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879cf9ff45
Hi, This patch implements pex_unix_exec_child using posix_spawn when available. This should especially benefit recent macOS (where vfork just calls fork), but should have equivalent or faster performance on all platforms. In addition, the implementation is substantially simpler than the vfork+exec code path. Tested on x86_64-linux. v2: Fix error handling (previously the function would be run twice in case of error), and don't use a macro that changes control flow. v3: Match file style for error-handling blocks, don't close in/out/errdes on error, and check close() for errors. libiberty/ * configure.ac (AC_CHECK_HEADERS): Add spawn.h. (checkfuncs): Add posix_spawn, posix_spawnp. (AC_CHECK_FUNCS): Add posix_spawn, posix_spawnp. * aclocal.m4, configure, config.in: Rebuild. * pex-unix.c [HAVE_POSIX_SPAWN] (pex_unix_exec_child): New function.
794 lines
22 KiB
Plaintext
794 lines
22 KiB
Plaintext
dnl Process this file with autoconf to produce a configure script
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AC_INIT
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AC_CONFIG_SRCDIR([xmalloc.c])
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AC_CONFIG_MACRO_DIRS([../config])
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# This works around the fact that libtool configuration may change LD
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# for this particular configuration, but some shells, instead of
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# keeping the changes in LD private, export them just because LD is
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# exported. We don't use libtool yet, but some day we might, so...
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ORIGINAL_LD_FOR_MULTILIBS=$LD
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dnl We use these options to decide which functions to include.
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AC_ARG_WITH(target-subdir,
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[ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
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AC_ARG_WITH(build-subdir,
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[ --with-build-subdir=SUBDIR Configuring in a subdirectory for build])
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AC_ARG_WITH(cross-host,
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[ --with-cross-host=HOST Configuring with a cross compiler])
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AC_ARG_WITH(newlib,
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[ --with-newlib Configuring with newlib])
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if test "${srcdir}" = "."; then
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if test -n "${with_build_subdir}"; then
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libiberty_topdir="${srcdir}/../.."
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with_target_subdir=
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elif test -z "${with_target_subdir}"; then
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libiberty_topdir="${srcdir}/.."
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else
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if test "${with_target_subdir}" != "."; then
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libiberty_topdir="${srcdir}/${with_multisrctop}../.."
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else
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libiberty_topdir="${srcdir}/${with_multisrctop}.."
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fi
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fi
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else
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libiberty_topdir="${srcdir}/.."
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fi
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AC_SUBST(libiberty_topdir)
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AC_CONFIG_AUX_DIR($libiberty_topdir)
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dnl Very limited version of automake's enable-maintainer-mode
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AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
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dnl maintainer-mode is disabled by default
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AC_ARG_ENABLE(maintainer-mode,
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[ --enable-maintainer-mode
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enable make rules and dependencies not useful
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(and sometimes confusing) to the casual installer],
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maintainer_mode=$enableval,
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maintainer_mode=no)
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AC_MSG_RESULT($maintainer_mode)
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if test "$maintainer_mode" = "yes"; then
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MAINT=''
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NOTMAINT='#'
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else
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MAINT='#'
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NOTMAINT=''
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fi
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AC_SUBST(MAINT)dnl
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AC_SUBST(NOTMAINT)dnl
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if test -z "$ETAGS"; then
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ETAGS=etags
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fi
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AC_SUBST([ETAGS])
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# Do we have a single-tree copy of texinfo? Even if we do, we can't
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# rely on it - libiberty is built before texinfo.
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AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
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if test "x$MAKEINFO" = "x"; then
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MAKEINFO="@echo makeinfo missing; true"
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BUILD_INFO=
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else
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BUILD_INFO=info
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case "$MAKEINFO" in
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*/missing\ makeinfo*)
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BUILD_INFO=
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AC_MSG_WARN([
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*** Makeinfo is missing. Info documentation will not be built.])
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;;
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*)
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case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
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x*\ [[1-3]].* )
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MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
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BUILD_INFO=
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AC_MSG_WARN([
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*** Makeinfo is too old. Info documentation will not be built.])
