| dnl Process this file with autoconf to produce a configure script. |
| AC_REVISION([$CVSid$]) |
| AC_PREREQ(2.11)dnl dnl Minimum Autoconf version required. |
| AC_INIT(include/features.h) |
| AC_CONFIG_HEADER(config.h) |
| AC_CONFIG_AUX_DIR(scripts) |
| |
| # This will get text that should go into config.make. |
| config_vars= |
| |
| # Check for a --with-gmp argument and set gmp-srcdir in config.make. |
| AC_ARG_WITH(gmp, dnl |
| --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed), |
| [dnl |
| case "$with_gmp" in |
| yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;; |
| ''|no) ;; |
| *) config_vars="$config_vars |
| gmp-srcdir = $withval" ;; |
| esac |
| ]) |
| # Check for a --with-gettext argument and set gettext-srcdir in config.make. |
| AC_ARG_WITH(gettext, dnl |
| --with-gettext=DIR find GNU gettext source code in DIR (not needed), |
| [dnl |
| case "$with_gettext" in |
| yes) |
| AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;; |
| ''|no) ;; |
| *) |
| config_vars="$config_vars |
| gettext-srcdir = $withval" ;; |
| esac |
| ]) |
| |
| dnl Arguments to specify presence of other packages/features. |
| AC_ARG_WITH(fp, dnl |
| [ --with-fp if using floating-point hardware [default=yes]], |
| with_fp=$withval, with_fp=yes) |
| AC_ARG_WITH(binutils, dnl |
| --with-binutils=PATH specify location of binutils (as and ld), |
| path_binutils=$withval, path_binutils='') |
| AC_ARG_WITH(elf, dnl |
| --with-elf if using the ELF object format, |
| elf=$withval, elf=no) |
| AC_ARG_WITH(cvs, dnl |
| [ --without-cvs if CVS should not be used], |
| with_cvs=$withval, with_cvs=yes) |
| AC_SUBST(with_cvs) |
| |
| AC_ARG_WITH(headers, dnl |
| [ --with-headers=PATH location of system headers to use |
| [e.g. /usr/src/linux/include] |
| [default=compiler default]], |
| sysheaders=$withval, sysheaders='') |
| |
| AC_ARG_ENABLE(libio, dnl |
| [ --enable-libio build in GNU libio instead of GNU stdio], |
| [if test $enableval = yes; then |
| stdio=libio |
| else |
| stdio=stdio |
| fi], |
| stdio=default) |
| |
| AC_ARG_ENABLE(sanity-checks, dnl |
| [ --disable-sanity-checks really do not use threads (should not be used |
| except in special situations) [default=yes]], |
| enable_sanity=$enableval, enable_sanity=yes) |
| |
| dnl Arguments to enable or disable building the static, shared, profiled, |
| dnl and -fomit-frame-pointer libraries. |
| AC_ARG_ENABLE(static, dnl |
| [ --enable-static build static library [default=yes]], |
| static=$enableval, static=yes) |
| AC_ARG_ENABLE(shared, dnl |
| [ --enable-shared build shared library [default=yes if GNU ld & ELF]], |
| shared=$enableval, shared=default) |
| AC_ARG_ENABLE(profile, dnl |
| [ --enable-profile build profiled library [default=yes]], |
| profile=$enableval, profile=yes) |
| AC_ARG_ENABLE(omitfp, dnl |
| [ --enable-omitfp build undebuggable optimized library [default=no]], |
| omitfp=$enableval, omitfp=no) |
| AC_ARG_ENABLE(bounded, dnl |
| [ --enable-bounded build with runtime bounds checking [default=no]], |
| bounded=$enableval, bounded=no) |
| AC_ARG_ENABLE(versioning, dnl |
| [ --disable-versioning do not include versioning information in the |
| library objects [default=yes if supported]], |
| enable_versioning=$enableval, enable_versioning=yes) |
| |
| dnl Generic infrastructure for drop-in additions to libc. |
| AC_ARG_ENABLE(add-ons, dnl |
| [ --enable-add-ons[=DIR1,DIR2]... |
| configure and build add-ons in DIR1,DIR2,... |
| search for add-ons if no parameter given], |
| [case "$enableval" in |
| yes) if test "$srcdir" = "."; then |
| add_ons=`echo */configure | sed -e 's!/configure!!g'` |
| else |
| add_ons=`echo $srcdir/*/configure | \ |
| sed -e 's!/configure!!g' -e "s!$srcdir/!!g"` |
| fi;; |
| *) add_ons=`echo "$enableval" | sed 's/,/ /g'`;; |
| esac], |
| [add_ons=]) |
| |
| AC_CONFIG_SUBDIRS($add_ons) |
| add_ons_pfx= |
| if test x"$add_ons" != x; then |
| for f in $add_ons; do |
| # Test whether such a subdir really exists. |
| if test -d $srcdir/$f; then |
| add_ons_pfx="$add_ons_pfx $f/" |
| else |
| AC_MSG_ERROR(add-on directory \"$f\" does not exist) |
| fi |
| done |
| fi |
| |
| dnl On some platforms we cannot use dynamic loading. We must provide |
| dnl static NSS modules. |
| AC_ARG_ENABLE(static-nss, dnl |
| [ --enable-static-nss build static NSS modules [default=no]], |
| static_nss=$enableval, static_nss=no) |
| if test x"$static_nss" = xyes; then |
| AC_DEFINE(DO_STATIC_NSS) |
| fi |
| |
| AC_ARG_ENABLE(force-install, |
| [ --disable-force-install don't force installation of files from this package, |
