229 lines
7.0 KiB
Plaintext
229 lines
7.0 KiB
Plaintext
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 ${enableval} for target-optspace option) ;;
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esac], [target_optspace=])dnl
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dnl Support --enable-malloc-debugging - currently only supported for Cygwin
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AC_ARG_ENABLE(malloc-debugging,
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[ --enable-malloc-debugging indicate malloc debugging requested],
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[case "${enableval}" in
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yes) malloc_debugging=yes ;;
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no) malloc_debugging=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for malloc-debugging option) ;;
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esac], [malloc_debugging=])dnl
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dnl Support --enable-newlib-multithread
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AC_ARG_ENABLE(newlib-multithread,
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[ --enable-newlib-multithread enable support for multiple threads],
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[case "${enableval}" in
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yes) newlib_multithread=yes ;;
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no) newlib_multithread=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-multithread option) ;;
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esac], [newlib_multithread=yes])dnl
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dnl Support --enable-newlib-iconv
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AC_ARG_ENABLE(newlib-iconv,
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[ --enable-newlib-iconv enable iconv library support],
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[if test "${newlib_iconv+set}" != set; then
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case "${enableval}" in
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yes) newlib_iconv=yes ;;
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no) newlib_iconv=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-iconv option) ;;
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esac
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fi], [newlib_iconv=${newlib_iconv}])dnl
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dnl Support --enable-newlib-elix-level
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AC_ARG_ENABLE(newlib-elix-level,
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[ --enable-newlib-elix-level supply desired elix library level (1-4)],
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[case "${enableval}" in
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0) newlib_elix_level=0 ;;
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1) newlib_elix_level=1 ;;
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2) newlib_elix_level=2 ;;
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3) newlib_elix_level=3 ;;
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4) newlib_elix_level=4 ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-elix-level option) ;;
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esac], [newlib_elix_level=0])dnl
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dnl Support --disable-newlib-io-float
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AC_ARG_ENABLE(newlib-io-float,
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[ --disable-newlib-io-float disable printf/scanf family float support],
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[case "${enableval}" in
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yes) newlib_io_float=yes ;;
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no) newlib_io_float=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-io-float option) ;;
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esac], [newlib_io_float=yes])dnl
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dnl Support --disable-newlib-supplied-syscalls
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AC_ARG_ENABLE(newlib-supplied-syscalls,
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[ --disable-newlib-supplied-syscalls disable newlib from supplying syscalls],
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[case "${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 ${enableval} for newlib-supplied-syscalls option) ;;
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esac], [newlib_may_supply_syscalls=yes])dnl
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AM_CONDITIONAL(MAY_SUPPLY_SYSCALLS, test x[$]{newlib_may_supply_syscalls} = xyes)
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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}/$1"
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fi
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AC_SUBST(newlib_basedir)
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AC_CANONICAL_SYSTEM
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AM_INIT_AUTOMAKE(newlib, 1.14.0, nodefine)
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# FIXME: We temporarily define our own version of AC_PROG_CC. This is
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# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
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# are probably using a cross compiler, which will not be able to fully
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# link an executable. This should really be fixed in autoconf
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# itself.
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AC_DEFUN([LIB_AC_PROG_CC_GNU],
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[AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
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[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
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cat > conftest.c <<EOF
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#ifdef __GNUC__
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yes;
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#endif
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EOF
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if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
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ac_cv_prog_gcc=yes
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else
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ac_cv_prog_gcc=no
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fi])])
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AC_DEFUN([LIB_AM_PROG_AS],
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[# By default we simply use the C compiler to build assembly code.
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AC_REQUIRE([LIB_AC_PROG_CC])
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test "${CCAS+set}" = set || CCAS=$CC
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test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
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AC_ARG_VAR([CCAS], [assembler compiler command (defaults to CC)])
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AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
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])
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AC_DEFUN([LIB_AC_PROG_CC],
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[AC_BEFORE([$0], [AC_PROG_CPP])dnl
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AC_CHECK_PROG(CC, gcc, gcc)
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_AM_DEPENDENCIES(CC)
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if test -z "$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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LIB_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(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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# Hack to ensure that INSTALL won't be set to "../" with autoconf 2.13. */
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ac_given_INSTALL=$INSTALL
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AM_MAINTAINER_MODE
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LIB_AM_PROG_AS
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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 $(EXEEXT). Moreover, the test for EXEEXT normally
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# fails, because we are probably configuring with a cross compiler
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# which can't create executables. So we include AC_EXEEXT to keep
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# automake happy, but we don't execute it, since we don't care about
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# the result.
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if false; then
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AC_EXEEXT
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dummy_var=1
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fi
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. [$]{newlib_basedir}/configure.host
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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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LDFLAGS=${ldflags}
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AC_SUBST(LDFLAGS)
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AM_CONDITIONAL(ELIX_LEVEL_0, test x[$]{newlib_elix_level} = x0)
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AM_CONDITIONAL(ELIX_LEVEL_1, test x[$]{newlib_elix_level} = x1)
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AM_CONDITIONAL(ELIX_LEVEL_2, test x[$]{newlib_elix_level} = x2)
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AM_CONDITIONAL(ELIX_LEVEL_3, test x[$]{newlib_elix_level} = x3)
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AM_CONDITIONAL(ELIX_LEVEL_4, test x[$]{newlib_elix_level} = x4)
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AM_CONDITIONAL(USE_LIBTOOL, test x[$]{use_libtool} = xyes)
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# Hard-code OBJEXT. Normally it is set by AC_OBJEXT, but we
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# use oext, which is set in configure.host based on the target platform.
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OBJEXT=${oext}
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AC_SUBST(OBJEXT)
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AC_SUBST(oext)
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AC_SUBST(aext)
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AC_SUBST(lpfx)
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AC_SUBST(libm_machine_dir)
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AC_SUBST(machine_dir)
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AC_SUBST(sys_dir)
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])
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