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;;
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esac
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;;
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esac
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fi
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AC_SUBST(MAKEINFO)
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AC_SUBST(BUILD_INFO)
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AC_CHECK_PROG(PERL, perl, perl, )
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if test x"$PERL" = x""; then
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HAVE_PERL='#'
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else
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HAVE_PERL=''
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fi
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AC_SUBST(HAVE_PERL)
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AC_CANONICAL_HOST
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dnl When we start using automake:
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dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
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dnl These must be called before AM_PROG_LIBTOOL, because it may want
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dnl to call AC_CHECK_PROG.
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AC_CHECK_TOOL(AR, ar)
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AC_CHECK_TOOL(RANLIB, ranlib, :)
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GCC_PLUGIN_OPTION(PLUGIN_OPTION)
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if test -n "$PLUGIN_OPTION"; then
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if $AR --help 2>&1 | grep -q "\--plugin"; then
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AR_PLUGIN_OPTION="$PLUGIN_OPTION"
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AC_SUBST(AR_PLUGIN_OPTION)
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fi
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if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
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RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
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AC_SUBST(RANLIB_PLUGIN_OPTION)
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fi
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fi
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dnl When switching to automake, replace the following with AM_ENABLE_MULTILIB.
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# Add --enable-multilib to configure.
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# 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],
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[multilib=yes])
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# Even if the default multilib is not a cross compilation,
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# it may be that some of the other multilibs are.
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if test $cross_compiling = no && test $multilib = yes \
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&& test "x${with_multisubdir}" != x ; then
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cross_compiling=maybe
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fi
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# We may wish to install the target headers somewhere.
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AC_MSG_CHECKING([whether to install libiberty headers and static library])
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dnl install-libiberty is disabled by default
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AC_ARG_ENABLE(install-libiberty,
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[ --enable-install-libiberty Install headers and library for end users],
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enable_install_libiberty=$enableval,
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enable_install_libiberty=no)dnl
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# Option parsed, now set things appropriately.
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case x"$enable_install_libiberty" in
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xyes|x)
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target_header_dir=libiberty
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;;
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xno)
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target_header_dir=
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;;
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*)
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# This could be sanity-checked in various ways...
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target_header_dir="${enable_install_libiberty}"
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;;
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esac
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AC_MSG_RESULT($enable_install_libiberty)
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AC_MSG_NOTICE([target_header_dir = $target_header_dir])
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GCC_NO_EXECUTABLES
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AC_PROG_CC
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AC_GNU_SOURCE
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AC_SYS_LARGEFILE
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AC_PROG_CPP_WERROR
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ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wc++-compat \
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-Wstrict-prototypes \
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-Wshadow=local], [ac_libiberty_warn_cflags])
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ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([], [ac_libiberty_warn_cflags])
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AC_PROG_CC_C_O
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# autoconf is lame and doesn't give us any substitution variable for this.
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if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
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NO_MINUS_C_MINUS_O=yes
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else
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OUTPUT_OPTION='-o $@'
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fi
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AC_SUBST(NO_MINUS_C_MINUS_O)
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AC_SUBST(OUTPUT_OPTION)
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AC_C_CONST
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AC_C_INLINE
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AC_C_BIGENDIAN
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dnl When we start using libtool:
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dnl Default to a non shared library. This may be overridden by the
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dnl configure option --enable-shared.
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dnl AM_DISABLE_SHARED
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dnl When we start using libtool:
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dnl AM_PROG_LIBTOOL
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dnl When we start using automake:
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dnl AM_CONFIG_HEADER(config.h:config.in)
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AC_CONFIG_HEADER(config.h:config.in)
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dnl When we start using automake:
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dnl AM_MAINTAINER_MODE
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dnl AC_EXEEXT
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dnl When we start using automake:
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dnl AM_PROG_INSTALL
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AC_PROG_INSTALL
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# Don't build the shared library for build.
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if [[ -n "${with_build_subdir}" ]]; then
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enable_shared=no
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fi
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frag=
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case "${host}" in
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rs6000-ibm-aix3.1 | rs6000-ibm-aix)
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frag=mh-aix ;;
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*-*-cxux7*) frag=mh-cxux7 ;;
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*-*-freebsd2.1.*) frag=mh-fbsd21 ;;
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*-*-freebsd2.2.[[012]]) frag=mh-fbsd21 ;;
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i370-*-opened*) frag=mh-openedition ;;
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i[[34567]]86-*-windows*) frag=mh-windows ;;
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esac
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if [[ -n "${frag}" ]]; then
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frag=${libiberty_topdir}/libiberty/config/$frag
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fi
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GCC_PICFLAG
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# If they didn't specify --enable-shared, don't generate shared libs.
