# wcrtomb.m4 serial 13 dnl Copyright (C) 2008-2018 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_WCRTOMB], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) gl_MBSTATE_T_BROKEN AC_CHECK_FUNCS_ONCE([wcrtomb]) if test $ac_cv_func_wcrtomb = no; then HAVE_WCRTOMB=0 AC_CHECK_DECLS([wcrtomb],,, [[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]]) if test $ac_cv_have_decl_wcrtomb = yes; then dnl On Minix 3.1.8, the system's declares wcrtomb() although dnl it does not have the function. Avoid a collision with gnulib's dnl replacement. REPLACE_WCRTOMB=1 fi else if test $REPLACE_MBSTATE_T = 1; then REPLACE_WCRTOMB=1 else dnl On AIX 4.3, OSF/1 5.1 and Solaris <= 11.3, wcrtomb (NULL, 0, NULL) dnl sometimes returns 0 instead of 1. AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([gt_LOCALE_JA]) AC_REQUIRE([gt_LOCALE_ZH_CN]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether wcrtomb return value is correct], [gl_cv_func_wcrtomb_retval], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on AIX 4, OSF/1 and Solaris. aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_wcrtomb_retval="guessing yes" ;; # Guess yes otherwise. *) gl_cv_func_wcrtomb_retval="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { int result = 0; if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 1; } if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 2; } if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 4; } if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 8; } return result; }]])], [gl_cv_func_wcrtomb_retval=yes], [gl_cv_func_wcrtomb_retval=no], [:]) fi ]) case "$gl_cv_func_wcrtomb_retval" in *yes) ;; *) REPLACE_WCRTOMB=1 ;; esac fi fi ]) # Prerequisites of lib/wcrtomb.c. AC_DEFUN([gl_PREREQ_WCRTOMB], [ : ])