| even if they are older than the installed files], |
| force_install=$enableval, force_install=yes) |
| AC_SUBST(force_install) |
| |
| AC_CANONICAL_HOST |
| |
| # The way shlib-versions is used to generate soversions.mk uses a |
| # fairly simplistic model for name recognition that can't distinguish |
| # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os |
| # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can |
| # tell. This doesn't get used much beyond that, so it's fairly safe. |
| case "$host_os" in |
| linux*) |
| ;; |
| gnu*) |
| host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` |
| ;; |
| esac |
| |
| # We keep the original values in `$config_*' and never modify them, so we |
| # can write them unchanged into config.make. Everything else uses |
| # $machine, $vendor, and $os, and changes them whenever convenient. |
| config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os |
| |
| # Some configurations imply other options. |
| case "$host_os" in |
| gnu* | linux* | bsd4.4* | netbsd* | freebsd*) |
| # These systems always use GNU tools. |
| gnu_ld=yes gnu_as=yes ;; |
| esac |
| case "$host_os" in |
| # i586-linuxaout is mangled into i586-pc-linux-gnuaout |
| linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) |
| ;; |
| gnu* | linux* | sysv4* | solaris2* | irix6*) |
| # These systems (almost) always use the ELF format. |
| elf=yes |
| ;; |
| esac |
| |
| machine=$config_machine |
| vendor=$config_vendor |
| os=$config_os |
| |
| ### |
| ### I put this here to prevent those annoying emails from people who cannot |
| ### read and try to compile glibc on unsupported platforms. --drepper |
| ### |
| ### By using the undocumented --enable-hacker-mode option for configure |
| ### one can skip this test to make the configuration not fail for unsupported |
| ### platforms. |
| ### |
| if test -z "$enable_hacker_mode"; then |
| case "$machine-$host_os" in |
| *-linux* | *-gnu* | arm*-none*) |
| ;; |
| *) |
| echo "*** The GNU C library is currently not available for this platform." |
| echo "*** So far nobody cared to port it and if there is no volunteer it" |
| echo "*** might never happen. So, if you have interest to see glibc on" |
| echo "*** this platform visit" |
| echo "*** http://www.gnu.org/software/libc/porting.html" |
| echo "*** and join the group of porters" |
| exit 1 |
| ;; |
| esac |
| fi |
| |
| dnl We need to use [ and ] for other purposes for a while now. |
| changequote(,)dnl |
| # Expand the configuration machine name into a subdirectory by architecture |
| # type and particular chip. |
| case "$machine" in |
| a29k | am29000) base_machine=a29k machine=a29k ;; |
| alpha*) base_machine=alpha machine=alpha/$machine ;; |
| arm*) base_machine=arm machine=arm/$machine ;; |
| c3[012]) base_machine=cx0 machine=cx0/c30 ;; |
| c4[04]) base_machine=cx0 machine=cx0/c40 ;; |
| hppa*) base_machine=hppa machine=hppa/$machine ;; |
| i[3456]86) base_machine=i386 machine=i386/$machine ;; |
| m680?0) base_machine=m68k machine=m68k/$machine ;; |
| m68k) base_machine=m68k machine=m68k/m68020 ;; |
| m88???) base_machine=m88k machine=m88k/$machine ;; |
| m88k) base_machine=m88k machine=m88k/m88100 ;; |
| mips64*) base_machine=mips64 machine=mips/mips64/$machine ;; |
| mips*) base_machine=mips |
| case "`uname -m`" in |
| IP22) machine=mips/mips3 ;; |
| *) machine=mips/$machine ,, |
| esac ;; |
| sparc | sparcv[67]) |
| base_machine=sparc machine=sparc/sparc32 ;; |
| sparcv8 | supersparc | hypersparc) |
| base_machine=sparc machine=sparc/sparc32/sparcv8 ;; |
| sparc64 | ultrasparc) |
| base_machine=sparc machine=sparc/sparc64 ;; |
| esac |
| changequote([,])dnl |
| AC_SUBST(base_machine) |
| |
| if test "$base_machine" = "i386"; then |
| AC_DEFINE(USE_REGPARMS) |
| fi |
| |
| # Compute the list of sysdep directories for this configuration. |
| # This can take a while to compute. |
| sysdep_dir=$srcdir/sysdeps |
| AC_MSG_CHECKING(sysdep dirs) |
| dnl We need to use [ and ] for other purposes for a while now. |
| changequote(,)dnl |
| # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
| os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" |
| |
| case "$os" in |
| gnu*) |
| base_os=mach/hurd ;; |
| netbsd* | 386bsd* | freebsd* | bsdi*) |
| base_os=unix/bsd/bsd4.4 ;; |
| osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
| base_os=unix/bsd ;; |
| sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
| base_os=unix/sysv ;; |
| irix6*) |
| base_os=unix/sysv/irix6/$os ;; |
| solaris[2-9]*) |
| base_os=unix/sysv/sysv4 ;; |