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case "${enable_shared}" in
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yes) shared=yes ;;
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no) shared=no ;;
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"") shared=no ;;
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*) shared=yes ;;
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esac
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# ...unless --enable-host-{shared,pie} was passed from top-level config:
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if [[ "${enable_host_shared}" = "yes" ]] || [[ "${enable_host_pie}" = "yes" ]]; then
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shared=yes
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fi
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if [[ "${shared}" != "yes" ]]; then
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PICFLAG=
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fi
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AC_SUBST(PICFLAG)
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NOASANFLAG=
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case " ${CFLAGS} " in
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*\ -fsanitize=address\ *) NOASANFLAG=-fno-sanitize=address ;;
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*\ -fsanitize=hwaddress\ *) NOASANFLAG=-fno-sanitize=hwaddress ;;
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esac
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AC_SUBST(NOASANFLAG)
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GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
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AC_SUBST(CET_HOST_FLAGS)
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echo "# Warning: this fragment is automatically generated" > temp-frag
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if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then
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echo "Appending ${frag} to xhost-mkfrag"
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echo "# Following fragment copied from ${frag}" >> temp-frag
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cat ${frag} >> temp-frag
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fi
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# record if we want to build shared libs.
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if [[ "${shared}" = "yes" ]]; then
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echo enable_shared = yes >> temp-frag
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else
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echo enable_shared = no >> temp-frag
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fi
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frag=xhost-mkfrag
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${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
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host_makefile_frag=${frag}
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AC_SUBST_FILE(host_makefile_frag)
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# It's OK to check for header files. Although the compiler may not be
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# able to link anything, it had better be able to at least compile
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# something.
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AC_CHECK_HEADERS(sys/file.h sys/param.h limits.h stdlib.h malloc.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h sys/pstat.h sys/sysmp.h sys/sysinfo.h machine/hal_sysinfo.h sys/table.h sys/sysctl.h sys/systemcfg.h stdint.h stdio_ext.h process.h sys/prctl.h spawn.h)
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AC_HEADER_SYS_WAIT
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AC_HEADER_TIME
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libiberty_AC_DECLARE_ERRNO
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# Determine sizes of some types.
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AC_CHECK_SIZEOF([int])
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AC_CHECK_SIZEOF([long])
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AC_CHECK_SIZEOF([size_t])
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# Check for presense of long long
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AC_CHECK_TYPE([long long],
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[AC_DEFINE(HAVE_LONG_LONG, 1, [Define if you have the `long long' type.]) AC_CHECK_SIZEOF([long long])],
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[])
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# Look for a 64-bit type.
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AC_MSG_CHECKING([for a 64-bit type])
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AC_CACHE_VAL(liberty_cv_uint64,
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[AC_TRY_COMPILE(
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[#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif],
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[extern uint64_t foo;],
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liberty_cv_uint64=uint64_t,
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[AC_TRY_COMPILE(
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[#ifdef HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#ifndef CHAR_BIT
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#define CHAR_BIT 8
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#endif],
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[extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
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liberty_cv_uint64="unsigned long",
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[AC_TRY_COMPILE(
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[#ifdef HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#ifndef CHAR_BIT
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#define CHAR_BIT 8
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#endif],
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[extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
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liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
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AC_MSG_RESULT($liberty_cv_uint64)
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if test "$liberty_cv_uint64" != none; then
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AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
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[Define to an unsigned 64-bit type available in the compiler.])
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fi
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AC_TYPE_INTPTR_T
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AC_TYPE_UINTPTR_T
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AC_TYPE_SSIZE_T
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# Given the above check, we always have uintptr_t or a fallback
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# definition. So define HAVE_UINTPTR_T in case any imported code
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# relies on it.
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AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
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AC_TYPE_PID_T
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# This is the list of functions which libiberty will provide if they
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# are not available on the host.
