470 lines
15 KiB
Plaintext
470 lines
15 KiB
Plaintext
dnl This is the newlib configure.in file.
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dnl Process this file with autoconf to produce a configure script.
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AC_PREREQ(2.59)
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AC_INIT([newlib],[NEWLIB_VERSION])
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AC_CONFIG_SRCDIR([libc])
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AC_CONFIG_HEADER(newlib.h:newlib.hin)
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dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake.
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AC_CONFIG_AUX_DIR(..)
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dnl Support --enable-newlib-io-pos-args
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dnl This option is actually read in libc/configure.in. It is repeated
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dnl here so that it shows up in the help text.
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AC_ARG_ENABLE(newlib-io-pos-args,
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[ --enable-newlib-io-pos-args enable printf-family positional arg support],
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[case "${enableval}" in
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yes) newlib_io_pos_args=yes ;;
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no) newlib_io_pos_args=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-io-pos-args option) ;;
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esac], [newlib_io_pos_args=])dnl
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dnl Support --enable-newlib-io-c99-formats
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AC_ARG_ENABLE(newlib-io-c99-formats,
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[ --enable-newlib-io-c99-formats enable C99 support in IO functions like printf/scanf],
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[case "${enableval}" in
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yes) newlib_io_c99_formats=yes;;
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no) newlib_io_c99_formats=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-io-c99-formats option) ;;
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esac], [newlib_io_c99_formats=])dnl
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dnl Support --enable-newlib-io-long-long
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AC_ARG_ENABLE(newlib-io-long-long,
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[ --enable-newlib-io-long-long enable long long type support in IO functions like printf/scanf],
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[case "${enableval}" in
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yes) newlib_io_long_long=yes;;
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no) newlib_io_long_long=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-long option) ;;
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esac], [newlib_io_long_long=])dnl
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dnl Support --enable-newlib-io-long-double
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AC_ARG_ENABLE(newlib-io-long-double,
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[ --enable-newlib-io-long-double enable long double type support in IO functions printf/scanf],
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[case "${enableval}" in
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yes) newlib_io_long_double=yes;;
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no) newlib_io_long_double=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-double option) ;;
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esac], [newlib_io_long_double=])dnl
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dnl If multibyte support is enabled, iconv should be enabled too
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dnl Support --enable-newlib-mb
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AC_ARG_ENABLE(newlib-mb,
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[ --enable-newlib-mb enable multibyte support],
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[case "${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 ${enableval} for newlib-mb option) ;;
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esac], [newlib_mb=])dnl
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dnl Support --enable-newlib-iconv-encodings
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AC_ARG_ENABLE(newlib-iconv-encodings,
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[ --enable-newlib-iconv-encodings enable specific comma-separated list of bidirectional iconv encodings to be built-in],
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[if test x${enableval} = x; then
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AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-encodings option - use comma-separated encodings list)
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fi
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iconv_encodings=${enableval}
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], [iconv_encodings=])dnl
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dnl Support --enable-newlib-iconv-from-encodings
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AC_ARG_ENABLE(newlib-iconv-from-encodings,
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[ --enable-newlib-iconv-from-encodings enable specific comma-separated list of \"from\" iconv encodings to be built-in],
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[if test x${enableval} = x; then
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AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-from-encodings option - use comma-separated encodings list)
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fi
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iconv_from_encodings=${enableval}
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], [iconv_from_encodings=])dnl
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dnl Support --enable-newlib-iconv-to-encodings
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AC_ARG_ENABLE(newlib-iconv-to-encodings,
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[ --enable-newlib-iconv-to-encodings enable specific comma-separated list of \"to\" iconv encodings to be built-in],
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[if test x${enableval} = x; then
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AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-to-encodings option - use comma-separated encodings list)
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fi
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iconv_to_encodings=${enableval}
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], [iconv_to_encodings=])dnl
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dnl Support --enable-newlib-iconv-external-ccs
