2002-01-08 02:12:32 +08:00
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dnl Process this file with autoconf to produce a configure script.
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AC_PREREQ(2.5)dnl
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AC_INIT(redboot-crt0.S)
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2004-06-18 03:33:27 +08:00
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dnl Support --disable-newlib-supplied-syscalls
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AC_ARG_ENABLE(newlib-supplied-syscalls,
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[ --disable-newlib-supplied-syscalls disable newlib from supplying syscalls],
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[case "${enableval}" in
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yes) newlib_may_supply_syscalls=yes ;;
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no) newlib_may_supply_syscalls=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-supplied-syscalls option) ;;
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esac], [newlib_may_supply_syscalls=yes])dnl
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if test "x$newlib_may_supply_syscalls" = "xyes"; then
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BUILD_CRT0_TRUE=
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BUILD_CRT0_FALSE='#'
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else
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BUILD_CRT0_TRUE='#'
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BUILD_CRT0_FALSE=
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fi
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2002-01-08 02:12:32 +08:00
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if test "$srcdir" = "." ; then
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if test "${with_target_subdir}" != "." ; then
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libgloss_topdir="${srcdir}/${with_multisrctop}../../.."
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else
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libgloss_topdir="${srcdir}/${with_multisrctop}../.."
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fi
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else
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libgloss_topdir="${srcdir}/../.."
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fi
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AC_CONFIG_AUX_DIR($libgloss_topdir)
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AC_CANONICAL_SYSTEM
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AC_ARG_PROGRAM
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AC_PROG_INSTALL
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# FIXME: We temporarily define our own version of AC_PROG_CC. This is
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# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
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# are probably using a cross compiler, which will not be able to fully
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# link an executable. This should really be fixed in autoconf
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# itself.
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AC_DEFUN(LIB_AC_PROG_CC,
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[AC_BEFORE([$0], [AC_PROG_CPP])dnl
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AC_CHECK_PROG(CC, gcc, gcc)
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if test -z "$CC"; then
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AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
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test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
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fi
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AC_PROG_CC_GNU
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if test $ac_cv_prog_gcc = yes; then
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GCC=yes
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dnl Check whether -g works, even if CFLAGS is set, in case the package
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dnl plays around with CFLAGS (such as to build both debugging and
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dnl normal versions of a library), tasteless as that idea is.
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ac_test_CFLAGS="${CFLAGS+set}"
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS=
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AC_PROG_CC_G
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if test "$ac_test_CFLAGS" = set; then
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CFLAGS="$ac_save_CFLAGS"
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elif test $ac_cv_prog_cc_g = yes; then
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CFLAGS="-g -O2"
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else
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CFLAGS="-O2"
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fi
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else
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GCC=
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test "${CFLAGS+set}" = set || CFLAGS="-g"
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fi
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])
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LIB_AC_PROG_CC
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AS=${AS-as}
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AC_SUBST(AS)
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AR=${AR-ar}
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AC_SUBST(AR)
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LD=${LD-ld}
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AC_SUBST(LD)
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AC_PROG_RANLIB
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case "${target}" in
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2004-10-01 19:37:17 +08:00
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*-*-elf | *-*-eabi)
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2002-01-08 02:12:32 +08:00
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objtype=elf-
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;;
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*-*-coff)
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objtype=coff-
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;;
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esac
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AC_SUBST(objtype)
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host_makefile_frag=${srcdir}/../config/default.mh
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dnl We have to assign the same value to other variables because autoconf
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dnl doesn't provide a mechanism to substitute a replacement keyword with
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dnl arbitrary data or pathnames.
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dnl
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host_makefile_frag_path=$host_makefile_frag
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AC_SUBST(host_makefile_frag_path)
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AC_SUBST_FILE(host_makefile_frag)
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AC_OUTPUT(Makefile,
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. ${libgloss_topdir}/config-ml.in,
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srcdir=${srcdir}
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target=${target}
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ac_configure_args="${ac_configure_args} --enable-multilib"
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CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
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libgloss_topdir=${libgloss_topdir}
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)
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