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funcs="asprintf"
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funcs="$funcs atexit"
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funcs="$funcs basename"
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funcs="$funcs bcmp"
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funcs="$funcs bcopy"
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funcs="$funcs bsearch"
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funcs="$funcs bzero"
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funcs="$funcs calloc"
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funcs="$funcs clock"
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funcs="$funcs ffs"
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funcs="$funcs getcwd"
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funcs="$funcs getpagesize"
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funcs="$funcs gettimeofday"
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funcs="$funcs index"
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funcs="$funcs insque"
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funcs="$funcs memchr"
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funcs="$funcs memcmp"
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funcs="$funcs memcpy"
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funcs="$funcs memmem"
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funcs="$funcs memmove"
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funcs="$funcs mempcpy"
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funcs="$funcs memset"
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funcs="$funcs mkstemps"
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funcs="$funcs putenv"
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funcs="$funcs random"
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funcs="$funcs rename"
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funcs="$funcs rindex"
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funcs="$funcs setenv"
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funcs="$funcs snprintf"
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funcs="$funcs sigsetmask"
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funcs="$funcs stpcpy"
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funcs="$funcs stpncpy"
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funcs="$funcs strcasecmp"
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funcs="$funcs strchr"
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funcs="$funcs strdup"
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funcs="$funcs strncasecmp"
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funcs="$funcs strndup"
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funcs="$funcs strnlen"
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funcs="$funcs strrchr"
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funcs="$funcs strstr"
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funcs="$funcs strtod"
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funcs="$funcs strtol"
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funcs="$funcs strtoul"
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funcs="$funcs strtoll"
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funcs="$funcs strtoull"
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funcs="$funcs strverscmp"
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funcs="$funcs tmpnam"
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funcs="$funcs vasprintf"
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funcs="$funcs vfprintf"
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funcs="$funcs vprintf"
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funcs="$funcs vsnprintf"
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funcs="$funcs vsprintf"
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funcs="$funcs waitpid"
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funcs="$funcs setproctitle"
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# Also in the old function.def file: alloca, vfork, getopt.
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vars="sys_errlist sys_nerr sys_siglist"
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checkfuncs="__fsetlocking canonicalize_file_name dup3 getrlimit getrusage \
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getsysinfo gettimeofday on_exit pipe2 posix_spawn posix_spawnp psignal \
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pstat_getdynamic pstat_getstatic \
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realpath setrlimit spawnve spawnvpe strerror strsignal sysconf sysctl \
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sysmp table times wait3 wait4"
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# Darwin has sbrk, but it is deprecated and that produces build-time warnings
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# so do not check for it.
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case "${host}" in
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*-*-darwin*) ;;
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*) checkfuncs="$checkfuncs sbrk"
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esac
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# These are neither executed nor required, but they help keep
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# autoheader happy without adding a bunch of text to acconfig.h.
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if test "x" = "y"; then
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AC_CHECK_FUNCS(asprintf atexit \
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basename bcmp bcopy bsearch bzero \
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calloc canonicalize_file_name clock \
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dup3 \
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ffs __fsetlocking \
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getcwd getpagesize getrlimit getrusage getsysinfo gettimeofday \
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index insque \
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memchr memcmp memcpy memmem memmove memset mkstemps \
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on_exit \
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pipe2 posix_spawn posix_spawnp psignal \
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pstat_getdynamic pstat_getstatic putenv \
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random realpath rename rindex \
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sbrk setenv setproctitle setrlimit sigsetmask snprintf spawnve spawnvpe \
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stpcpy stpncpy strcasecmp strchr strdup \
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strerror strncasecmp strndup strnlen strrchr strsignal strstr strtod \
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strtol strtoul strtoll strtoull strverscmp sysconf sysctl sysmp \
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table times tmpnam \
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vasprintf vfprintf vprintf vsprintf \
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wait3 wait4 waitpid)
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AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf, strtol, strtoul, strtoll, strtoull, strnlen])
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AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
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AC_DEFINE(HAVE_SYS_NERR, 1, [Define if you have the sys_nerr variable.])
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AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
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fi
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# For each of these functions, if the host does not provide the
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# function we want to put FN.o in LIBOBJS, and if the host does
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# provide the function, we want to define HAVE_FN in config.h.