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AC_ARG_ENABLE(newlib-iconv-external-ccs,
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[ --enable-newlib-iconv-external-ccs enable capabilities to load external CCS files for iconv],
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[if test "${newlib_iconv_external_ccs+set}" != set; then
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case "${enableval}" in
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yes) newlib_iconv_external_ccs=yes ;;
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no) newlib_iconv_external_ccs=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-external-ccs option) ;;
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esac
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fi], [newlib_iconv_external_ccs=${newlib_iconv_external_ccs}])dnl
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dnl Support --disable-newlib-atexit-dynamic-alloc
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AC_ARG_ENABLE(newlib-atexit-dynamic-alloc,
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[ --disable-newlib-atexit-alloc disable dynamic allocation of atexit entries],
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[if test "${newlib_atexit_dynamic_alloc+set}" != set; then
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case "${enableval}" in
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yes) newlib_atexit_dynamic_alloc=yes ;;
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no) newlib_atexit_dynamic_alloc=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-atexit-dynamic-alloc option) ;;
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esac
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fi], [newlib_atexit_dynamic_alloc=${newlib_atexit_dynamic_alloc}])dnl
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dnl Support --enable-newlib-reent-small
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AC_ARG_ENABLE(newlib-reent-small,
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[ --enable-newlib-reent-small enable small reentrant struct support],
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[case "${enableval}" in
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yes) newlib_reent_small=yes;;
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no) newlib_reent_small=no ;;
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*) AC_MSG_ERROR(bad value ${enableval} for newlib-reent-small option) ;;
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esac], [newlib_reent_small=])dnl
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NEWLIB_CONFIGURE(.)
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dnl We have to enable libtool after NEWLIB_CONFIGURE because if we try and
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dnl add it into NEWLIB_CONFIGURE, executable tests are made before the first
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dnl line of the macro which fail because appropriate LDFLAGS are not set.
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_LT_DECL_SED
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AC_PROG_AWK
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if test "${use_libtool}" = "yes"; then
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AC_LIBTOOL_WIN32_DLL
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AM_PROG_LIBTOOL
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fi
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AC_ARG_ENABLE(newlib_hw_fp,
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[ --enable-newlib-hw-fp Turn on hardware floating point math],
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[case "${enableval}" in
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yes) newlib_hw_fp=true ;;
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no) newlib_hw_fp=false ;;
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*) AC_MSG_ERROR(bad value ${enableval} for --enable-newlib-hw-fp) ;;
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esac],[newlib_hw_fp=false])
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AM_CONDITIONAL(NEWLIB_HW_FP, test x$newlib_hw_fp = xtrue)
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# These get added in the top-level configure.in, except in the case where
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# newlib is being built natively.
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LIBC_INCLUDE_GREP=`echo ${CC} | grep \/libc\/include`
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abs_newlib_basedir=`cd ${newlib_basedir} && pwd`
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if test -z "${LIBC_INCLUDE_GREP}"; then
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CC_FOR_NEWLIB="${CC} -I$PWD/targ-include -I${abs_newlib_basedir}/libc/include"
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else
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CC_FOR_NEWLIB="${CC}"
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fi
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AC_SUBST(CC_FOR_NEWLIB)
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AC_CONFIG_SUBDIRS(libc)
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AC_CONFIG_SUBDIRS(libm)
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if test -z "${with_multisubdir}"; then
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AC_CONFIG_SUBDIRS(doc)
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have_doc=yes
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else
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have_doc=
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fi
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AM_CONDITIONAL(HAVE_DOC, test x$have_doc = xyes)
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EXTRA_DIRS=
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case $host in
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i[[34567]]86-pc-linux-*)
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AC_CONFIG_SUBDIRS(iconvdata)
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EXTRA_DIRS=iconvdata
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;;
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esac
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AC_SUBST(EXTRA_DIRS)
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CRT0=
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CRT0_DIR=
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if test "x${have_crt0}" = "xyes"; then
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CRT0=crt0.o
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CRT0_DIR=libc/
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fi
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AC_SUBST(CRT0)
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AC_SUBST(CRT0_DIR)
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CRT1=${crt1}
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CRT1_DIR=
