilation test, as this is currently not done by AX_PTHREAD. dnl Moreover, MPFR needs pthread_rwlock_t, which is conditionally defined dnl in glibc's bits/pthreadtypes.h (via ), not sure why... AC_MSG_CHECKING([for pthread_rwlock_t]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ pthread_rwlock_t lock; (void) lock; ]])], [AC_MSG_RESULT([yes]) mpfr_pthread_ok=yes], [AC_MSG_RESULT([no]) mpfr_pthread_ok=no]) else mpfr_pthread_ok=no fi fi AC_MSG_CHECKING(if shared cache can be supported) if test "$mpfr_c11_thread_ok" = yes; then AC_MSG_RESULT([yes, with ISO C11 threads]) elif test "$mpfr_pthread_ok" = yes; then AC_MSG_RESULT([yes, with pthread]) else AC_MSG_RESULT(no) AC_MSG_ERROR([shared cache needs C11 threads or pthread support]) fi fi dnl End of features for the MPFR shared cache. AC_CHECK_HEADER([limits.h],, AC_MSG_ERROR([limits.h not found])) AC_CHECK_HEADER([float.h],, AC_MSG_ERROR([float.h not found])) AC_CHECK_HEADER([string.h],, AC_MSG_ERROR([string.h not found])) dnl Check for locales AC_CHECK_HEADERS([locale.h]) dnl Check for wide characters (wchar_t and wint_t) AC_CHECK_HEADERS([wchar.h]) dnl Check for stdargs AC_CHECK_HEADER([stdarg.h],[AC_DEFINE([HAVE_STDARG],1,[Define if stdarg])], [AC_CHECK_HEADER([varargs.h],, AC_MSG_ERROR([stdarg.h or varargs.h not found]))]) dnl sys/fpu.h - MIPS specific AC_CHECK_HEADERS([sys/time.h sys/fpu.h]) dnl Android has a , but not the following members. AC_CHECK_MEMBERS([struct lconv.decimal_point, struct lconv.thousands_sep],,, [#include ]) dnl Check how to get `alloca' AC_FUNC_ALLOCA dnl va_copy macro AC_MSG_CHECKING([how to copy va_list]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ va_list ap1, ap2; va_copy(ap1, ap2); ]])], [ AC_MSG_RESULT([va_copy]) AC_DEFINE(HAVE_VA_COPY) ], [AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ va_list ap1, ap2; __va_copy(ap1, ap2); ]])], [AC_DEFINE([HAVE___VA_COPY]) AC_MSG_RESULT([__va_copy])], [AC_MSG_RESULT([memcpy])])]) dnl FIXME: The functions memmove, memset and strtol are really needed by dnl MPFR, but if they are implemented as macros, this is also OK (in our dnl case). So, we do not return an error, but their tests are currently dnl useless. dnl Moreover, for memmove and memset, when gcc -Werror is used, these dnl functions are considered to be missing because of a "conflicting dnl types for built-in function" error. Possible workarounds if the dnl results of this test are used (thus one doesn't want an error): dnl * If "$GCC" is set, disable built-ins by adding -fno-builtin dnl to $CFLAGS for this test (this would yield a failure if such dnl functions are defined only as built-ins, but does this occur dnl in practice?). dnl * Enable -Werror only for the main compilation (and possibly dnl some particular tests) via a new configure option. dnl gettimeofday is not defined for MinGW AC_CHECK_FUNCS([memmove memset setlocale strtol gettimeofday signal]) dnl We cannot use AC_CHECK_FUNCS on sigaction, because while this dnl function may be provided by the C library, its prototype and dnl associated structure may not be available, e.g. when compiling dnl with "gcc -std=c99". AC_MSG_CHECKING(for sigaction and its associated structure) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include static int f (int (*func)(int, const struct sigaction *, struct sigaction *)) { return 0; } ]], [[ return f(sigaction); ]])], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_SIGACTION, 1, [Define if you have a working sigaction function.]) ],[AC_MSG_RESULT(no)]) dnl check for long long AC_CHECK_TYPE([long long int], AC_DEFINE(HAVE_LONG_LONG, 1, [Define if compiler supports long long]),,) dnl intmax_t is C99 AC_CHECK_TYPES([intmax_t]) if test "$ac_cv_type_intmax_t" = yes; then AC_CACHE_CHECK([for working INTMAX_MAX], mpfr_cv_have_intmax_max, [ saved_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$srcdir/src" AC_COMPILE_IFELSE([AC_LANG_PROGRAM( [[#include "mpfr-intmax.h"]], [[intmax_t x = INTMAX_MAX; (void) x;]] )], mpfr_cv_have_intmax_max=yes, mpfr_cv_have_intmax_max=no) CPPFLAGS="$saved_CPPFLAGS" ]) if test "$mpfr_cv_have_intmax_max" = "yes"; then AC_DEFINE(MPFR_HAVE_INTMAX_MAX,1,[Define if you have a working INTMAX_MAX.]) fi AC_CACHE_CHECK([for working printf length