dnl Process this file with autoconf to produce a configure script. AC_REVISION([$CVSid$]) AC_PREREQ(2.13)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 = $withval" ;; esac ]) # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. AC_ARG_WITH(gd, dnl --with-gd=DIR find libgd include dir and library with prefix DIR, [dnl case "$with_gd" in yes|''|no) ;; *) libgd_include="-I$withval/include" libgd_ldflags="-L$withval/lib" ;; esac ]) AC_ARG_WITH(gd-include, dnl --with-gd-include=DIR find libgd include files in DIR, [dnl case "$with_gd_include" in ''|no) ;; *) libgd_include="-I$withval" ;; esac ]) AC_ARG_WITH(gd-lib, dnl --with-gd-lib=DIR find libgd library files in DIR, [dnl case "$with_gd_lib" in ''|no) ;; *) libgd_ldflags="-L$withval" ;; esac ]) if test -n "$libgd_include"; then config_vars="$config_vars CFLAGS-memusagestat.c = $libgd_include" fi if test -n "$libgd_ldflags"; then config_vars="$config_vars libgd-LDFLAGS = $libgd_ldflags" fi dnl Arguments to specify presence of other packages/features. AC_ARG_WITH(fp, dnl [ --with-fp if using floating-point hardware [default=yes]], with_fp=$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(xcoff, dnl --with-xcoff if using the XCOFF object format, xcoff=$withval, xcoff=no) AC_ARG_WITH(cvs, dnl [ --without-cvs if CVS should not be used], with_cvs=$withval, with_cvs=yes) if test "$with_cvs" = yes; then if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null then with_cvs=no fi fi AC_SUBST(with_cvs) AC_ARG_WITH(headers, dnl [ --with-headers=PATH location of system headers to use [e.g. /usr/src/linux/include] [default=compiler default]], sysheaders=$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. dnl I've disabled this for now since we cannot build glibc without static dnl libraries built in the moment. dnl AC_ARG_ENABLE(static, dnl dnl [ --enable-static build static library [default=yes]], dnl static=$enableval, static=yes) static=yes AC_ARG_ENABLE(shared, dnl [ --enable-shared build shared library [default=yes if GNU ld & ELF]], shared=$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) AC_ARG_ENABLE(oldest-abi, dnl [ --enable-oldest-abi=ABI configure the oldest ABI supported [e.g. 2.2] [default=glibc default]], oldest_abi=$enableval, oldest_abi=no) if test "$oldest_abi" = yes || test "$oldest_abi" = no; then oldest_abi=default else AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") fi AC_SUBST(oldest_abi) 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) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'` test "$add_ons" = "*" && add_ons= ;; *) 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 $add_ons; do # Some sanity checks if test "$f" = "crypt"; then AC_MSG_ERROR([ *** It seems that you're using an old \`crypt' add-on. crypt is now *** part of glibc and using the old add-on will not work with this *** release. Start again with fresh sources and without the old *** \`crypt' add-on.]) fi if test "$f" = "localedata"; then AC_MSG_ERROR([ *** It seems that you're using an old \`localedata' add-on. localedata *** is now part of glibc and using the old add-on will not work with *** this release. 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AC_ARG_ENABLE(kernel, [ --enable-kernel=VERSION compile for compatibility with kernel not older than VERSION], minimum_kernel=$enableval) dnl Prevent unreasonable values. if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then # Better nothing than this. minimum_kernel="" else if test "$minimum_kernel" = current; then minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= fi fi dnl For the development we sometimes want gcc to issue even more warnings. dnl This is not the default since many of the extra warnings are not dnl appropriate. AC_ARG_ENABLE(all-warnings, [ --enable-all-warnings enable all useful warnings gcc can issue], all_warnings=$enableval) AC_SUBST(all_warnings) 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. 