| none) |
| base_os=standalone ;; |
| *) |
| base_os='' ;; |
| esac |
| |
| # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. |
| tail=$os |
| ostry=$os |
| while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do |
| ostry="$ostry /$o" |
| tail=$o |
| done |
| o=`echo $tail | sed 's/[0-9]*$//'` |
| if test $o != $tail; then |
| ostry="$ostry /$o" |
| fi |
| # For linux-gnu, try linux-gnu, then linux. |
| o=`echo $tail | sed 's/-.*$//'` |
| if test $o != $tail; then |
| ostry="$ostry /$o" |
| fi |
| |
| # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. |
| base= |
| tail=$base_os |
| while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do |
| set $b |
| base="$base /$1" |
| tail="$2" |
| done |
| |
| # For sparc/sparc9, try sparc/sparc9 and then sparc. |
| mach= |
| tail=$machine |
| while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
| set $m |
| # Prepend the machine's FPU directory unless --without-fp. |
| if test "$with_fp" = yes; then |
| mach="$mach /$1/fpu" |
| fi |
| mach="$mach /$1" |
| tail="$2" |
| done |
| |
| dnl We are done with glob and regexp uses of [ and ]; return to autoconf. |
| changequote([,])dnl |
| |
| # Find what sysdep directories exist. |
| sysnames= |
| IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" |
| for d in $add_ons_pfx ''; do |
| for b in $base ''; do |
| for m0 in $mach ''; do |
| for v in /$vendor ''; do |
| test "$v" = / && continue |
| for o in /$ostry ''; do |
| test "$o" = / && continue |
| for m in $mach ''; do |
| if test "$m0$b$v$o$m"; then |
| try="${d}sysdeps$m0$b$v$o$m" |
| test -n "$enable_debug_configure" && |
| echo "$0 [DEBUG]: try $try" >&2 |
| case $try in |
| /*) dest=$try ;; |
| *) dest=$srcdir/$try ;; |
| esac |
| if test -d $dest; then |
| sysnames="$sysnames $try" |
| { test -n "$o" || test -n "$b"; } && os_used=t |
| { test -n "$m" || test -n "$m0"; } && machine_used=t |
| fi |
| fi |
| done |
| done |
| done |
| done |
| done |
| done |
| IFS="$ac_save_ifs" |
| |
| if test -z "$os_used" && test "$os" != none; then |
| AC_MSG_ERROR(Operating system $os is not supported.) |
| fi |
| if test -z "$machine_used" && test "$machine" != none; then |
| AC_MSG_ERROR(The $machine is not supported.) |
| fi |
| |
| # We have now validated the configuration. |
| |
| |
| # If using ELF, look for an `elf' subdirectory of each machine directory. |
| # We prepend these rather than inserting them whereever the machine appears |
| # because things specified by the machine's ELF ABI should override |
| # OS-specific things, and should always be the same for any OS on the |
| # machine (otherwise what's the point of an ABI?). |
| if test "$elf" = yes; then |
| elf_dirs= |
| for d in $add_ons_pfx ''; do |
| case $d in |
| /*) xsrcdir= ;; |
| *) xsrcdir=$srcdir/ ;; |
| esac |
| for m in $mach; do |
| if test -d $xsrcdir${d}sysdeps$m/elf; then |
| elf_dirs="$elf_dirs ${d}sysdeps$m/elf" |
| fi |
| done |
| done |
| sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" |
| fi |
| |
| |
| # Expand the list of system names into a full list of directories |
| # from each element's parent name and Implies file (if present). |
| set $sysnames |
| names= |
| while test $# -gt 0; do |
| name=$1 |
| shift |
| |
| case " $names " in *" $name "*) |
| # Already in the list. |
| continue |
| esac |
| |
| # Report each name as we discover it, so there is no long pause in output. |
| echo $ac_n "$name $ac_c" >&AC_FD_MSG |
| |
| name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
| |
| case $name in |
| /*) xsrcdir= ;; |
| *) xsrcdir=$srcdir/ ;; |
| esac |
| test -n "$enable_debug_configure" && |
| echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 |
| |
| if test -f $xsrcdir$name/Implies; then |
| # Collect more names from the `Implies' file (removing comments). |
| implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
| implied= |
| for x in $implied_candidate; do |
| if test -d $xsrcdir$name_base/$x; then |
| implied="$implied $name_base/$x"; |
| else |
| AC_MSG_WARN($name/Implies specifies nonexistent $x) |
| fi |
| done |
| else |
| implied= |
| fi |
| |
| # Add NAME to the list of names. |
| names="$names $name" |
| |
| # Find the parent of NAME, using the empty string if it has none. |
| changequote(,)dnl |
| parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
| changequote([,])dnl |
| |
| # Add the names implied by NAME, and NAME's parent (if it has one), to |
| # the list of names to be processed (the argument list). We prepend the |
| # implied names to the list and append the parent. We want implied |