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if test -n "${crt1_dir}"; then
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CRT1_DIR=${crt1_dir}/
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fi
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AC_SUBST(CRT1)
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AC_SUBST(CRT1_DIR)
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if test -n "${libm_machine_dir}"; then
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LIBM_MACHINE_OBJECTLIST=libm/machine/${libm_machine_dir}/objectlist.awk.in
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fi
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AC_SUBST(LIBM_MACHINE_OBJECTLIST)
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if test -n "${machine_dir}"; then
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MACHINE_OBJECTLIST=libc/machine/${machine_dir}/objectlist.awk.in
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fi
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AC_SUBST(MACHINE_OBJECTLIST)
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if test -n "${sys_dir}"; then
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SYS_OBJECTLIST=libc/sys/${sys_dir}/objectlist.awk.in
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fi
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AC_SUBST(SYS_OBJECTLIST)
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if test "${have_sys_mach_dir}" = "yes"; then
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SYS_MACH_OBJECTLIST=libc/sys/${sys_dir}/machine/${machine_dir}/objectlist.awk.in
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fi
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AC_SUBST(SYS_MACH_OBJECTLIST)
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if test -n "${posix_dir}"; then
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POSIX_OBJECTLIST=libc/${posix_dir}/objectlist.awk.in
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fi
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AC_SUBST(POSIX_OBJECTLIST)
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if test -n "${signal_dir}"; then
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SIGNAL_OBJECTLIST=libc/${signal_dir}/objectlist.awk.in
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fi
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AC_SUBST(SIGNAL_OBJECTLIST)
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if test -n "${syscall_dir}"; then
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SYSCALL_OBJECTLIST=libc/${syscall_dir}/objectlist.awk.in
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fi
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AC_SUBST(SYSCALL_OBJECTLIST)
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if test -n "${unix_dir}"; then
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UNIX_OBJECTLIST=libc/${unix_dir}/objectlist.awk.in
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fi
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AC_SUBST(UNIX_OBJECTLIST)
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if test -n "${stdio64_dir}"; then
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STDIO64_OBJECTLIST=libc/${stdio64_dir}/objectlist.awk.in
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fi
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AC_SUBST(STDIO64_OBJECTLIST)
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# Put a plausible default for CC_FOR_BUILD in Makefile.
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if test -z "$CC_FOR_BUILD"; then
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CC_FOR_BUILD=gcc
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fi
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AC_SUBST(CC_FOR_BUILD)
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if test "${newlib_elix_level}" -gt "0"; then
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AC_DEFINE_UNQUOTED(_ELIX_LEVEL,${newlib_elix_level})
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fi
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if test "${newlib_io_c99_formats}" = "yes"; then
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AC_DEFINE_UNQUOTED(_WANT_IO_C99_FORMATS)
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fi
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if test "${newlib_io_long_long}" = "yes"; then
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AC_DEFINE_UNQUOTED(_WANT_IO_LONG_LONG)
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fi
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if test "${newlib_io_long_double}" = "yes"; then
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AC_DEFINE_UNQUOTED(_WANT_IO_LONG_DOUBLE)
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fi
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if test "${newlib_io_pos_args}" = "yes"; then
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AC_DEFINE_UNQUOTED(_WANT_IO_POS_ARGS)
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fi
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if test "${newlib_reent_small}" = "yes"; then
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AC_DEFINE_UNQUOTED(_WANT_REENT_SMALL)
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fi
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if test "${newlib_mb}" = "yes"; then
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AC_DEFINE_UNQUOTED(_MB_CAPABLE)
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AC_DEFINE_UNQUOTED(_MB_LEN_MAX,8)
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else
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AC_DEFINE_UNQUOTED(_MB_LEN_MAX,1)
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fi
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if test "${newlib_iconv_external_ccs}" = "yes"; then
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AC_DEFINE_UNQUOTED(_ICONV_ENABLE_EXTERNAL_CCS)
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fi
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AC_DEFINE_UNQUOTED(_NEWLIB_VERSION,"NEWLIB_VERSION")
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if test "${multilib}" = "yes"; then
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multilib_arg="--enable-multilib"
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else
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multilib_arg=
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fi
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if test "${newlib_iconv}" = "yes"; then
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AC_DEFINE_UNQUOTED(_ICONV_ENABLED,1)
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fi
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if test "x${newlib_iconv_external_ccs}" = "xyes"; then
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if test "x${newlib_iconv}" = "x"; then
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AC_MSG_ERROR(--enable-newlib-iconv-external-ccs option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.)