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setobjs=
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CHECK=
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if test -n "${with_target_subdir}"; then
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|
||
# We are being configured as a target library. AC_REPLACE_FUNCS
|
||
# may not work correctly, because the compiler may not be able to
|
||
# link executables. Note that we may still be being configured
|
||
# native.
|
||
|
||
# If we are being configured for newlib, we know which functions
|
||
# newlib provide and which ones we will be expected to provide.
|
||
|
||
if test "x${with_newlib}" = "xyes"; then
|
||
AC_LIBOBJ([asprintf])
|
||
AC_LIBOBJ([basename])
|
||
AC_LIBOBJ([insque])
|
||
AC_LIBOBJ([random])
|
||
AC_LIBOBJ([strdup])
|
||
AC_LIBOBJ([vasprintf])
|
||
|
||
for f in $funcs; do
|
||
case "$f" in
|
||
asprintf | basename | insque | random | strdup | vasprintf)
|
||
;;
|
||
*)
|
||
n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
|
||
AC_DEFINE_UNQUOTED($n)
|
||
;;
|
||
esac
|
||
done
|
||
|
||
# newlib doesnt provide any of the variables in $vars, so we
|
||
# dont have to check them here.
|
||
|
||
# Of the functions in $checkfuncs, newlib only has strerror.
|
||
AC_DEFINE(HAVE_STRERROR)
|
||
|
||
setobjs=yes
|
||
|
||
fi
|
||
|
||
# If we are being configured for Mingw, we know which functions
|
||
# Mingw provides and which ones we will be expected to provide.
|
||
|
||
case "${host}" in
|
||
*-*-mingw*)
|
||
AC_LIBOBJ([asprintf])
|
||
AC_LIBOBJ([basename])
|
||
AC_LIBOBJ([bcmp])
|
||
AC_LIBOBJ([bcopy])
|
||
AC_LIBOBJ([bzero])
|
||
AC_LIBOBJ([clock])
|
||
AC_LIBOBJ([ffs])
|
||
AC_LIBOBJ([getpagesize])
|
||
AC_LIBOBJ([index])
|
||
AC_LIBOBJ([insque])
|
||
AC_LIBOBJ([mempcpy])
|
||
AC_LIBOBJ([mkstemps])
|
||
AC_LIBOBJ([random])
|
||
AC_LIBOBJ([rindex])
|
||
AC_LIBOBJ([sigsetmask])
|
||
AC_LIBOBJ([stpcpy])
|
||
AC_LIBOBJ([stpncpy])
|
||
AC_LIBOBJ([strndup])
|
||
AC_LIBOBJ([strnlen])
|
||
AC_LIBOBJ([strverscmp])
|
||
AC_LIBOBJ([vasprintf])
|
||
AC_LIBOBJ([waitpid])
|
||
|
||
for f in $funcs; do
|
||
case "$f" in
|
||
asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strnlen | strverscmp | vasprintf | waitpid)
|
||
;;
|
||
*)
|
||
n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
|
||
AC_DEFINE_UNQUOTED($n)
|
||
;;
|
||
esac
|
||
done
|
||
|
||
# Mingw doesnt provide any of the variables in $vars, so we
|
||
# dont have to check them here.
|
||
|
||
# Of the functions in $checkfuncs, Mingw only has strerror.
|
||
AC_DEFINE(HAVE_STRERROR)
|
||
|
||
setobjs=yes
|
||
;;
|
||
|
||
*-*-msdosdjgpp)
|
||
AC_LIBOBJ([vasprintf])
|
||
AC_LIBOBJ([vsnprintf])
|
||
AC_LIBOBJ([snprintf])
|
||
AC_LIBOBJ([asprintf])
|
||
|
||
for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \
|
||
getcwd getpagesize getrusage gettimeofday \
|
||
index insque memchr memcmp memcpy memmove memset psignal \
|
||
putenv random rename rindex sbrk setenv stpcpy strcasecmp \
|
||
strchr strdup strerror strncasecmp strrchr strstr strtod \
|
||
strtol strtoul sysconf times tmpnam vfprintf vprintf \
|
||
vsprintf waitpid
|
||
do
|
||
n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
|
||
AC_DEFINE_UNQUOTED($n)
|
||
done
|
||
|
||
|
||
setobjs=yes
|
||
;;
|
||
|
||
esac
|
||
|
||
else
|
||
|
||
# Not a target library, so we set things up to run the test suite.
|
||
CHECK=really-check
|
||
|
||
fi
|
||
|
||
AC_SUBST(CHECK)
|
||
AC_SUBST(target_header_dir)
|
||
|
||
case "${host}" in
|
||
*-*-cygwin* | *-*-mingw*)
|
||
AC_DEFINE(HAVE_SYS_ERRLIST)
|
||
AC_DEFINE(HAVE_SYS_NERR)
|
||
;;
|
||
esac
|
||
|
||
if test -z "${setobjs}"; then
|
||
case "${host}" in
|
||
|
||
*-*-vxworks*)