| # directories to come before further directories inferred from the |
| # configuration components; this ensures that for sysv4, unix/common |
| # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) |
| # after sysv4). |
| sysnames="`echo $implied $* $parent`" |
| test -n "$sysnames" && set $sysnames |
| done |
| |
| # Add the default directories. |
| default_sysnames=sysdeps/generic |
| if test "$elf" = yes; then |
| default_sysnames="sysdeps/generic/elf $default_sysnames" |
| fi |
| sysnames="$names $default_sysnames" |
| AC_SUBST(sysnames) |
| # The other names were emitted during the scan. |
| AC_MSG_RESULT($default_sysnames) |
| |
| |
| ### Locate tools. |
| |
| AC_PROG_INSTALL |
| if test "$INSTALL" = "${srcdir}/install-sh -c"; then |
| # The makefiles need to use a different form to find it in $srcdir. |
| INSTALL='\$(..)./install-sh -c' |
| fi |
| AC_PROG_LN_S |
| |
| # These programs are version sensitive. |
| AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl |
| AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, |
| [version \([egcstp-]*[0-9.]*\)], |
| [egcs-2.9[1-9].*|egcs-2.90.2[789]|egcs-2.90.[3-9][0-9]|pgcc-2.9[1-9].*|pgcc-2.90.2[789]|pgcc-2.90.[3-9][0-9]|*2.8.[1-9]*|*2.9|*2.9.[0-9]*], |
| critic_missing=t) |
| AC_CHECK_PROG_VER(MAKE, make gmake, --version, |
| [version \([0-9][0-9.]*\), by], |
| [3.75 | 3.76.[1-9]* | 3.7[789]* | 3.[89]*], critic_missing=t) |
| |
| AC_CHECK_PROG_VER(MSGFMT, msgfmt gmsgfmt, --version, |
| [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
| [0.[1-9][0-9].* | [1-9].*], MSGFMT=: aux_missing=t) |
| AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
| [GNU texinfo \([0-9][0-9.]*\)], |
| [3.1[1-9] | 3.[2-9][0-9]], MAKEINFO=: aux_missing=t) |
| |
| if test -n "$critic_missing"; then |
| AC_MSG_ERROR([ |
| *** Some critical program is missing or too old. |
| *** Check the INSTALL file for required versions.]) |
| fi |
| |
| test -n "$aux_missing" && AC_MSG_WARN([ |
| *** An auxiliary program is missing or too old; |
| *** some features will be disabled. |
| *** Check the INSTALL file for required versions.]) |
| |
| AC_PROG_CC_LOCAL |
| AC_CANONICAL_BUILD |
| if test $host != $build; then |
| AC_CHECK_PROGS(BUILD_CC, gcc cc) |
| fi |
| AC_SUBST(cross_compiling) |
| AC_PROG_CPP |
| LIBC_PROG_BINUTILS |
| AC_CHECK_TOOL(AR, ar) |
| AC_CHECK_TOOL(RANLIB, ranlib, :) |
| AC_CHECK_TOOL(MIG, mig) |
| |
| # if using special system headers, find out the compiler's sekrit |
| # header directory and add that to the list. NOTE: Only does the right |
| # thing on a system that doesn't need fixincludes. (Not presently a problem.) |
| if test -n "$sysheaders"; then |
| ccheaders=`$CC -print-file-name=include` |
| SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders" |
| fi |
| AC_SUBST(SYSINCLUDES) |
| |
| # check if ranlib is necessary |
| AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl |
| cat > conftest.c <<EOF |
| int a; |
| char b; |
| void c(void) {} |
| EOF |
| $CC $CFLAGS -c conftest.c |
| $AR cr conftest.a conftest.c |
| cp conftest.a conftest2.a |
| $RANLIB conftest.a |
| if cmp -s conftest.a conftest2.a; then |
| libc_cv_ranlib_necessary=no |
| else |
| libc_cv_ranlib_necessary=yes |
| fi |
| rm -rf conftest*]) |
| if test "$libc_cv_ranlib_necessary" = no; then |
| RANLIB=: |
| fi |
| |
| # Test if LD_LIBRARY_PATH contains the notation for the current directory |
| # since this would lead to problems installing/building glibc. |
| # LD_LIBRARY_PATH contains the current directory if one of the following |
| # is true: |
| # - one of the terminals (":" and ";") is the first or last sign |
| # - two terminals occur directly after each other |
| # - the path contains an element with a dot in it |
| AC_MSG_CHECKING(LD_LIBRARY_PATH variable) |
| changequote(,)dnl |
| case ${LD_LIBRARY_PATH} in |
| [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) |
| ld_library_path_setting="contains current directory" |
| ;; |
| *) |
| ld_library_path_setting="ok" |
| ;; |
| esac |
| changequote([,])dnl |
| AC_MSG_RESULT($ld_library_path_setting) |
| if test "$ld_library_path_setting" != "ok"; then |
| AC_MSG_ERROR([ |
| *** LD_LIBRARY_PATH shouldn't contain the current directory when |
| *** building glibc. Please change the environment variable |
| *** and run configure again.]) |
| fi |
| |
| AC_PATH_PROG(BASH, bash, no) |
| if test "$BASH" != no && |
| $BASH -c 'test "$BASH_VERSINFO" \ |
| && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
| libc_cv_have_bash2=yes |
| else |
| libc_cv_have_bash2=no |
