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Autoconf Macro: ac_compile_warnings
</title>
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<hr>
<h1>
ac_compile_warnings
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AC_COMPILE_WARNINGS</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
Set the maximum warning verbosity according to C and C++ compiler used.
Currently supports g++ and gcc.
</p>
<p>
The compiler options are always added CFLAGS and CXXFLAGS even if these are
overidden at configure time. Removing the maximum warning flags can be
removed with --without-maximum-compile-warnings. For example:
</p>
<pre>
./configure --without-maximum-compile-warnings CFLAGS= CXXFLAGS=
</pre>
</div>
<h2>
Author
</h2>
<p class="indent">
Loic Dachary <loic@senga.org>, William Fulton
<wsf@fultondesigns.co.uk>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2005-04-29
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AC_COMPILE_WARNINGS], [
AC_MSG_CHECKING([maximum warning verbosity option])
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_PROG_CXX])
AC_ARG_WITH([maximum-compile-warnings],
AS_HELP_STRING([--without-maximum-compile-warnings],
[Disable maximum warning verbosity]),
[ac_compile_warnings_on="$withval"],
[ac_compile_warnings_on=""])
if test x"$ac_compile_warnings_on" = xno
then
ac_compile_warnings_msg=no
else
if test -n "$CXX"
then
if test "$GXX" = "yes"
then
ac_compile_warnings_opt='-Wall -W -ansi -pedantic'
fi
CXXFLAGS="$CXXFLAGS $ac_compile_warnings_opt"
ac_compile_warnings_msg="$ac_compile_warnings_opt for C++"
fi
if test -n "$CC"
then
if test "$GCC" = "yes"
then
ac_compile_warnings_opt='-Wall -W -ansi -pedantic'
fi
CFLAGS="$CFLAGS $ac_compile_warnings_opt"
ac_compile_warnings_msg="$ac_compile_warnings_msg $ac_compile_warnings_opt for C"
fi
fi
AC_MSG_RESULT([$ac_compile_warnings_msg])
unset ac_compile_warnings_msg
unset ac_compile_warnings_opt
])
</pre>
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