|
||
# Handle VxWorks configuration specially, since on VxWorks the
|
||
# libraries are actually on the target board, not in the file
|
||
# system.
|
||
AC_LIBOBJ([basename])
|
||
AC_LIBOBJ([getpagesize])
|
||
AC_LIBOBJ([insque])
|
||
AC_LIBOBJ([random])
|
||
AC_LIBOBJ([strcasecmp])
|
||
AC_LIBOBJ([strncasecmp])
|
||
AC_LIBOBJ([strdup])
|
||
AC_LIBOBJ([vfork])
|
||
AC_LIBOBJ([waitpid])
|
||
AC_LIBOBJ([vasprintf])
|
||
for f in $funcs; do
|
||
case "$f" in
|
||
basename | getpagesize | insque | random | strcasecmp)
|
||
;;
|
||
strncasecmp | strdup | vfork | waitpid | vasprintf)
|
||
;;
|
||
*)
|
||
n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
|
||
AC_DEFINE_UNQUOTED($n)
|
||
;;
|
||
esac
|
||
done
|
||
|
||
# VxWorks doesn't provide any of the variables in $vars, so we
|
||
# don't have to check them here.
|
||
|
||
# Of the functions in $checkfuncs, VxWorks only has strerror.
|
||
AC_DEFINE(HAVE_STRERROR)
|
||
|
||
setobjs=yes
|
||
;;
|
||
|
||
esac
|
||
fi
|
||
|
||
if test -z "${setobjs}"; then
|
||
|
||
case "${host}" in
|
||
|
||
*-*-android*)
|
||
# On android, getpagesize is defined in unistd.h as a static inline
|
||
# function, which AC_CHECK_FUNCS does not handle properly.
|
||
ac_cv_func_getpagesize=yes
|
||
;;
|
||
|
||
hppa*-*-hpux*)
|
||
# Replace system snprintf and vsnprintf with libiberty implementations.
|
||
AC_LIBOBJ([snprintf])
|
||
AC_LIBOBJ([vsnprintf])
|
||
;;
|
||
|
||
*-*-mingw32*)
|
||
# Under mingw32, sys_nerr and sys_errlist exist, but they are
|
||
# macros, so the test below won't find them.
|
||
libiberty_cv_var_sys_nerr=yes
|
||
libiberty_cv_var_sys_errlist=yes
|
||
;;
|
||
|
||
*-*-msdosdjgpp*)
|
||
# vfork and fork are stubs.
|
||
ac_cv_func_vfork_works=no
|
||
;;
|
||
|
||
*-*-uwin*)
|
||
# Under some versions of uwin, vfork is notoriously buggy and the test
|
||
# can hang configure; on other versions, vfork exists just as a stub.
|
||
# FIXME: This should be removed once vfork in uwin's runtime is fixed.
|
||
ac_cv_func_vfork_works=no
|
||
# Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
|
||
# macros (actually, these are imported from a DLL, but the end effect
|
||
# is the same), so the test below won't find them.
|
||
libiberty_cv_var_sys_nerr=yes
|
||
libiberty_cv_var_sys_errlist=yes
|
||
;;
|
||
|
||
*-*-*vms*)
|
||
# Under VMS, vfork works very different than on Unix. The standard test
|
||
# won't work, and it isn't easily adaptable. It makes more sense to
|
||
# just force it.
|
||
ac_cv_func_vfork_works=yes
|
||
;;
|
||
|
||
esac
|
||
|
||
# We haven't set the list of objects yet. Use the standard autoconf
|
||
# tests. This will only work if the compiler works.
|
||
AC_ISC_POSIX
|
||
AC_REPLACE_FUNCS($funcs)
|
||
libiberty_AC_FUNC_C_ALLOCA
|
||
AC_FUNC_FORK
|
||
if test $ac_cv_func_vfork_works = no; then
|
||
AC_LIBOBJ([vfork])