| fi |
| AC_SUBST(libc_cv_have_bash2) |
| |
| dnl We need a ksh compatible shell for tzselect. |
| if test "$BASH" = no; then |
| AC_PATH_PROG(KSH, ksh, no) |
| if test "$KSH" = no; then |
| libc_cv_have_ksh=no |
| else |
| libc_cv_have_ksh=yes |
| fi |
| else |
| KSH="$BASH" |
| AC_SUBST(KSH) |
| libc_cv_have_ksh=yes |
| fi |
| AC_SUBST(libc_cv_have_ksh) |
| |
| AC_PROG_AWK |
| AC_PATH_PROGS(PERL, perl, no) |
| AC_SUBST(PERL) |
| |
| AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
| echo '#include <stddef.h> |
| FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c |
| if eval "$ac_cpp conftest.c 2>/dev/null" \ |
| | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then |
| libc_cv_signed_size_t=no |
| else |
| libc_cv_signed_size_t=yes |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_signed_size_t = yes; then |
| dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. |
| cat >> confdefs.h <<\EOF |
| #undef __SIZE_TYPE__ |
| #define __SIZE_TYPE__ unsigned |
| EOF |
| fi |
| |
| AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
| AC_TRY_COMPILE(dnl |
| [#define __need_size_t |
| #define __need_wchar_t |
| #include <stddef.h> |
| #define __need_NULL |
| #include <stddef.h>], [size_t size; wchar_t wchar; |
| #ifdef offsetof |
| #error stddef.h ignored __need_* |
| #endif |
| if (&size == NULL || &wchar == NULL) abort ();], |
| libc_cv_friendly_stddef=yes, |
| libc_cv_friendly_stddef=no)]) |
| if test $libc_cv_friendly_stddef = yes; then |
| config_vars="$config_vars |
| override stddef.h = # The installed <stddef.h> seems to be libc-friendly." |
| fi |
| |
| AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
| libc_cv_need_minus_P, [dnl |
| cat > conftest.S <<EOF |
| #include "confdefs.h" |
| /* Nothing whatsoever. */ |
| EOF |
| if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then |
| libc_cv_need_minus_P=no |
| else |
| libc_cv_need_minus_P=yes |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_need_minus_P = yes; then |
| config_vars="$config_vars |
| asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." |
| fi |
| |
| AC_CACHE_CHECK(for assembler global-symbol directive, |
| libc_cv_asm_global_directive, [dnl |
| libc_cv_asm_global_directive=UNKNOWN |
| for ac_globl in .globl .global; do |
| cat > conftest.s <<EOF |
| .text |
| ${ac_globl} foo |
| foo: |
| EOF |
| if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then |
| libc_cv_asm_global_directive=${ac_globl} |
| fi |
| rm -f conftest* |
| test $libc_cv_asm_global_directive != UNKNOWN && break |
| done]) |
| if test $libc_cv_asm_global_directive = UNKNOWN; then |
| AC_MSG_ERROR(cannot determine asm global directive) |
| else |
| AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) |
| fi |
| |
| AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
| cat > conftest.s <<EOF |
| .text |
| foo: |
| .set glibc_conftest_frobozz,foo |
| $libc_cv_asm_global_directive glibc_conftest_frobozz |
| EOF |
| # The alpha-dec-osf1 assembler gives only a warning for `.set' |
| # (but it doesn't work), so we must do a linking check to be sure. |
| cat > conftest1.c <<\EOF |
| extern int glibc_conftest_frobozz; |
| main () { printf ("%d\n", glibc_conftest_frobozz); } |
| EOF |
| if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ |
| -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
| libc_cv_asm_set_directive=yes |
| else |
| libc_cv_asm_set_directive=no |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_asm_set_directive = yes; then |
| AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) |
| fi |
| |
| AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
| [cat > conftest.s <<EOF |
| .text |
| _sym: |
| .symver _sym,sym@VERS |
| EOF |
| if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then |
| libc_cv_asm_symver_directive=yes |
| else |
| libc_cv_asm_symver_directive=no |
| fi |
| rm -f conftest*]) |
| AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl |
| if test $libc_cv_asm_symver_directive = yes; then |
| cat > conftest.s <<EOF |
| .text |
| _sym: |
| .symver _sym,sym@VERS |
| EOF |
| cat > conftest.map <<EOF |
| VERS_1 { |
| global: sym; |
| }; |
| |
| VERS_2 { |
| global: sym; |
| } VERS_1; |
| EOF |
| if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then |
| if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o |
| -nostartfiles -nostdlib |
| -Wl,--version-script,conftest.map |
| 1>&AC_FD_CC]); |
| then |
| libc_cv_ld_version_script_option=yes |
| else |
| libc_cv_ld_version_script_option=no |
| fi |
| else |
| libc_cv_ld_version_script_option=no |