modifier for intmax_t], mpfr_cv_printf_maxlm, [ saved_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$srcdir/src" for modifier in j ll l do AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include #include #include "mpfr-intmax.h" ]],[[ char s[64]; sprintf (s, "%${modifier}d %${modifier}u", (intmax_t) -17, (uintmax_t) 42); return strcmp (s, "-17 42") != 0; ]])], mpfr_cv_printf_maxlm=${modifier}; break, mpfr_cv_printf_maxlm=none, dnl We assume that j is working when cross-compiling. mpfr_cv_printf_maxlm=j; break ) done CPPFLAGS="$saved_CPPFLAGS" ]) if test "$mpfr_cv_printf_maxlm" != "none"; then AC_DEFINE_UNQUOTED([MPFR_PRINTF_MAXLM],["$mpfr_cv_printf_maxlm"], [Define to a working printf length modifier for intmax_t]) fi fi AC_CHECK_TYPE( [union fpc_csr], AC_DEFINE(HAVE_FPC_CSR,1,[Define if union fpc_csr is available]), , [ #if HAVE_SYS_FPU_H # include #endif ]) dnl Check for _Noreturn function specifier (ISO C11) AC_CACHE_CHECK([for _Noreturn], mpfr_cv_have_noreturn, [ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[_Noreturn void foo(int);]])], mpfr_cv_have_noreturn=yes, mpfr_cv_have_noreturn=no) ]) if test "$mpfr_cv_have_noreturn" = "yes"; then AC_DEFINE(MPFR_HAVE_NORETURN,1,[Define if the _Noreturn function specifier is supported.]) fi dnl Check for __builtin_unreachable AC_CACHE_CHECK([for __builtin_unreachable], mpfr_cv_have_builtin_unreachable, [ AC_LINK_IFELSE([AC_LANG_PROGRAM( [[int x;]], [[if (x) __builtin_unreachable(); ]] )], mpfr_cv_have_builtin_unreachable=yes, mpfr_cv_have_builtin_unreachable=no) ]) if test "$mpfr_cv_have_builtin_unreachable" = "yes"; then AC_DEFINE(MPFR_HAVE_BUILTIN_UNREACHABLE, 1, [Define if the __builtin_unreachable GCC built-in is supported.]) fi dnl Check for attribute constructor and destructor MPFR_CHECK_CONSTRUCTOR_ATTR() dnl Check for fesetround AC_CACHE_CHECK([for fesetround], mpfr_cv_have_fesetround, [ saved_LIBS="$LIBS" LIBS="$LIBS $MPFR_LIBM" AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[fesetround(FE_TONEAREST);]])], mpfr_cv_have_fesetround=yes, mpfr_cv_have_fesetround=no) LIBS="$saved_LIBS" ]) if test "$mpfr_cv_have_fesetround" = "yes"; then AC_DEFINE(MPFR_HAVE_FESETROUND,1,[Define if you have the `fesetround' function via the header file.]) fi dnl Check for gcc float-conversion bug; if need be, -ffloat-store is used to dnl force the conversion to the destination type when a value is stored to dnl a variable (see ISO C99 standard 5.1.2.3#13, 6.3.1.5#2, 6.3.1.8#2). This dnl is important concerning the exponent range. Note that this doesn't solve dnl the double-rounding problem. if test -n "$GCC"; then AC_CACHE_CHECK([for gcc float-conversion bug], mpfr_cv_gcc_floatconv_bug, [ saved_LIBS="$LIBS" LIBS="$LIBS $MPFR_LIBM" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #ifdef MPFR_HAVE_FESETROUND #include #endif static double get_max (void); int main (void) { double x = 0.5; double y; int i; for (i = 1; i <= 11; i++) x *= x; if (x != 0) return 1; #ifdef MPFR_HAVE_FESETROUND /* Useful test for the G4 PowerPC */ fesetround(FE_TOWARDZERO); x = y = get_max (); x *= 2.0; if (x != y) return 1; #endif return 0; } static double get_max (void) { static volatile double d = DBL_MAX; return d; } ]])], [mpfr_cv_gcc_floatconv_bug="no"], [mpfr_cv_gcc_floatconv_bug="yes, use -ffloat-store"], [mpfr_cv_gcc_floatconv_bug="cannot test, use -ffloat-store"]) LIBS="$saved_LIBS" ]) if test "$mpfr_cv_gcc_floatconv_bug" != "no"; then CFLAGS="$CFLAGS -ffloat-store" fi fi dnl Check if subnormal (denormalized) numbers are supported dnl for the binary64 format, the smallest normal number is 2^(-1022) dnl for the binary32 format, the smallest normal number is 2^(-126) AC_CACHE_CHECK([for subnormal double-precision numbers], mpfr_cv_have_denorms, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include int main (void) { double x = 2.22507385850720138309e-308; fprintf (stderr, "%e\n", x / 2.0); return 2.0 * (double) (x / 2.0) != x; } ]])], [mpfr_cv_have_denorms="yes"], [mpfr_cv_have_denorms="no"], [mpfr_cv_have_denorms="cannot test, assume no"]) ]) if test "$mpfr_cv_have_denorms" = "yes"; then AC_DEFINE(HAVE_DENORMS,1,[Define if subnormal (denormalized) doubles work.]) fi AC_CACHE_CHECK([for subnormal single-precision