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Everything else uses # $machine, $vendor, and $os, and changes them whenever convenient. config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os # Don't allow vendor == "unknown" test "$config_vendor" = unknown && config_vendor= config_os="`echo $config_os | sed 's/^unknown-//'`" # Some configurations imply other options. case "$host_os" in gnu* | linux* | bsd4.4* | netbsd* | freebsd*) # These systems always use GNU tools. gnu_ld=yes gnu_as=yes ;; esac case "$host_os" in # i586-linuxaout is mangled into i586-pc-linux-gnuaout linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) ;; gnu* | linux* | sysv4* | solaris2* | irix6*) # These systems (almost) always use the ELF format. elf=yes ;; aix*) # These systems are always xcoff xcoff=yes elf=no ;; esac machine=$config_machine vendor=$config_vendor os=$config_os # config.guess on some IBM machines says `rs6000' instead of `powerpc'. # Unify this here. if test "$machine" = rs6000; then machine="powerpc" fi ### ### I put this here to prevent those annoying emails from people who cannot ### read and try to compile glibc on unsupported platforms. --drepper ### ### By using the undocumented --enable-hacker-mode option for configure ### one can skip this test to make the configuration not fail for unsupported ### platforms. ### if test -z "$enable_hacker_mode"; then case "$machine-$host_os" in *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*) ;; *) 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/arm32/$machine ;; c3[012]) base_machine=cx0 machine=cx0/c30 ;; c4[04]) base_machine=cx0 machine=cx0/c40 ;; hppa*64*) base_machine=hppa machine=hppa/hppa64 ;; hppa*) base_machine=hppa machine=hppa/hppa1.1 ;; i[3456]86) base_machine=i386 machine=i386/$machine ;; ia64) base_machine=ia64 machine=ia64 ;; 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 ;; s390) base_machine=s390 machine=s390/s390-32 ;; s390x) base_machine=s390 machine=s390/s390-64 ;; sh3*) base_machine=sh machine=sh/sh3 ;; sh4*) base_machine=sh machine=sh/sh4 ;; sparc | sparcv[67]) base_machine=sparc machine=sparc/sparc32 ;; sparcv8 | supersparc | hypersparc) base_machine=sparc machine=sparc/sparc32/sparcv8 ;; sparcv8plus | sparcv8plusa | sparcv9) base_machine=sparc machine=sparc/sparc32/sparcv9 ;; sparcv8plusb | sparcv9b) base_machine=sparc machine=sparc/sparc32/sparcv9b ;; sparc64 | ultrasparc) base_machine=sparc machine=sparc/sparc64 ;; sparc64b | ultrasparc3) base_machine=sparc machine=sparc/sparc64/sparcv9b ;; thumb*) base_machine=thumb machine=arm/thumb/$machine ;; esac changequote([,])dnl AC_SUBST(base_machine) if test "$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 ;; hpux*) base_os=unix/sysv/hpux/$os ;; aix4.3*) base_os=unix/sysv/aix/aix4.3 ;; none) base_os=standalone ;; *) base_os='' ;; esac # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. tail=$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="$2" done # For sparc/sparc32, try sparc/sparc32 and then sparc. mach= tail=$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 if test -d $srcdir/$try; 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 for m in $mach; do if test -d $srcdir/${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 found=no if test -d $xsrcdir$name_base/$x; then implied="$implied $name_base/$x"; found=yes fi for d in $add_ons_pfx ''; do try="${d}sysdeps/$x" case $d in /*) try_srcdir= ;; *) try_srcdir=$srcdir/ ;; esac test -n "$enable_debug_configure" && echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2 if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; then implied="$implied $try" found=yes fi done if test $found = no; then AC_MSG_WARN($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}/scripts/install-sh -c"; then # The makefiles need to use a different form to find it in $srcdir. INSTALL='\$(..)./scripts/install-sh -c' fi AC_PROG_LN_S # We need the physical current working directory. 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AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, [version \([egcygnustpi-]*[0-9.]*\)], [*gcc-2.9[5-9].*|*2.8.[1-9]*|*2.9|*2.9.[0-9]*|2.9[5-9]*|3.[0-9]*|cygnus-2.9[1-9]*|gcc-2.9[5-9]|gcc-2.1[0-9][0-9]|sgicc-*], critic_missing=gcc) AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, [GNU Make[^0-9]*\([0-9][0-9.]*\)], [3.79* | 3.