| fi |
| else |
| libc_cv_ld_version_script_option=no |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_asm_symver_directive = yes && |
| test $libc_cv_ld_version_script_option = yes && |
| test $enable_versioning = yes; then |
| VERSIONING=yes |
| AC_DEFINE(DO_VERSIONING) |
| else |
| VERSIONING=no |
| fi |
| AC_SUBST(VERSIONING) |
| |
| if test $VERSIONING = no; then |
| echo "\ |
| *** WARNING: You should not compile GNU libc without versioning. Not using |
| *** versioning will introduce incompatibilities so that old binaries |
| *** will not run anymore. |
| *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
| fi |
| if test $elf = yes; then |
| AC_CACHE_CHECK(for .previous assembler directive, |
| libc_cv_asm_previous_directive, [dnl |
| cat > conftest.s <<EOF |
| .section foo_section |
| .previous |
| EOF |
| if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then |
| libc_cv_asm_previous_directive=yes |
| else |
| libc_cv_asm_previous_directive=no |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_asm_previous_directive = yes; then |
| AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) |
| else |
| AC_CACHE_CHECK(for .popsection assembler directive, |
| libc_cv_asm_popsection_directive, [dnl |
| cat > conftest.s <<EOF |
| .pushsection foo_section |
| .popsection |
| EOF |
| if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then |
| libc_cv_asm_popsection_directive=yes |
| else |
| libc_cv_asm_popsection_directive=no |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_asm_popsection_directive = yes; then |
| AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) |
| fi |
| fi |
| fi |
| |
| if test $elf != yes; then |
| AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, |
| [AC_TRY_COMPILE(, [asm (".section .init"); |
| asm (".section .fini"); |
| asm (".text");], |
| libc_cv_have_initfini=yes, |
| libc_cv_have_initfini=no)]) |
| AC_SUBST(libc_cv_have_initfini)dnl |
| if test $libc_cv_have_initfini = yes; then |
| AC_DEFINE(HAVE_INITFINI) |
| fi |
| fi |
| |
| dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) |
| AC_DEFUN(AC_CHECK_ASM_UNDERSCORE, |
| [cat > conftest.$ac_ext <<EOF |
| dnl This sometimes fails to find confdefs.h, for some reason. |
| dnl [#]line __oline__ "[$]0" |
| [#]line __oline__ "configure" |
| #include "confdefs.h" |
| void underscore_test(void) { |
| return; } |
| EOF |
| if AC_TRY_EVAL(ac_compile); then |
| if grep _underscore_test conftest* >/dev/null; then |
| ifelse([$1], , :, [rm -f conftest* |
| $1]) |
| else |
| ifelse([$2], , , [rm -f conftest* |
| $2]) |
| fi |
| else |
| echo "configure: failed program was:" >&AC_FD_CC |
| cat conftest.$ac_ext >&AC_FD_CC |
| ifelse([$2], , , [rm -f conftest* |
| $2]) |
| fi |
| rm -f conftest*]) |
| |
| if test $elf = yes; then |
| libc_cv_asm_underscores=no |
| else |
| if test $ac_cv_prog_cc_works = yes; then |
| AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, |
| [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], |
| libc_cv_asm_underscores=yes, |
| libc_cv_asm_underscores=no)]) |
| else |
| AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, |
| [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes, |
| libc_cv_asm_underscores=no)]) |
| fi |
| fi |
| if test $libc_cv_asm_underscores = no; then |
| AC_DEFINE(NO_UNDERSCORES) |
| fi |
| |
| if test $elf = yes; then |
| libc_cv_weak_symbols=yes |
| fi |
| |
| AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, |
| [dnl |
| cat > conftest.s <<EOF |
| .text |
| ${libc_cv_asm_global_directive} foo |
| foo: |
| .weak foo |
| .weak bar; bar = foo |
| EOF |
| if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then |
| libc_cv_asm_weak_directive=yes |
| else |
| libc_cv_asm_weak_directive=no |
| fi |
| rm -f conftest*]) |
| |
| if test $libc_cv_asm_weak_directive = no; then |
| AC_CACHE_CHECK(for assembler .weakext directive, |
| libc_cv_asm_weakext_directive, |
| [dnl |
| cat > conftest.s <<EOF |
| .text |
| ${libc_cv_asm_global_directive} foo |
| foo: |
| .weakext bar foo |
| .weakext baz |
| ${libc_cv_asm_global_directive} baz |
| baz: |
| EOF |
| if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then |
| libc_cv_asm_weakext_directive=yes |
| else |
| libc_cv_asm_weakext_directive=no |
| fi |
| rm -f conftest*]) |
| |
| fi # no .weak |
| |
| if test $libc_cv_asm_weak_directive = yes; then |
| AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
| elif test $libc_cv_asm_weakext_directive = yes; then |
| AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
| fi |
| |
| AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
| cat > conftest.c <<\EOF |
| _start () {} |
| int __eh_pc; |
| __throw () {} |
| EOF |
| dnl No \ in command here because it ends up inside ''. |
| if AC_TRY_COMMAND([${CC-cc} $CFLAGS |
| -nostdlib -nostartfiles -Wl,--no-whole-archive |
| -o conftest conftest.c 1>&AC_FD_CC]); then |
| libc_cv_ld_no_whole_archive=yes |
| else |
| libc_cv_ld_no_whole_archive=no |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_ld_no_whole_archive = yes; then |
| no_whole_archive=-Wl,--no-whole-archive |
| fi |
| AC_SUBST(no_whole_archive)dnl |
| |
| AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
| cat > conftest.c <<\EOF |
| _start () {} |
| int __eh_pc; |
| __throw () {} |
| EOF |
| dnl No \ in command here because it ends up inside ''. |
| if AC_TRY_COMMAND([${CC-cc} $CFLAGS |
| -nostdlib -nostartfiles -fexceptions |
| -o conftest conftest.c 1>&AC_FD_CC]); then |
| libc_cv_gcc_exceptions=yes |
| else |
| libc_cv_gcc_exceptions=no |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_gcc_exceptions = yes; then |
| exceptions=-fexceptions |
| fi |
| AC_SUBST(exceptions)dnl |
| |
| if test "$base_machine" = alpha ; then |
| AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl |
| cat > conftest.c <<\EOF |
| foo () { } |
| EOF |
| dnl |
| if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]); |
| then |
| libc_cv_gcc_alpha_ng_prefix=yes |
| else |
| libc_cv_gcc_alpha_ng_prefix=no |
| fi |
| rm -f conftest* ]) |
| if test $libc_cv_gcc_alpha_ng_prefix = yes ; then |
| AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$") |
| else |
| AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "") |
| fi |
| fi |
| |
| if test "$host_cpu" = powerpc ; then |
| # Check for a bug present in at least versions 2.8.x of GCC |
| # and versions 1.0.x of EGCS. |
| AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl |
| AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, |
| libc_cv_c_asmcr0_bug='no', |
| libc_cv_c_asmcr0_bug='yes')]) |
| if test "$libc_cv_c_asmcr0_bug" != 'no'; then |
| AC_DEFINE(BROKEN_PPC_ASM_CR0) |
| fi |
| fi |
| |
| AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, |
| [cat > conftest.c <<EOF |
| #line __oline__ "configure" |
| static char __EH_FRAME_BEGIN__[]; |
| _start () |
| { |
| #ifdef CHECK__register_frame |
| __register_frame (__EH_FRAME_BEGIN__); |
| __deregister_frame (__EH_FRAME_BEGIN__); |
| #endif |
| #ifdef CHECK__register_frame_info |
| __register_frame_info (__EH_FRAME_BEGIN__); |
| __deregister_frame_info (__EH_FRAME_BEGIN__); |
| #endif |
| } |
| int __eh_pc; |
| __throw () {} |
| /* FIXME: this is fragile. */ |
| malloc () {} |
| strcmp () {} |
| strlen () {} |
| memcpy () {} |
| memset () {} |
| free () {} |
| abort () {} |
| __bzero () {} |
| EOF |
| dnl No \ in command here because it ends up inside ''. |
| if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info |
| -nostdlib -nostartfiles |
| -o conftest conftest.c -lgcc >&AC_FD_CC]); then |
| libc_cv_gcc_dwarf2_unwind_info=static |
| else |
| libc_cv_gcc_dwarf2_unwind_info=no |
| fi |
| if test $libc_cv_gcc_dwarf2_unwind_info = no; then |
| if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame |
| -nostdlib -nostartfiles |
| -o conftest conftest.c -lgcc >&AC_FD_CC]); then |
| libc_cv_gcc_dwarf2_unwind_info=yes |
| else |
| libc_cv_gcc_dwarf2_unwind_info=no |
| fi |
| fi |
| rm -f conftest*]) |
| case $libc_cv_gcc_dwarf2_unwind_info in |
| yes) |
| AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) |
| ;; |
| static) |
| AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) |
| AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) |
| ;; |
| esac |
| |
| ### End of automated tests. |
| ### Now run sysdeps configure fragments. |
| |
| # sysdeps configure fragments may set these with files to be linked below. |
| libc_link_dests= |
| libc_link_sources= |
| |
| # They also can set these variables. |
| ldd_rewrite_script=no |
| |
| # Iterate over all the sysdep directories we will use, running their |
| # configure fragments, and looking for a uname implementation. |
| uname= |
| for dir in $sysnames; do |
| case $dir in |
| /*) dest=$dir ;; |
| *) dest=$srcdir/$dir ;; |
| esac |
| if test -r $dest/configure; then |
| AC_MSG_RESULT(running configure fragment for $dest) |
| . $dest/configure |
| fi |
| [ |
| if test -z "$uname"; then |
| if test -r $dest/uname.c || |
| test -r $dest/uname.S || |
| { test -r $dest/syscalls.list && |
| grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then |
| uname=$dir |
| fi |
| fi |