numbers], mpfr_cv_have_denorms_flt, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include int main (void) { float x = 1.17549435082229e-38; fprintf (stderr, "%e\n", x / 2.0); return 2.0 * (float) (x / 2.0) != x; } ]])], [mpfr_cv_have_denorms_flt="yes"], [mpfr_cv_have_denorms_flt="no"], [mpfr_cv_have_denorms_flt="cannot test, assume no"]) ]) if test "$mpfr_cv_have_denorms_flt" = "yes"; then AC_DEFINE(HAVE_DENORMS_FLT,1, [Define if subnormal (denormalized) floats work.]) fi dnl Check if signed zeros are supported. Note: the test will fail dnl if the division by 0 generates a trap. AC_CACHE_CHECK([for signed zeros], mpfr_cv_have_signedz, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main (void) { return 1.0 / 0.0 == 1.0 / -0.0; } ]])], [mpfr_cv_have_signedz="yes"], [mpfr_cv_have_signedz="no"], [mpfr_cv_have_signedz="cannot test, assume no"]) ]) if test "$mpfr_cv_have_signedz" = "yes"; then AC_DEFINE(HAVE_SIGNEDZ,1,[Define if signed zeros are supported.]) fi dnl Check the FP division by 0 fails (e.g. on a non-IEEE-754 platform). dnl In such a case, MPFR_ERRDIVZERO is defined to disable the tests dnl involving a FP division by 0. dnl For the developers: to check whether all these tests are disabled, dnl configure MPFR with "-DMPFR_TESTS_FPE_DIV -DMPFR_ERRDIVZERO". AC_CACHE_CHECK([if the FP division by 0 fails], mpfr_cv_errdivzero, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main (void) { volatile double d = 0.0, x; x = 0.0 / d; x = 1.0 / d; (void) x; return 0; } ]])], [mpfr_cv_errdivzero="no"], [mpfr_cv_errdivzero="yes"], [mpfr_cv_errdivzero="cannot test, assume no"]) ]) if test "$mpfr_cv_errdivzero" = "yes"; then AC_DEFINE(MPFR_ERRDIVZERO,1,[Define if the FP division by 0 fails.]) AC_MSG_WARN([The floating-point division by 0 fails instead of]) AC_MSG_WARN([returning a special value: NaN or infinity. Tests]) AC_MSG_WARN([involving a FP division by 0 will be disabled.]) fi dnl Check whether NAN != NAN (as required by the IEEE-754 standard, dnl but not by the ISO C standard). For instance, this is false with dnl MIPSpro 7.3.1.3m under IRIX64. By default, assume this is true. AC_CACHE_CHECK([if NAN == NAN], mpfr_cv_nanisnan, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #ifndef NAN # define NAN (0.0/0.0) #endif int main (void) { double d; d = NAN; return d != d; } ]])], [mpfr_cv_nanisnan="yes"], [mpfr_cv_nanisnan="no"], [mpfr_cv_nanisnan="cannot test, assume no"]) ]) if test "$mpfr_cv_nanisnan" = "yes"; then AC_DEFINE(MPFR_NANISNAN,1,[Define if NAN == NAN.]) AC_MSG_WARN([The test NAN != NAN is false. The probable reason is that]) AC_MSG_WARN([your compiler optimizes floating-point expressions in an]) AC_MSG_WARN([unsafe way because some option, such as -ffast-math or]) AC_MSG_WARN([-fast (depending on the compiler), has been used. You]) AC_MSG_WARN([should NOT use such an option, otherwise MPFR functions]) AC_MSG_WARN([such as mpfr_get_d and mpfr_set_d may return incorrect]) AC_MSG_WARN([results on special FP numbers (e.g. NaN or signed zeros).]) AC_MSG_WARN([If you did not use such an option, please send us a bug]) AC_MSG_WARN([report so that we can try to find a workaround for your]) AC_MSG_WARN([platform and/or document the behavior.]) fi dnl Check if the chars '0' to '9' are consecutive values AC_MSG_CHECKING([if charset has consecutive values]) AC_RUN_IFELSE([AC_LANG_PROGRAM([[ char *number = "0123456789"; char *lower = "abcdefghijklmnopqrstuvwxyz"; char *upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; ]],[[ int i; unsigned char *p; for (p = (unsigned char*) number, i = 0; i < 9; i++) if ( (*p)+1 != *(p+1) ) return 1; for (p = (unsigned char*) lower, i = 0; i < 25; i++) if ( (*p)+1 != *(p+1) ) return 1; for (p = (unsigned char*) upper, i = 0; i < 25; i++) if ( (*p)+1 != *(p+1) ) return 1; ]])], [AC_MSG_RESULT(yes)],[ AC_MSG_RESULT(no) AC_DEFINE(MPFR_NO_CONSECUTIVE_CHARSET,1,[Charset is not consecutive]) ], [AC_MSG_RESULT(cannot test)]) dnl Must be checked with the LIBM dnl but we don't want to add the LIBM to MPFR dependency. dnl Can't use AC_CHECK_FUNCS since the function may be in LIBM but dnl not exported in math.h saved_LIBS="$LIBS" LIBS="$LIBS $MPFR_LIBM" dnl AC_CHECK_FUNCS([round trunc floor ceil nearbyint]) AC_MSG_CHECKING(for