|
||
fi
|
||
# We only need _doprnt if we might use it to implement v*printf.
|
||
if test $ac_cv_func_vprintf != yes \
|
||
|| test $ac_cv_func_vfprintf != yes \
|
||
|| test $ac_cv_func_vsprintf != yes; then
|
||
AC_REPLACE_FUNCS(_doprnt)
|
||
else
|
||
AC_CHECK_FUNCS(_doprnt)
|
||
fi
|
||
|
||
for v in $vars; do
|
||
AC_MSG_CHECKING([for $v])
|
||
AC_CACHE_VAL(libiberty_cv_var_$v,
|
||
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern int $v [];]],[[if ($v [0]) return 1;]])],
|
||
[eval "libiberty_cv_var_$v=yes"],
|
||
[eval "libiberty_cv_var_$v=no"])])
|
||
if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
|
||
AC_MSG_RESULT(yes)
|
||
n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
|
||
AC_DEFINE_UNQUOTED($n)
|
||
else
|
||
AC_MSG_RESULT(no)
|
||
fi
|
||
done
|
||
|
||
# special check for _system_configuration because AIX <4.3.2 do not
|
||
# contain the `physmem' member.
|
||
AC_MSG_CHECKING([for external symbol _system_configuration])
|
||
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
|
||
[[double x = _system_configuration.physmem;]])],
|
||
[AC_MSG_RESULT([yes])
|
||
AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
|
||
[Define if you have the _system_configuration variable.])],
|
||
[AC_MSG_RESULT([no])])
|
||
|
||
AC_CHECK_FUNCS($checkfuncs)
|
||
AC_CHECK_DECLS([basename(char *), ffs, asprintf, vasprintf, snprintf, vsnprintf])
|
||
AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc])
|
||
case "${host}" in
|
||
*-*-darwin*) ;; # Darwin's sbrk implementation is deprecated.
|
||
*) AC_CHECK_DECLS([sbrk]);;
|
||
esac
|
||
AC_CHECK_DECLS([strtol, strtoul, strtoll, strtoull])
|
||
AC_CHECK_DECLS([strverscmp])
|
||
AC_CHECK_DECLS([strnlen])
|
||
libiberty_NEED_DECLARATION(canonicalize_file_name)
|
||
fi
|
||
|
||
# Figure out which version of pexecute to use.
|
||
case "${host}" in
|
||
*-*-mingw* | *-*-winnt*) pexecute=pex-win32 ;;
|
||
*-*-msdosdjgpp*) pexecute=pex-djgpp ;;
|
||
*-*-msdos*) pexecute=pex-msdos ;;
|
||
*) pexecute=pex-unix ;;
|
||
esac
|
||
AC_SUBST(pexecute)
|
||
|
||
libiberty_AC_FUNC_STRNCMP
|
||
|
||
# Install a library built with a cross compiler in $(tooldir) rather
|
||
# than $(libdir).
|
||
if test -z "${with_cross_host}"; then
|
||
INSTALL_DEST=libdir
|
||
else
|
||
INSTALL_DEST=tooldir
|
||
fi
|
||
AC_SUBST(INSTALL_DEST)
|
||
|
||
m4_pattern_allow(LIBOBJS)
|
||
L=""
|
||
for l in x $LIBOBJS; do
|
||
case $l in
|
||
x) ;;
|
||
*) L="$L ./$l" ;;
|
||
esac
|
||
done
|
||
LIBOBJS="$L"
|
||
|
||
dnl Required by html and install-html
|
||
AC_SUBST(datarootdir)
|
||
AC_SUBST(docdir)
|
||
AC_SUBST(htmldir)
|
||
|
||
# We need multilib support, but only if configuring for the target.
|
||
AC_CONFIG_FILES([Makefile testsuite/Makefile])
|
||
AC_CONFIG_COMMANDS([default],
|
||
[[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
|
||
if test -n "$CONFIG_FILES"; then
|
||
if test -n "${with_target_subdir}"; then
|
||
# FIXME: We shouldn't need to set ac_file
|
||
ac_file=Makefile
|
||
LD="${ORIGINAL_LD_FOR_MULTILIBS}"
|
||
. ${libiberty_topdir}/config-ml.in
|
||
fi
|
||
fi]],
|
||
[[srcdir=${srcdir}
|
||
host=${host}
|
||
target=${target}
|
||
with_target_subdir=${with_target_subdir}
|
||
with_multisubdir=${with_multisubdir}
|
||
ac_configure_args="--enable-multilib ${ac_configure_args}"
|
||
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
|
||
ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
|
||
libiberty_topdir=${libiberty_topdir}
|
||
]])
|
||
AC_OUTPUT
|