[89]*], critic_missing="$critic_missing make") if test -n "$critic_missing"; then AC_MSG_ERROR([ *** These critical programs are missing or too old:$critic_missing *** Check the INSTALL file for required versions.]) fi AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, [GNU gettext.* \([0-9]*\.[0-9.]*\)], [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], MSGFMT=: aux_missing="$aux_missing msgfmt") AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, [GNU texinfo.* \([0-9][0-9.]*\)], [4.*], MAKEINFO=: aux_missing="$aux_missing makeinfo") AC_CHECK_PROG_VER(SED, gsed sed, --version, [GNU sed version \([0-9]*\.[0-9.]*\)], [3.0[2-9]*|3.[1-9]*|[4-9]*], SED=: aux_missing="$aux_missing sed") 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(MIG, mig) # Accept binutils 2.10.1 or newer (and also any ia64 2.9 version) # XXX Commented out because it filters out too many good versions. # XXX --drepper # AC_CHECK_PROG_VER(AS, $AS, --version, # [GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)], # [2.10.[1-9]* | 2.1[1-9]* | 2.9-ia64-*], AS=: critic_missing=t) test -n "$aux_missing" && AC_MSG_WARN([ *** These auxiliary programs are missing or too old:$aux_missing *** some features will be disabled. *** Check the INSTALL file for required versions.]) # glibcbug.in wants to know the compiler version. CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'` AC_SUBST(CCVERSION) case $CCVERSION in 3.*) gcc3=yes;; esac if test x"$gcc3" = xyes; then echo "\ *** This version of GNU libc cannot be compiled by GCC 3.x. *** GCC 3.x will generate a library that is binary incompatible to *** older and future releases of GNU libc. *** You should compile this GNU libc release by an older GCC version *** or wait for the next GNU libc release." if test $enable_sanity = yes; then echo "\ *** If you really mean to use GCC 3.x, run configure again *** using the extra parameter \`--disable-sanity-checks'." exit 1 else echo "\ *** This configuration is not supported by the GNU libc developers." fi fi # if using special system headers, find out the compiler's sekrit # header directory and add that to the list. NOTE: Only does the right # thing on a system that doesn't need fixincludes. (Not presently a problem.) if test -n "$sysheaders"; then ccheaders=`$CC -print-file-name=include` SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders" fi AC_SUBST(SYSINCLUDES) # check if ranlib is necessary AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl cat > conftest.c <&/dev/null'; then libc_cv_have_bash2=yes else libc_cv_have_bash2=no fi AC_SUBST(libc_cv_have_bash2) dnl We need a ksh compatible shell for tzselect. if test "$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_PROG(PERL, perl, no) if test "$PERL" != no && (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then PERL=no fi AC_PATH_PROG(INSTALL_INFO, install-info, no, $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) if test "$INSTALL_INFO" != "no"; then AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info, [mkdir conftest.d # There is a hard ^_ on the next line. I am open to better ideas. (echo '' echo 'File: dir Node: Top This is the top of the INFO tree' echo '* Menu:') >conftest.d/dir (echo 'INFO-DIR-SECTION i-d-s works' echo 'START-INFO-DIR-ENTRY' echo '* Prog: (prog). Program.' echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1 then if grep -s 'i-d-s works' conftest.d/dir >/dev/null then libc_cv_old_debian_install_info=no else libc_cv_old_debian_install_info=yes fi else libc_cv_old_debian_install_info=no testfailed=t fi rm -fr conftest.d]) if test -n "$testfailed" then AC_MSG_WARN([install-info errored out, check config.log]) fi OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info fi AC_SUBST(OLD_DEBIAN_INSTALL_INFO) AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl echo '#include FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c if eval "$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 #define __need_NULL #include ], [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 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 </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_MSG_CHECKING(whether .text pseudo-op must be used) AC_CACHE_VAL(libc_cv_dot_text, [dnl