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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [aclocal/] [prog-cc.m4] - Rev 281
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dnl dnl $Id: prog-cc.m4,v 1.2 2001-09-27 11:59:11 chris Exp $ dnl dnl Check for target gcc dnl dnl 98/05/20 Ralf Corsepius (corsepiu@faw.uni-ulm.de) dnl Completely reworked AC_DEFUN(RTEMS_PROG_CC, [ AC_BEFORE([$0], [AC_PROG_CPP])dnl AC_BEFORE([$0], [AC_PROG_CC])dnl AC_BEFORE([$0], [RTEMS_CANONICALIZE_TOOLS])dnl AC_REQUIRE([RTEMS_TOOL_PREFIX])dnl AC_REQUIRE([RTEMS_ENABLE_LIBCDIR])dnl dnl Only accept gcc and cc dnl NOTE: This might be too restrictive for native compilation AC_PATH_PROGS(CC_FOR_TARGET, "$program_prefix"gcc "$program_prefix"cc ) test -z "$CC_FOR_TARGET" \ && AC_MSG_ERROR([no acceptable cc found in \$PATH]) dnl backup rtems_save_CC=$CC rtems_save_CFLAGS=$CFLAGS dnl temporarily set CC CC=$CC_FOR_TARGET AC_PROG_CC_WORKS AC_PROG_CC_GNU if test $ac_cv_prog_gcc = yes; then GCC=yes dnl Check whether -g works, even if CFLAGS is set, in case the package dnl plays around with CFLAGS (such as to build both debugging and dnl normal versions of a library), tasteless as that idea is. ac_test_CFLAGS="${CFLAGS+set}" ac_save_CFLAGS="$CFLAGS" CFLAGS= AC_PROG_CC_G if test "$ac_test_CFLAGS" = set; then CFLAGS="$ac_save_CFLAGS" elif test $ac_cv_prog_cc_g = yes; then CFLAGS="-g -O2" else CFLAGS="-O2" fi else GCC= test "${CFLAGS+set}" = set || CFLAGS="-g" fi rtems_cv_prog_gcc=$ac_cv_prog_gcc rtems_cv_prog_cc_g=$ac_cv_prog_cc_g rtems_cv_prog_cc_works=$ac_cv_prog_cc_works rtems_cv_prog_cc_cross=$ac_cv_prog_cc_cross dnl restore initial values CC=$rtems_save_CC CFLAGS=$rtems_save_CFLAGS unset ac_cv_prog_gcc unset ac_cv_prog_cc_g unset ac_cv_prog_cc_works unset ac_cv_prog_cc_cross ]) AC_DEFUN(RTEMS_PROG_CC_FOR_TARGET, [ dnl check target cc RTEMS_PROG_CC dnl check if the compiler supports --specs RTEMS_GCC_SPECS dnl check if the target compiler may use --pipe RTEMS_GCC_PIPE dnl check if the compiler supports --specs if gcc28 is requested if test "$RTEMS_USE_GCC272" != "yes" ; then if test "$rtems_cv_gcc_specs" = "no"; then AC_MSG_WARN([*** disabling --enable-gcc28]) RTEMS_USE_GCC272=yes fi fi test "$rtems_cv_gcc_pipe" = "yes" && CC_FOR_TARGET="$CC_FOR_TARGET --pipe" dnl FIXME: HACK for egcs/cygwin mixing '\\' and '/' in gcc -print-* case $host_os in *cygwin*) GCCSED="| sed 's%\\\\%/%g'" ;; *) ;; esac AC_SUBST(GCCSED) ])
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