math/round) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include static int f (double (*func)(double)) { return 0; } ]], [[ return f(round); ]])], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_ROUND, 1,[Have ISO C99 round function]) ],[AC_MSG_RESULT(no)]) AC_MSG_CHECKING(for math/trunc) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include static int f (double (*func)(double)) { return 0; } ]], [[ return f(trunc); ]])], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_TRUNC, 1,[Have ISO C99 trunc function]) ],[AC_MSG_RESULT(no)]) AC_MSG_CHECKING(for math/floor) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include static int f (double (*func)(double)) { return 0; } ]], [[ return f(floor); ]])], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_FLOOR, 1,[Have ISO C99 floor function]) ],[AC_MSG_RESULT(no)]) AC_MSG_CHECKING(for math/ceil) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include static int f (double (*func)(double)) { return 0; } ]], [[ return f(ceil); ]])], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_CEIL, 1,[Have ISO C99 ceil function]) ],[AC_MSG_RESULT(no)]) AC_MSG_CHECKING(for math/nearbyint) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include static int f (double (*func)(double)) { return 0; } ]], [[ return f(nearbyint); ]])], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_NEARBYINT, 1,[Have ISO C99 nearbyint function]) ],[AC_MSG_RESULT(no)]) dnl Check if _mulx_u64 is provided dnl Note: This intrinsic is not standard. We need a run because dnl it may be provided but not working as expected (with ICC 15, dnl one gets an "Illegal instruction"). AC_MSG_CHECKING([for _mulx_u64]) AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ unsigned long long h1, h2; _mulx_u64(17, 42, &h1); _mulx_u64(-1, -1, &h2); return h1 == 0 && h2 == -2 ? 0 : 1; ]])], [AC_MSG_RESULT(yes) AC_DEFINE(HAVE_MULX_U64, 1,[Have a working _mulx_u64 function]) ], [AC_MSG_RESULT(no) ], [AC_MSG_RESULT([cannot test, assume no]) ]) LIBS="$saved_LIBS" dnl Now try to check the long double format MPFR_C_LONG_DOUBLE_FORMAT dnl Check if thread-local variables are supported. dnl At least two problems can occur in practice: dnl 1. The compilation fails, e.g. because the compiler doesn't know dnl about the __thread keyword. dnl 2. The compilation succeeds, but the system doesn't support TLS or dnl there is some ld configuration problem. One of the effects can dnl be that thread-local variables always evaluate to 0. So, it is dnl important to run the test below. if test "$enable_thread_safe" != no; then AC_MSG_CHECKING(for TLS support using C11) saved_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$srcdir/src" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #define MPFR_USE_THREAD_SAFE 1 #define MPFR_USE_C11_THREAD_SAFE 1 #include "mpfr-thread.h" MPFR_THREAD_ATTR int x = 17; int main (void) { return x != 17; } ]])], [AC_MSG_RESULT(yes) AC_DEFINE([MPFR_USE_THREAD_SAFE],1,[Build MPFR as thread safe]) AC_DEFINE([MPFR_USE_C11_THREAD_SAFE],1,[Build MPFR as thread safe using C11]) tls_c11_support=yes enable_thread_safe=yes ], [AC_MSG_RESULT(no) ], [AC_MSG_RESULT([cannot test, assume no]) ]) CPPFLAGS="$saved_CPPFLAGS" if test "$tls_c11_support" != "yes" then AC_MSG_CHECKING(for TLS support) saved_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$srcdir/src" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #define MPFR_USE_THREAD_SAFE 1 #include "mpfr-thread.h" MPFR_THREAD_ATTR int x = 17; int main (void) { return x != 17; } ]])], [AC_MSG_RESULT(yes) AC_DEFINE([MPFR_USE_THREAD_SAFE],1,[Build MPFR as thread safe]) enable_thread_safe=yes ], [AC_MSG_RESULT(no) if test "$enable_thread_safe" = yes; then AC_MSG_ERROR([please configure with --disable-thread-safe]) fi ], [if test "$enable_thread_safe" = yes; then AC_MSG_RESULT([cannot test, assume yes]) AC_DEFINE([MPFR_USE_THREAD_SAFE],1,[Build MPFR as thread safe]) else AC_MSG_RESULT([cannot test, assume no]) fi ]) CPPFLAGS="$saved_CPPFLAGS" fi fi dnl Check if decimal floats are available. dnl For the different cases, we try to use values that will not be returned dnl by build tools. For instance, 1 must not be used as it can be returned dnl by ld in case of link failure. if test "$enable_decimal_float" != no; then AC_MSG_CHECKING(if compiler knows _Decimal64) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[_Decimal64 x;]])], [AC_MSG_RESULT(yes) AC_MSG_CHECKING(decimal float format) AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ volatile _Decimal64 x = 1; union { double d; _Decimal64 d64; } y; if (x != x) return 83; y.d64 = 1234567890123456.0dd; return y.d == 0.14894469406741037E-123 ? 