| ]dnl |
| done |
| |
| AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) |
| |
| # If we will use the generic uname implementation, we must figure out what |
| # it will say by examining the system, and write the results in config-name.h. |
| if test "$uname" = "sysdeps/generic"; then |
| |
| changequote(,)dnl |
| uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` |
| changequote([,])dnl |
| if test $uname_sysname != $config_os; then |
| config_release=`echo $config_os | sed s/$uname_sysname//` |
| fi |
| dnl |
| AC_DEFUN(LIBC_KERNEL_ID, [dnl |
| if test -r /vmunix; then |
| kernel_id=`strings /vmunix | grep UNIX` |
| elif test -r /dynix; then |
| kernel_id=`strings /dynix | grep DYNIX` |
| else |
| kernel_id= |
| fi |
| ])dnl |
| |
| AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
| AC_REQUIRE([LIBC_KERNEL_ID])dnl |
| changequote(,)dnl |
| kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` |
| changequote([,])dnl |
| if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ |
| != x$config_release; then |
| # The configuration release is a substring of the kernel release. |
| libc_cv_uname_release=$kernel_release |
| elif test x$config_release != x; then |
| libc_cv_uname_release=$config_release |
| elif test x$kernel_release != x; then |
| libc_cv_uname_release=$kernel_release |
| else |
| libc_cv_uname_release=unknown |
| fi]) |
| uname_release="$libc_cv_uname_release" |
| |
| AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
| AC_REQUIRE([LIBC_KERNEL_ID])dnl |
| changequote(,)dnl |
| kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` |
| changequote([,])dnl |
| if test -n "$kernel_version"; then |
| libc_cv_uname_version="$kernel_version" |
| else |
| libc_cv_uname_version=unknown |
| fi]) |
| uname_version="$libc_cv_uname_version" |
| |
| AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl |
| config_uname=config-name.h:config-name.in |
| else |
| # For non-generic uname, we don't need to create config-name.h at all. |
| config_uname= |
| fi |
| |
| AC_MSG_CHECKING(stdio selection) |
| AC_SUBST(stdio) |
| case $stdio in |
| libio) AC_DEFINE(USE_IN_LIBIO) ;; |
| default) stdio=stdio ;; |
| esac |
| AC_MSG_RESULT($stdio) |
| |
| # Test for old glibc 2.0.x headers so that they can be removed properly |
| # Search only in includedir. |
| AC_MSG_CHECKING(for old glibc 2.0.x headers) |
| if eval test -e "${includedir}/elfclass.h" -a -e "${includedir}/fcntlbits.h" |
| then |
| old_glibc_headers=yes |
| else |
| old_glibc_headers=no |
| fi |
| AC_MSG_RESULT($old_glibc_headers) |
| if test ${old_glibc_headers} = yes; then |
| AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) |
| AC_MSG_WARN(*** be removed.) |
| fi |
| AC_SUBST(old_glibc_headers) |
| |
| AC_SUBST(libc_cv_slibdir) |
| AC_SUBST(libc_cv_sysconfdir) |
| AC_SUBST(libc_cv_rootsbindir) |
| |
| AC_SUBST(has_ldconfig) |
| AC_SUBST(ldd_rewrite_script) |
| |
| AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) |
| if test $gnu_ld = yes; then |
| AC_DEFINE(HAVE_GNU_LD) |
| fi |
| if test $gnu_as = yes; then |
| AC_DEFINE(HAVE_GNU_AS) |
| fi |
| if test $elf = yes; then |
| AC_DEFINE(HAVE_ELF) |
| fi |
| |
| AC_SUBST(static) |
| AC_SUBST(shared) |
| if test $shared = default; then |
| if test $gnu_ld = yes; then |
| shared=$elf |
| else |
| # For now we do not assume shared libs are available. In future more |
| # tests might become available. |
| shared=no |
| fi |
| fi |
| |
| AC_CACHE_CHECK([whether -fPIC is default], pic_default, |
| [pic_default=yes |
| cat > conftest.c <<EOF |
| #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
| # error PIC is default. |
| #endif |
| EOF |
| if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then |
| pic_default=no |
| fi |
| rm -f conftest.*]) |
| AC_SUBST(pic_default) |
| |
| AC_SUBST(profile) |
| AC_SUBST(omitfp) |
| AC_SUBST(bounded) |
| AC_SUBST(static_nss) |
| AC_SUBST(nopic_initfini) |
| |
| AC_SUBST(DEFINES) |
| |
| case "$add_ons" in |
| *door*) linux_doors=yes ;; |
| *) linux_doors=no ;; |
| esac |
| AC_SUBST(linux_doors) |
| |
| if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
| config_makefile= |
| else |
| config_makefile=Makefile |
| fi |
| |
| VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
| RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` |
| AC_SUBST(VERSION) |
| AC_SUBST(RELEASE) |
| |
| AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [ |
| case $CONFIG_FILES in *config.make*) |
| echo "$config_vars" >> config.make;; |
| esac |
| test -d bits || mkdir bits], [config_vars='$config_vars']) |