mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-15 19:09:58 +08:00
826b5591dd
* configure.in: Add new --enable-newlib-reent-small option.
* configure: Regenerated.
* acconfig.h: Add _WANT_REENT_SMALL.
* newlib.hin: Regenerated minus PACKAGE macros to add
_WANT_REENT_SMALL macro.
* libc/include/sys/config.h[_WANT_REENT_SMALL]: Set _REENT_SMALL
if not already set.
* libc/stdio/fflush.c[_REENT_SMALL]: Return immediately if
there is no buffer.
* libc/stdio/local.h[_REENT_SMALL]: Fix CHECK_INIT macro to
use reentrant pointer passed in when resetting the file
pointer to one of the std streams.
418 lines
14 KiB
Plaintext
418 lines
14 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 ${enableval} for newlib-io-pos-args option) ;;
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esac], [newlib_io_pos_args=])dnl
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dnl Support --enable-newlib-io-long-long
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AC_ARG_ENABLE(newlib-io-long-long,
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[ --enable-newlib-io-long-long enable long long type support in IO functions like printf/scanf],
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[case "${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 ${enableval} for newlib-reent-small option) ;;
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esac], [newlib_reent_small=])dnl
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NEWLIB_CONFIGURE(.)
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dnl We have to enable libtool after NEWLIB_CONFIGURE because if we try and
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dnl add it into NEWLIB_CONFIGURE, executable tests are made before the first
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dnl line of the macro which fail because appropriate LDFLAGS are not set.
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if test "${use_libtool}" = "yes"; then
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AC_LIBTOOL_WIN32_DLL
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AM_PROG_LIBTOOL
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AC_PROG_AWK
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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_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 $LDFLAGS -o conftest conftest.c
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-static -nostartfiles -nostdlib 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 $libc_cv_initfinit_array = yes; then
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AC_DEFINE_UNQUOTED(HAVE_INITFINI_ARRAY)
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fi
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AC_CACHE_CHECK(for array aliasing support,
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libc_cv_array_aliasing, [dnl
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cat > conftest.c <<EOF
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char x[3] = { 'a', 'b', 'c' };
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extern char y[2] __attribute__((alias ("x+1")));
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EOF
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if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c conftest.c
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1>&AS_MESSAGE_LOG_FD])
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then
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libc_cv_array_aliasing=yes
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else
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libc_cv_array_aliasing=no
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fi
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rm -f conftest*])
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AC_SUBST(libc_cv_array_aliasing)
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|
if test $libc_cv_array_aliasing = yes; then
|
|
AC_DEFINE_UNQUOTED(_HAVE_ARRAY_ALIASING)
|
|
fi
|
|
|
|
AC_CONFIG_FILES([Makefile],
|
|
[if test -n "$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
|