@node ax_compiler_flags_cxxflags
@unnumberedsec ax_compiler_flags_cxxflags

@majorheading Synopsis

@smallexample
AX_COMPILER_FLAGS_CXXFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS], [EXTRA-YES-FLAGS])
@end smallexample

@majorheading Description

Add warning flags for the C++ compiler to VARIABLE, which defaults to
WARN_CXXFLAGS.  VARIABLE is AC_SUBST-ed by this macro, but must be
manually added to the CXXFLAGS variable for each target in the code
base.

This macro depends on the environment set up by AX_COMPILER_FLAGS.
Specifically, it uses the value of $ax_enable_compile_warnings to decide
which flags to enable.

@majorheading Source Code

Download the
@uref{http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=m4/ax_compiler_flags_cxxflags.m4,latest
version of @file{ax_compiler_flags_cxxflags.m4}} or browse
@uref{http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=history;f=m4/ax_compiler_flags_cxxflags.m4,the
macro's revision history}.

@majorheading License

@w{Copyright @copyright{} 2015 David King @email{amigadave@@amigadave.com}}

Copying and distribution of this file, with or without modification, are
permitted in any medium without royalty provided the copyright notice
and this notice are preserved.  This file is offered as-is, without any
warranty.