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joel |
dnl This provides configure definitions used by all the newlib
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dnl configure.in files.
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dnl Basic newlib configury. This calls basic introductory stuff,
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dnl including AM_INIT_AUTOMAKE and AC_CANONICAL_HOST. It also runs
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dnl configure.host. The only argument is the relative path to the top
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dnl newlib directory.
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AC_DEFUN(NEWLIB_CONFIGURE,
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[
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dnl Default to --enable-multilib
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AC_ARG_ENABLE(multilib,
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[ --enable-multilib build many library versions (default)],
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[case "${enableval}" in
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yes) multilib=yes ;;
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no) multilib=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
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esac], [multilib=yes])dnl
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dnl Support --enable-target-optspace
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AC_ARG_ENABLE(target-optspace,
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[ --enable-target-optspace optimize for space],
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[case "${enableval}" in
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yes) target_optspace=yes ;;
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no) target_optspace=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for target-optspace option) ;;
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esac], [target_optspace=])dnl
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dnl Support --enable-newlib-mb
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AC_ARG_ENABLE(newlib-mb,
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[ --enable-newlib-mb enable multibyte support],
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[case "${enableval}" in
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yes) newlib_mb=yes ;;
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no) newlib_mb=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-mb option) ;;
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esac], [newlib_mb=no])dnl
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dnl We may get other options which we don't document:
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dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
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test -z "[$]{with_target_subdir}" && with_target_subdir=.
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if test "[$]{srcdir}" = "."; then
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if test "[$]{with_target_subdir}" != "."; then
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newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
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else
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newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
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fi
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else
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newlib_basedir="[$]{srcdir}/$1"
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fi
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AC_SUBST(newlib_basedir)
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AC_CANONICAL_HOST
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AM_INIT_AUTOMAKE(newlib, 1.8.2)
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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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# AC_CHECK_TOOL does AC_REQUIRE (AC_CANONICAL_BUILD). If we don't
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# run it explicitly here, it will be run implicitly before
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# NEWLIB_CONFIGURE, which doesn't work because that means that it will
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# be run before AC_CANONICAL_HOST.
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AC_CANONICAL_BUILD
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AC_CHECK_TOOL(AS, as)
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AC_CHECK_TOOL(AR, ar)
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AC_CHECK_TOOL(RANLIB, ranlib, :)
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AC_PROG_INSTALL
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AM_MAINTAINER_MODE
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# We need AC_EXEEXT to keep automake happy in cygnus mode. However,
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# at least currently, we never actually build a program, so we never
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# need to use $(EXEEXT). Moreover, the test for EXEEXT normally
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# fails, because we are probably configuring with a cross compiler
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# which can't create executables. So we include AC_EXEEXT to keep
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# automake happy, but we don't execute it, since we don't care about
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# the result.
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if false; then
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AC_EXEEXT
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fi
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. [$]{newlib_basedir}/configure.host
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case [$]{newlib_basedir} in
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/* | [A-Za-z]:[/\\]*) newlib_flagbasedir=[$]{newlib_basedir} ;;
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*) newlib_flagbasedir='[$](top_builddir)/'[$]{newlib_basedir} ;;
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esac
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newlib_cflags="[$]{newlib_cflags} -I"'[$](top_builddir)'"/$1/targ-include -I[$]{newlib_flagbasedir}/libc/include"
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case "${host}" in
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*-*-cygwin*)
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newlib_cflags="[$]{newlib_cflags} -I[$]{newlib_flagbasedir}/../winsup/include"
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;;
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esac
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newlib_cflags="[$]{newlib_cflags} -fno-builtin"
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NEWLIB_CFLAGS=${newlib_cflags}
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AC_SUBST(NEWLIB_CFLAGS)
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AC_SUBST(machine_dir)
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AC_SUBST(sys_dir)
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])
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