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Autoconf Macro: ax_gcc_option
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<h1>
ax_gcc_option
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AX_GCC_OPTION(VARIABLE, OPTION, VALUE-IF-SUCCESSFUL,
VALUE-IF-NOT-SUCCESFUL)</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
AX_GCC_OPTION checks wheter gcc accepts the passed OPTION. If it accepts
the OPTION then then macro sets VARIABLE to VALUE-IF-SUCCESSFUL, otherwise
it sets VARIABLE to VALUE-IF-UNSUCCESSFUL.
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Francesco Salvestrini <salvestrini@users.sourceforge.net>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2005-01-22
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AX_GCC_OPTION], [
AC_REQUIRE([AC_PROG_CC])
if test "x$GCC" = "xyes"; then
AC_MSG_CHECKING([if gcc accepts $2 option])
if AC_TRY_COMMAND($CC $2) >/dev/null 2>&1; then
$1=$3
AC_MSG_RESULT([yes])
else
$1=$4
AC_MSG_RESULT([no])
fi
else
unset $1
AC_MSG_RESULT([sorry, no gcc available])
fi
])
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