383 lines
11 KiB
Plaintext
383 lines
11 KiB
Plaintext
dnl Process this file with autoconf to produce a configure script
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AC_PREREQ(2.13)
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AC_INIT(pexecute.c)
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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])
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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 "${srcdir}" = "."; then
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if test -z "${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="${srcdir}/.."
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fi
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AC_CONFIG_AUX_DIR($libiberty_topdir)
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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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# FIXME: We temporarily define our own version of AC_PROG_CC. This is
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# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
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# are probably using a cross compiler, which will not be able to fully
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# link an executable. This should really be fixed in autoconf
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# itself.
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AC_DEFUN(LIB_AC_PROG_CC,
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[AC_BEFORE([$0], [AC_PROG_CPP])dnl
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AC_PROVIDE([AC_PROG_CC])
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AC_CHECK_PROG(CC, gcc, gcc)
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if test -z "$CC"; then
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AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
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test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
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fi
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AC_PROG_CC_GNU
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if test $ac_cv_prog_gcc = yes; then
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GCC=yes
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ac_libiberty_warn_cflags='-W -Wall -Wtraditional'
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dnl Check whether -g works, even if CFLAGS is set, in case the package
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dnl plays around with CFLAGS (such as to build both debugging and
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dnl normal versions of a library), tasteless as that idea is.
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ac_test_CFLAGS="${CFLAGS+set}"
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS=
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AC_PROG_CC_G
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if test "$ac_test_CFLAGS" = set; then
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CFLAGS="$ac_save_CFLAGS"
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elif test $ac_cv_prog_cc_g = yes; then
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CFLAGS="-g -O2"
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else
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CFLAGS="-O2"
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fi
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else
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GCC=
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ac_libiberty_warn_cflags=
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test "${CFLAGS+set}" = set || CFLAGS="-g"
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fi
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])
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AC_SUBST(ac_libiberty_warn_cflags)
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LIB_AC_PROG_CC
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AC_ISC_POSIX
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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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. ${srcdir}/config.table
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host_makefile_frag=${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 stdlib.h string.h unistd.h strings.h sys/time.h sys/resource.h sys/stat.h)
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AC_HEADER_SYS_WAIT
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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="$funcs bzero"
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funcs="$funcs calloc"
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funcs="$funcs clock"
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funcs="$funcs getcwd"
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funcs="$funcs getpagesize"
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funcs="$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="$funcs memmove"
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funcs="$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="$funcs sigsetmask"
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funcs="$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 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="$funcs tmpnam"
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funcs="$funcs vasprintf"
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funcs="$funcs vfprintf"
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funcs="$funcs vprintf"
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funcs="$funcs vsprintf"
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funcs="$funcs waitpid"
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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="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
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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 basename bcmp bcopy bzero calloc clock getcwd)
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AC_CHECK_FUNCS(getpagesize index insque mkstemps memchr memcmp memcpy memmove)
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AC_CHECK_FUNCS(memset putenv random rename rindex sigsetmask strcasecmp)
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AC_CHECK_FUNCS(setenv strchr strdup strncasecmp strrchr strstr strtod strtol)
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AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid)
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AC_DEFINE(HAVE_SYS_ERRLIST)
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AC_DEFINE(HAVE_SYS_NERR)
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AC_DEFINE(HAVE_SYS_SIGLIST)
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AC_CHECK_FUNCS(getrusage on_exit psignal strerror strsignal sysconf times)
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AC_CHECK_FUNCS(sbrk gettimeofday)
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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. Also,
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# if the host does not provide alloca, we set ALLOCA to alloca.o
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setobjs=
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CHECK=
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if test -n "${with_target_subdir}"; then
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# We are being configured as a target library. AC_REPLACE_FUNCS
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# may not work correctly, because the compiler may not be able to
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# link executables. Note that we may still be being configured
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# native.
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# If we are being configured for newlib, we know which functions
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# newlib provide and which ones we will be expected to provide.
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if test "x${with_newlib}" = "xyes"; then
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ALLOCA="alloca.o"
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LIBOBJS="asprintf.o basename.o insque.o random.o strdup.o vasprintf.o"
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for f in $funcs; do
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case "$f" in
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asprintf | basename | insque | random | strdup | vasprintf)
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;;
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*)
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n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
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AC_DEFINE_UNQUOTED($n)
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;;
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esac
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done
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# newlib doesnt provide any of the variables in $vars, so we
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# dont have to check them here.
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# Of the functions in $checkfuncs, newlib only has strerror.
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AC_DEFINE(HAVE_STRERROR)
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setobjs=yes
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fi
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else
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# Not a target library, so we set things up to run the test suite.
