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