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fi
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AC_DEFINE_UNQUOTED(_ICONV_ENABLE_EXTERNAL_CCS,1)
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fi
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if test "${newlib_atexit_dynamic_alloc}" = "yes"; then
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AC_DEFINE_UNQUOTED(_ATEXIT_DYNAMIC_ALLOC)
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fi
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dnl
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dnl Parse --enable-newlib-iconv-encodings option argument
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dnl
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if test "x${iconv_encodings}" != "x" \
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|| test "x${iconv_to_encodings}" != "x" \
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|| test "x${iconv_from_encodings}" != "x"; then
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if test "x${newlib_iconv}" = "x"; then
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AC_MSG_ERROR([--enable-newlib-iconv-encodings, --enable-newlib-iconv-from-encodings and --enable-newlib-iconv-to-encodings option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.])
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fi
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dnl Normalize encodings names and delete commas
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iconv_encodings=`echo "${iconv_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
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iconv_to_encodings=`echo "${iconv_to_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
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iconv_from_encodings=`echo "${iconv_from_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
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dnl Get the list of available encodings excluding comments
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dnl Join line with previous if the first character is whitespace
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available_encodings=`cat "${srcdir}/libc/iconv/encoding.aliases" | sed -e '/^#.*/d'`
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dnl Check if required encodings are supported
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dnl Convert aliases to names
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dnl iconv_encodings
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iconv_encodings1="${iconv_encodings}"
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iconv_encodings=""
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for encoding in ${iconv_encodings1}; do
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result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
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if test $? != "0"; then
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AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)
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fi
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encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`
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iconv_encodings="${iconv_encodings} ${encoding1}"
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done
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dnl Enable appropriate option in newlib.h
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for encoding in ${iconv_encodings}; do
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opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
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AC_DEFINE_UNQUOTED($opt,1)
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opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
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AC_DEFINE_UNQUOTED($opt,1)
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done
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dnl iconv_to_encodings
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iconv_encodings1="${iconv_to_encodings}"
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iconv_to_encodings=""
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for encoding in ${iconv_encodings1}; do
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result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
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if test $? != "0"; then
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AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)
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fi
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encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`
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iconv_to_encodings="${iconv_to_encodings} ${encoding1}"
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done
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dnl Enable appropriate option in newlib.h
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for encoding in ${iconv_to_encodings}; do
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opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
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AC_DEFINE_UNQUOTED($opt,1)
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done
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dnl iconv_from_encodings
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iconv_encodings1="${iconv_from_encodings}"
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iconv_from_encodings=""
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for encoding in ${iconv_encodings1}; do
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result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
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if test $? != "0"; then
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AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)
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fi
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encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`
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iconv_from_encodings="${iconv_from_encodings} ${encoding1}"
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done
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dnl Enable appropriate option in newlib.h
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for encoding in ${iconv_from_encodings}; do
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opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
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AC_DEFINE_UNQUOTED($opt,1)
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done
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fi;
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AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
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libc_cv_initfinit_array, [dnl
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cat > conftest.c <<EOF
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int _start (void) { return 0; }
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int __start (void) { return 0; }
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int foo (void) { return 1; }
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int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
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EOF
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if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest conftest.c
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1>&AS_MESSAGE_LOG_FD])
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then
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if ${READELF} -S conftest | grep -e INIT_ARRAY > /dev/null; then
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libc_cv_initfinit_array=yes
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else
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libc_cv_initfinit_array=no
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fi
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else
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libc_cv_initfinit_array=no
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fi
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rm -f conftest*])
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AC_SUBST(libc_cv_initfinit_array)
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if test $libc_cv_initfinit_array = yes; then
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AC_DEFINE_UNQUOTED(HAVE_INITFINI_ARRAY)
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fi
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dnl Autoconf 2.59 doesn't support the AC_TYPE_LONG_DOUBLE macro. Instead of:
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dnl AC_TYPE_LONG_DOUBLE
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dnl AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$ac_cv_type_long_double" = x"yes")
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dnl we specify our own long double test.