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CHECK=check-cplus-dem
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fi
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AC_SUBST(CHECK)
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if test -z "${setobjs}"; then
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case "${host}" in
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*-*-vxworks*)
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# Handle VxWorks configuration specially, since on VxWorks the
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# libraries are actually on the target board, not in the file
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# system.
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LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
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LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
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for f in $funcs; do
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case "$f" in
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basename | getpagesize | insque | random | strcasecmp)
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;;
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strncasecmp | strdup | vfork | waitpid | vasprintf)
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;;
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*)
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n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
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AC_DEFINE_UNQUOTED($n)
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;;
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esac
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done
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# VxWorks doesn't provide any of the variables in $vars, so we
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# don't have to check them here.
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# Of the functions in $checkfuncs, VxWorks only has strerror.
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AC_DEFINE(HAVE_STRERROR)
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setobjs=yes
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;;
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esac
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fi
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if test -z "${setobjs}"; then
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case "${host}" in
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*-*-cygwin*)
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# The Cygwin library actually uses a couple of files from
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# libiberty when it is built. If we are building a native
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# Cygwin, and we run the tests, we will appear to have these
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# files. However, when we go on to build winsup, we will wind up
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# with a library which does not have the files, since they should
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# have come from libiberty.
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# We handle this by removing the functions the winsup library
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# provides from our shell variables, so that they appear to be
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# missing.
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funcs="`echo $funcs | sed -e 's/random//'`"
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LIBOBJS="$LIBOBJS random.o"
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vars="`echo $vars | sed -e 's/sys_siglist//'`"
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checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
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;;
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*-*-mingw32*)
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# Under mingw32, sys_nerr and sys_errlist exist, but they are
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# macros, so the test below won't find them.
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vars="`echo $vars | sed -e 's/sys_nerr//' -e 's/sys_errlist//'`"
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AC_DEFINE(HAVE_SYS_NERR)
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AC_DEFINE(HAVE_SYS_ERRLIST)
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;;
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*-*-uwin*)
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# Under some versions of uwin, vfork is notoriously buggy and the test
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# can hang configure; on other versions, vfork exists just as a stub.
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# FIXME: This should be removed once vfork in uwin's runtime is fixed.
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ac_cv_func_vfork_works=no
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# Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
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# macros (actually, these are imported from a DLL, but the end effect
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# is the same), so the test below won't find them.
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AC_DEFINE(HAVE_SYS_NERR)
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AC_DEFINE(HAVE_SYS_ERRLIST)
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;;
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esac
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# We haven't set the list of objects yet. Use the standard autoconf
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# tests. This will only work if the compiler works.
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AC_PROG_CC_WORKS
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AC_REPLACE_FUNCS($funcs)
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case "${host}" in
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*-*-interix)
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# On Interix, it wrongly concludes that the MSVC compiler supports alloca.
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# (MSVC does on Win32, not on Interix.)
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# This should be temporary.
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ac_cv_header_alloca_h=no
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ac_cv_func_alloca_works=no
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ALLOCA=alloca.o
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cat >> confdefs.h <<\EOF
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#define C_ALLOCA 1
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EOF
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cat >> confdefs.h <<EOF
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#define STACK_DIRECTION -1
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EOF
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;;
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*)
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AC_FUNC_ALLOCA
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;;
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esac
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AC_FUNC_VFORK
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if test $ac_cv_func_vfork_works = no; then
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LIBOBJS="$LIBOBJS vfork.o"
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fi
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for v in $vars; do
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AC_MSG_CHECKING([for $v])
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AC_CACHE_VAL(libiberty_cv_var_$v,
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[AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
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[eval "libiberty_cv_var_$v=yes"],
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[eval "libiberty_cv_var_$v=no"])])
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if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
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AC_MSG_RESULT(yes)
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n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
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AC_DEFINE_UNQUOTED($n)
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else
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AC_MSG_RESULT(no)
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fi
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done
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AC_CHECK_FUNCS($checkfuncs)
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fi
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# Install a library built with a cross compiler in $(tooldir) rather
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# than $(libdir).
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if test -z "${with_cross_host}"; then
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INSTALL_DEST=libdir
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else
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INSTALL_DEST=tooldir
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fi
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AC_SUBST(INSTALL_DEST)
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# We need multilib support, but only if configuring for the target.
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AC_OUTPUT(Makefile testsuite/Makefile,
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[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
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if test -n "$CONFIG_FILES"; then
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if test -n "${with_target_subdir}"; then
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# FIXME: We shouldn't need to set ac_file
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ac_file=Makefile
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. ${libiberty_topdir}/config-ml.in
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fi
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fi],
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srcdir=${srcdir}
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host=${host}
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target=${target}
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with_target_subdir=${with_target_subdir}
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with_multisubdir=${with_multisubdir}
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ac_configure_args="--enable-multilib ${ac_configure_args}"
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CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
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libiberty_topdir=${libiberty_topdir}
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)
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