80 : y.d == 0.59075095508629822E-68 ? 81 : 82; ]])], [AC_MSG_RESULT(internal error) AC_MSG_FAILURE(unexpected exit status 0)], [d64_exit_status=$? case "$d64_exit_status" in 80) AC_MSG_RESULT(DPD) AC_DEFINE([DPD_FORMAT],1,[DPD format]) AC_DEFINE([MPFR_WANT_DECIMAL_FLOATS],1, [Build decimal float functions]) ;; 81) AC_MSG_RESULT(BID) AC_DEFINE([MPFR_WANT_DECIMAL_FLOATS],1, [Build decimal float functions]) ;; 82) AC_MSG_RESULT(neither DPD nor BID) if test "$enable_decimal_float" = yes; then AC_MSG_ERROR([unsupported decimal float format. Please build MPFR without --enable-decimal-float.]) fi ;; *) AC_MSG_RESULT(unknown (exit status $d64_exit_status)) if test "$enable_decimal_float" = yes; then AC_MSG_ERROR([internal or link error. Please build MPFR without --enable-decimal-float.]) fi ;; esac], [AC_MSG_RESULT(assuming DPD) AC_DEFINE([DPD_FORMAT],1,[]) AC_DEFINE([MPFR_WANT_DECIMAL_FLOATS],1, [Build decimal float functions])]) ], [AC_MSG_RESULT(no) if test "$enable_decimal_float" = yes; then AC_MSG_ERROR([compiler doesn't know _Decimal64 (ISO/IEC TR 24732). Please use another compiler or build MPFR without --enable-decimal-float.]) fi]) fi dnl Check if __float128 is available. We also require the compiler dnl to support C99 constants (this prevents the __float128 support dnl with GCC's -std=c90, but who cares?). dnl Note: We use AC_LINK_IFELSE instead of AC_COMPILE_IFELSE since an dnl error may occur only at link time, such as under NetBSD: dnl https://mail-index.netbsd.org/pkgsrc-users/2018/02/02/msg026220.html dnl https://mail-index.netbsd.org/pkgsrc-users/2018/02/05/msg026238.html dnl By using volatile and making the exit code depend on the value of dnl this variable, we also make sure that optimization doesn't make dnl the "undefined reference" error disappear. if test "$enable_float128" != no; then AC_MSG_CHECKING(if __float128 with hex constants is supported) AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ volatile __float128 x = 0x1.fp+16383q; return x == 0; ]])], [AC_MSG_RESULT(yes) AC_DEFINE([MPFR_WANT_FLOAT128],1,[Build float128 functions])], [AC_MSG_RESULT(no) if test "$enable_float128" = yes; then AC_MSG_ERROR([compiler doesn't know __float128 with C99 constants Please use another compiler or build MPFR without --enable-float128.]) fi]) fi dnl Check if Static Assertions are supported. AC_MSG_CHECKING(for Static Assertion support) saved_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$srcdir/src" AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #define MPFR_USE_STATIC_ASSERT 1 #include "mpfr-sassert.h" /* Test if Static Assertions work */ MPFR_DECL_STATIC_ASSERT(sizeof(char) <= sizeof(int)); int main (void) { MPFR_DECL_STATIC_ASSERT(sizeof(int) <= sizeof(long)); int x; (void) (x = 1); /* cast to void: avoid a warning, at least with GCC */ /* Test of the macro after a declaraction and a statement. */ MPFR_STAT_STATIC_ASSERT(sizeof(short) <= sizeof(int)); return 0; } ]])], [AC_MSG_RESULT(yes) AC_DEFINE([MPFR_USE_STATIC_ASSERT],1,[Build MPFR with Static Assertions]) ], [AC_MSG_RESULT(no) ], [AC_MSG_RESULT([cannot test, assume no]) ]) CPPFLAGS="$saved_CPPFLAGS" if test "$enable_lto" = "yes" ; then MPFR_LTO fi ]) m4trace:acinclude.m4:743: -1- AC_DEFUN([MPFR_CHECK_GMP], [ AC_REQUIRE([MPFR_CONFIGS])dnl AC_CACHE_CHECK([for GMP library vs header correctness], mpfr_cv_check_gmp, [ AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include #include #include ]], [[ fprintf (stderr, "GMP_NAIL_BITS = %d\n", (int) GMP_NAIL_BITS); fprintf (stderr, "GMP_NUMB_BITS = %d\n", (int) GMP_NUMB_BITS); fprintf (stderr, "mp_bits_per_limb = %d\n", (int) mp_bits_per_limb); fprintf (stderr, "sizeof(mp_limb_t) = %d\n", (int) sizeof(mp_limb_t)); if (GMP_NAIL_BITS != 0) { fprintf (stderr, "GMP_NAIL_BITS != 0\n"); return 1; } if (GMP_NUMB_BITS != mp_bits_per_limb) { fprintf (stderr, "GMP_NUMB_BITS != mp_bits_per_limb\n"); return 2; } if (GMP_NUMB_BITS != sizeof(mp_limb_t) * CHAR_BIT) { fprintf (stderr, "GMP_NUMB_BITS != sizeof(mp_limb_t) * CHAR_BIT\n"); return 3; } return 0; ]])], [mpfr_cv_check_gmp="yes"], [mpfr_cv_check_gmp="no (exit status is $?)"], [mpfr_cv_check_gmp="cannot test, assume yes"]) ]) case $mpfr_cv_check_gmp in no*) AC_MSG_ERROR([bad GMP library or header - ABI problem? See 'config.log' for details.]) esac ]) m4trace:acinclude.m4:808: -1- AC_DEFUN([MPFR_CHECK_DBL2INT_BUG], [ AC_REQUIRE([MPFR_CONFIGS])dnl AC_CACHE_CHECK([for double-to-integer conversion bug], mpfr_cv_dbl_int_bug, [ AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ double d; mp_limb_t u; int i; d = 1.0; for (i = 0; i < GMP_NUMB_BITS - 1; i++) d = d + d; u = (mp_limb_t) d; for (; i > 0; i--) { if (u & 1) break; u = u >> 1; } return (i == 0 && u == 1UL) ? 0 : 254 - i; ]])], [mpfr_cv_dbl_int_bug="no"], [mpfr_cv_dbl_int_bug="yes or failed to exec (exit status is $?)"], [mpfr_cv_dbl_int_bug="cannot test, assume not present"]) ]) case $mpfr_cv_dbl_int_bug in yes*) AC_MSG_ERROR([double-to-integer conversion is incorrect. You need to use another compiler (or lower the optimization level).]) esac ]) m4trace:acinclude.m4:844: -1- AC_DEFUN([MPFR_CHECK_MP_LIMB_T_VS_LONG], [ AC_REQUIRE([MPFR_CONFIGS]) AC_CACHE_CHECK([for long to fit in mp_limb_t], mpfr_cv_long_within_limb, [ saved_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$srcdir/src" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include "mpfr-sassert.h" ]], [[ MPFR_STAT_STATIC_ASSERT ((mp_limb_t) -1 >= (unsigned long) -1); return 0; ]])], [mpfr_cv_long_within_limb="yes"], [mpfr_cv_long_within_limb="no"], [mpfr_cv_long_within_limb="cannot test, assume not present"]) ]) case $mpfr_cv_long_within_limb in yes*) AC_DEFINE([MPFR_LONG_WITHIN_LIMB],1,[long can be stored in mp_limb_t]) esac CPPFLAGS="$saved_CPPFLAGS" ]) m4trace:acinclude.m4:869: -1- AC_DEFUN([MPFR_PARSE_DIRECTORY], [ dnl Check if argument is a directory if test -d $1 ; then dnl Get the absolute path of the directory in case of relative directory dnl with the realpath command. If the output is empty, the cause may be dnl that this command has not been found, and we do an alternate test, dnl the same as what autoconf does for the generated configure script to dnl determine whether a pathname is absolute or relative. local_tmp=`realpath $1 2>/dev/null` if test "$local_tmp" != "" ; then if test -d "$local_tmp" ; then $2="$local_tmp" else $2=$1 fi else dnl The quadrigraphs @<:@, @:>@ and @:}@ produce [, ] and ) dnl respectively (see Autoconf manual). We cannot use quoting here dnl as the result depends on the context in which this macro is dnl invoked! To detect that, one needs to look at every instance dnl of the macro expansion in the generated configure script. case $1 in @<:@\\/@:>@* | ?:@<:@\\/@:>@* @:}@ $2=$1 ;; *@:}@ $2="$PWD"/$1 ;; esac fi dnl Check for space in the directory if test `echo $1|cut -d' ' -f1` != $1 ; then AC_MSG_ERROR($1 directory shall not contain any space.) fi else AC_MSG_ERROR($1 shall be a valid directory) fi ]) m4trace:acinclude.m4:935: -1- AC_DEFUN([MPFR_C_LONG_DOUBLE_FORMAT], [AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_PROG_AWK]) AC_REQUIRE([AC_OBJEXT]) AC_CHECK_TYPES([long double]) AC_CACHE_CHECK([format of `long double' floating point], mpfr_cv_c_long_double_format, [mpfr_cv_c_long_double_format=unknown if test "$ac_cv_type_long_double" != yes; then mpfr_cv_c_long_double_format="not available" else cat >conftest.c <<\EOF [ /* "before" is 16 bytes to ensure there's no padding between it and "x". We're not expecting any "long double" bigger than 16 bytes or with alignment requirements stricter than 16 bytes. */ typedef struct { char before[16]; long double x; char after[8]; } foo_t; foo_t foo = { { '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\001', '\043', '\105', '\147', '\211', '\253', '\315', '\357' }, -123456789.0, { '\376', '\334', '\272', '\230', '\166', '\124', '\062', '\020' } }; ] EOF mpfr_compile="$CC $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD 2>&1" if AC_TRY_EVAL(mpfr_compile); then cat >conftest.awk <<\EOF [ BEGIN { found = 0 } # got[] holds a sliding window of bytes read the input. got[0] is the most # recent byte read, and got[31] the oldest byte read, so when looking to # match some data the indices are "reversed". # { for (f = 2; f <= NF; f++) { # new byte, shift others up for (i = 31; i >= 0; i--) got[i+1] = got[i]; got[0] = $f; # end sequence if (got[7] != "376") continue if (got[6] != "334") continue if (got[5] != "272") continue if (got[4] != "230") continue if (got[3] != "166") continue if (got[2] != "124") continue if (got[1] != "062") continue if (got[0] != "020") continue # start sequence, with 8-byte body if (got[23] == "001" && \ got[22] == "043" && \ got[21] == "105" && \ got[20] == "147" && \ got[19] == "211" && \ got[18] == "253" && \ got[17] == "315" && \ got[16] == "357") { saw = " (" got[15] \ " " got[14] \ " " got[13] \ " " got[12] \ " " got[11] \ " " got[10] \ " " got[9] \ " " got[8] ")" if (got[15] == "301" && \ got[14] == "235" && \ got[13] == "157" && \ got[12] == "064" && \ got[11] == "124" && \ got[10] == "000" && \ got[9] == "000" && \ got[8] == "000") { print "IEEE double, big endian" found = 1 exit } if (got[15] == "000" && \ got[14] == "000" && \ got[13] == "000" && \ got[12] == "124" && \ got[11] == "064" && \ got[10] == "157" && \ got[9] == "235" && \ got[8] == "301") { print "IEEE double, little endian" found = 1 exit } } # start sequence, with 12-byte body if (got[27] == "001" && \ got[26] == "043" && \ got[25] == "105" && \ got[24] == "147" && \ got[23] == "211" && \ got[22] == "253" && \ got[21] == "315" && \ got[20] == "357") { saw = " (" got[19] \ " " got[18] \ " " got[17] \ " " got[16] \ " " got[15] \ " " got[14] \ " " got[13] \ " " got[12] \ " " got[11] \ " " got[10] \ " " got[9] \ " " got[8] ")" if (got[19] == "000" && \ got[18] == "000" && \ got[17] == "000" && \ got[16] == "000" && \ got[15] == "240" && \ got[14] == "242" && \ got[13] == "171" && \ got[12] == "353" && \ got[11] == "031" && \ got[10] == "300") { print "IEEE extended, little endian" found = 1 exit } if (got[19] == "300" && \ got[18] == "031" && \ got[17] == "000" && \ got[16] == "000" && \ got[15] == "353" && \ got[14] == "171" && \ got[13] == "242" && \ got[12] == "240" && \ got[11] == "000" && \ got[10] == "000" && \ got[09] == "000" && \ got[08] == "000") { # format found on m68k print "IEEE extended, big endian" found = 1 exit } } # start sequence, with 16-byte body if (got[31] == "001" && \ got[30] == "043" && \ got[29] == "105" && \ got[28] == "147" && \ got[27] == "211" && \ got[26] == "253" && \ got[25] == "315" && \ got[24] == "357") { saw = " (" got[23] \ " " got[22] \ " " got[21] \ " " got[20] \ " " got[19] \ " " got[18] \ " " got[17] \ " " got[16] \ " " got[15] \ " " got[14] \ " " got[13] \ " " got[12] \ " " got[11] \ " " got[10] \ " " got[9] \ " " got[8] ")" if (got[23] == "000" && \ got[22] == "000" && \ got[21] == "000" && \ got[20] == "000" && \ got[19] == "240" && \ got[18] == "242" && \ got[17] == "171" && \ got[16] == "353" && \ got[15] == "031" && \ got[14] == "300") { print "IEEE extended, little endian" found = 1 exit } if (got[23] == "300" && \ got[22] == "031" && \ got[21] == "326" && \ got[20] == "363" && \ got[19] == "105" && \ got[18] == "100" && \ got[17] == "000" && \ got[16] == "000" && \ got[15] == "000" && \ got[14] == "000" && \ got[13] == "000" && \ got[12] == "000" && \ got[11] == "000" && \ got[10] == "000" && \ got[9] == "000" && \ got[8] == "000") { # format used on HP 9000/785 under HP-UX print "IEEE quad, big endian" found = 1 exit } if (got[23] == "000" && \ got[22] == "000" && \ got[21] == "000" && \ got[20] == "000" && \ got[19] == "000" && \ got[18] == "000" && \ got[17] == "000" && \ got[16] == "000" && \ got[15] == "000" && \ got[14] == "000" && \ got[13] == "100" && \ got[12] == "105" && \ got[11] == "363" && \ got[10] == "326" && \ got[9] == "031" && \ got[8] == "300") { print "IEEE quad, little endian" found = 1 exit } if (got[23] == "301" && \ got[22] == "235" && \ got[21] == "157" && \ got[20] == "064" && \ got[19] == "124" && \ got[18] == "000" && \ got[17] == "000" && \ got[16] == "000" && \ got[15] == "000" && \ got[14] == "000" && \ got[13] == "000" && \ got[12] == "000" && \ got[11] == "000" && \ got[10] == "000" && \ got[9] == "000" && \ got[8] == "000") { # format used on 32-bit PowerPC (Mac OS X and Debian GNU/Linux) print "possibly double-double, big endian" found = 1 exit } if (got[23] == "000" && \ got[22] == "000" && \ got[21] == "000" && \ got[20] == "124" && \ got[19] == "064" && \ got[18] == "157" && \ got[17] == "235" && \ got[16] == "301" && \ got[15] == "000" && \ got[14] == "000" && \ got[13] == "000" && \ got[12] == "000" && \ got[11] == "000" && \ got[10] == "000" && \ got[9] == "000" && \ got[8] == "000") { # format used on ppc64le print "possibly double-double, little endian" found = 1 exit } } } } END { if (! found) print "unknown", saw } ] EOF mpfr_cv_c_long_double_format=`od -b conftest.$OBJEXT | $AWK -f conftest.awk` case $mpfr_cv_c_long_double_format in unknown*) echo "cannot match anything, conftest.$OBJEXT contains" >&AS_MESSAGE_LOG_FD od -b conftest.$OBJEXT >&AS_MESSAGE_LOG_FD ;; esac else AC_MSG_WARN([oops, cannot compile test program]) fi fi rm -f conftest* ]) AH_VERBATIM([HAVE_LDOUBLE], [/* Define one of the following to 1 for the format of a `long double'. If your format is not among these choices, or you don't know what it is, then leave all undefined. IEEE_EXT is the 10-byte IEEE extended precision format. IEEE_QUAD is the 16-byte IEEE quadruple precision format. LITTLE or BIG is the endianness. */ #undef HAVE_LDOUBLE_IEEE_EXT_LITTLE #undef HAVE_LDOUBLE_IEEE_QUAD_BIG]) case $mpfr_cv_c_long_double_format in "IEEE double, big endian") AC_DEFINE(HAVE_LDOUBLE_IS_DOUBLE, 1) ;; "IEEE double, little endian") AC_DEFINE(HAVE_LDOUBLE_IS_DOUBLE, 1) ;; "IEEE extended, little endian") AC_DEFINE(HAVE_LDOUBLE_IEEE_EXT_LITTLE, 1) ;; "IEEE extended, big endian") AC_DEFINE(HAVE_LDOUBLE_IEEE_EXT_BIG, 1) ;; "IEEE quad, big endian") AC_DEFINE(HAVE_LDOUBLE_IEEE_QUAD_BIG, 1) ;; "IEEE quad, little endian") AC_DEFINE(HAVE_LDOUBLE_IEEE_QUAD_LITTLE, 1) ;; "possibly double-double, big endian") AC_MSG_WARN([This format is known on GCC/PowerPC platforms,]) AC_MSG_WARN([but due to GCC PR26374, we can't test further.]) AC_MSG_WARN([You can safely ignore this warning, though.]) AC_DEFINE(HAVE_LDOUBLE_MAYBE_DOUBLE_DOUBLE, 1) ;; "possibly double-double, little endian") AC_MSG_WARN([This format is known on GCC/PowerPC platforms,]) AC_MSG_WARN([but due to GCC PR26374, we can't test further.]) AC_MSG_WARN([You can safely ignore this warning, though.]) AC_DEFINE(HAVE_LDOUBLE_MAYBE_DOUBLE_DOUBLE, 1) ;; unknown* | "not available") ;; *) AC_MSG_WARN([unrecognized long double FP format: $mpfr_cv_c_long_double_format]) ;; esac ]) m4trace:acinclude.m4:1312: -1- AC_DEFUN([MPFR_CHECK_LIBM], [AC_REQUIRE([AC_CANONICAL_HOST]) AC_SUBST(MPFR_LIBM,'') case $host in *-*-beos* | *-*-cygwin* | *-*-pw32*) # According to libtool AC CHECK LIBM, these systems don't have libm ;; *-*-solaris*) # On Solaris the math functions new in C99 are in -lm9x. # FIXME: Do we need -lm9x as well as -lm, or just instead of? AC_CHECK_LIB(m9x, main, MPFR_LIBM="-lm9x") AC_CHECK_LIB(m, main, MPFR_LIBM="$MPFR_LIBM -lm") ;; *-ncr-sysv4.3*) # FIXME: What does -lmw mean? Libtool AC CHECK LIBM does it this way. 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[AC_MSG_RESULT(yes) AC_DEFINE([PRINTF_GROUPFLAG], 1, [Define if gmp_printf supports the ' group flag])], [AC_MSG_RESULT(no)], [AC_MSG_RESULT(cannot test, assume no)]) ]) m4trace:acinclude.m4:1498: -1- AC_DEFUN([MPFR_LTO], [ dnl Check for -flto support CFLAGS="$CFLAGS -flto" AC_MSG_CHECKING([if Link Time Optimisation flag '-flto' is supported...]) AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ int main(void) { return 0; } ]])], [AC_MSG_RESULT(yes) ], [AC_MSG_RESULT(no) AC_MSG_ERROR([Link Time Optimisation flag '-flto' is not supported.]) ]) dnl Check if it works... mpfr_compile_and_link() { echo "int f(int); int f(int n) { return n; }" > conftest-f.c echo "int f(int); int main() { return f(0); }" > conftest-m.c echo "$CC $CFLAGS -c -o conftest-f.o conftest-f.c" >&2 $CC $CFLAGS -c -o conftest-f.o conftest-f.c || return 1 echo "$AR cru conftest-lib.a conftest-f.o" >&2 $AR cru conftest-lib.a conftest-f.o || return 1 echo "$RANLIB conftest-lib.a" >&2 $RANLIB conftest-lib.a || return 1 echo "$CC 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