mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2025-11-16 12:34:45 +00:00
040e70a04f
* configure.ac: Remove "BLEEDING EDGE" warning. Put docs into RTEMS_BUILD_CONFIG_SUBDIRS. * acinclude.m4: Add AC_PREREQ(2.57). Major overhaul (PR 412). * aclocal/prog-cc.m4: Add RTEMS_GCC_ISYSTEM. * aclocal/gcc-isystem.m4: New. * Makefile.am: Add aclocal/gcc-isystem.m4.
26 lines
479 B
Plaintext
26 lines
479 B
Plaintext
dnl
|
|
dnl $Id$
|
|
dnl
|
|
dnl Check whether the gcc accepts -isystem
|
|
dnl
|
|
|
|
AC_DEFUN(RTEMS_GCC_ISYSTEM,
|
|
[AC_REQUIRE([RTEMS_PROG_CC])
|
|
AC_CACHE_CHECK(whether $CC accepts -isystem,rtems_cv_gcc_isystem,
|
|
[
|
|
rtems_cv_gcc_isystem=no
|
|
if test x"$GCC" = x"yes"; then
|
|
cat << EOF > conftest.h
|
|
int conftest123();
|
|
EOF
|
|
cat << EOF > conftest.c
|
|
#include <conftest.h>
|
|
int conftest123() {}
|
|
EOF
|
|
if test -z "`${CC} -isystem./ -c conftest.c 2>&1`";then
|
|
rtems_cv_gcc_isystem=yes
|
|
fi
|
|
fi
|
|
rm -f conftest*
|
|
])])
|