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dnl Additionally, ac_cv_objext is broken so that AC_COMPILE_IFELSE cannot be
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dnl used, so use AC_TRY_COMMAND instead.
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AC_CACHE_CHECK(whether long double type exists,
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acnewlib_cv_type_long_double, [dnl
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cat > conftest.c <<EOF
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/* Check two ways: float.h defines and direct type declaration. */
|
|
#include <float.h>
|
|
#if defined(LDBL_MANT_DIG)
|
|
#define _HAVE_LONG_DOUBLE
|
|
#else
|
|
#error "LDBL != DBL"
|
|
#endif
|
|
long double test() {
|
|
long double ld = 0.0L;
|
|
return ld;
|
|
}
|
|
EOF
|
|
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
|
|
1>&AS_MESSAGE_LOG_FD])
|
|
then
|
|
acnewlib_cv_type_long_double=yes;
|
|
else
|
|
acnewlib_cv_type_long_double=no;
|
|
fi
|
|
rm -f conftest*])
|
|
if test $acnewlib_cv_type_long_double = yes; then
|
|
AC_DEFINE_UNQUOTED(_HAVE_LONG_DOUBLE)
|
|
fi
|
|
AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$acnewlib_cv_type_long_double" = x"yes")
|
|
|
|
AC_CACHE_CHECK(whether long double equals double,
|
|
newlib_ldbl_eq_dbl, [dnl
|
|
cat > conftest.c <<EOF
|
|
#include <float.h>
|
|
#if DBL_MANT_DIG == LDBL_MANT_DIG && LDBL_MIN_EXP == DBL_MIN_EXP && \
|
|
LDBL_MAX_EXP == DBL_MAX_EXP
|
|
#define _LDBL_EQ_DBL
|
|
#else
|
|
#error "LDBL != DBL"
|
|
#endif
|
|
EOF
|
|
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
|
|
1>&AS_MESSAGE_LOG_FD])
|
|
then
|
|
newlib_ldbl_eq_dbl=yes;
|
|
else
|
|
newlib_ldbl_eq_dbl=no;
|
|
fi
|
|
rm -f conftest*])
|
|
if test $newlib_ldbl_eq_dbl = yes; then
|
|
AC_DEFINE_UNQUOTED(_LDBL_EQ_DBL)
|
|
fi
|
|
|
|
AC_CONFIG_FILES([Makefile],
|
|
[if test -n "$CONFIG_FILES"; then
|
|
unset ac_file
|
|
. ${newlib_basedir}/../config-ml.in
|
|
fi],
|
|
srcdir=${srcdir}
|
|
host=${host}
|
|
with_multisubdir=${with_multisubdir}
|
|
ac_configure_args="${multilib_arg} ${ac_configure_args}"
|
|
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
|
|
newlib_basedir=${newlib_basedir}
|
|
CC="${CC}"
|
|
LDFLAGS="${LDFLAGS}"
|
|
)
|
|
AC_OUTPUT
|