cat > conftest.s </dev/null; then libc_cv_dot_text=.text fi rm -f conftest*]) if test -z "$libc_cv_dot_text"; then AC_MSG_RESULT(no) else AC_MSG_RESULT(yes) fi AC_CACHE_CHECK(for assembler global-symbol directive, libc_cv_asm_global_directive, [dnl libc_cv_asm_global_directive=UNKNOWN for ac_globl in .globl .global .EXPORT; do cat > conftest.s </dev/null; then libc_cv_asm_global_directive=${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 < 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 $libc_cv_asm_set_directive = yes; then AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) fi # The Aix ld uses global .symbol_names instead of symbol_names. case "$os" in aix4.3*) AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME) esac AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, [cat > conftest.s <&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 $libc_cv_asm_symver_directive = yes; then cat > conftest.s < conftest.map <&AC_FD_CC 2>&AC_FD_CC; then if AC_TRY_COMMAND([${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 $shared != no && 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 $elf = yes && test $shared != no && 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 <&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 <&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 AC_CACHE_CHECK(for .protected and .hidden assembler directive, libc_cv_asm_protected_directive, [dnl cat > conftest.s <&AC_FD_CC); then libc_cv_asm_protected_directive=yes else libc_cv_asm_protected_directive=no fi rm -f conftest*]) AC_SUBST(libc_cv_asm_protected_directive) AC_CACHE_CHECK(for -z nodelete option, libc_cv_z_nodelete, [dnl cat > conftest.c <&AC_FD_CC]) then libc_cv_z_nodelete=yes else libc_cv_z_nodelete=no fi rm -f conftest*]) AC_SUBST(libc_cv_z_nodelete) AC_CACHE_CHECK(for -z nodlopen option, libc_cv_z_nodlopen, [dnl cat > conftest.c <&AC_FD_CC]) then libc_cv_z_nodlopen=yes else libc_cv_z_nodlopen=no fi rm -f conftest*]) AC_SUBST(libc_cv_z_nodlopen) AC_CACHE_CHECK(for -z initfirst option, libc_cv_z_initfirst, [dnl cat > conftest.c <&AC_FD_CC]) then libc_cv_z_initfirst=yes else libc_cv_z_initfirst=no fi rm -f conftest*]) AC_SUBST(libc_cv_z_initfirst) AC_CACHE_CHECK(for -Bgroup option, libc_cv_Bgroup, [dnl cat > conftest.c <&AC_FD_CC]) then libc_cv_Bgroup=yes else libc_cv_Bgroup=no fi rm -f conftest*]) AC_SUBST(libc_cv_Bgroup) AC_CACHE_CHECK(for -z combreloc, libc_cv_z_combreloc, [dnl cat > conftest.c <&AC_FD_CC]) then dnl The following test is a bit weak. We must use a tool which can test dnl cross-platform since the gcc used can be a cross compiler. Without dnl introducing new options this is not easily doable. Instead use a tool dnl which always is cross-platform: readelf. To detect whether -z combreloc dnl look for a section named .rel.dyn. if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then libc_cv_z_combreloc=yes else libc_cv_z_combreloc=no fi else libc_cv_z_combreloc=no fi rm -f conftest*]) if test "$libc_cv_z_combreloc" = yes; then AC_DEFINE(HAVE_Z_COMBRELOC) fi fi if test $elf != yes; then AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, [AC_TRY_COMPILE(, [asm (".section .init"); asm (".section .fini"); asm ("${libc_cv_dot_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 if test $elf = yes -a $gnu_ld = yes; then AC_CACHE_CHECK(whether cc puts quotes around section names, libc_cv_have_section_quotes, [cat > conftest.c </dev/null; then libc_cv_have_section_quotes=yes else libc_cv_have_section_quotes=no fi else libc_cv_have_section_quotes=unknown fi rm -f conftest.[cs] ]) if test $libc_cv_have_section_quotes = yes; then AC_DEFINE(HAVE_SECTION_QUOTES) fi fi dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) AC_DEFUN(AC_CHECK_ASM_UNDERSCORE, [cat > conftest.$ac_ext </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 </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 </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 $libc_cv_asm_weakext_directive = yes; then AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) fi dnl The standard hppa assembler uses `;' to start comments and `!' dnl as a line separator. CRIS uses `;' to start comments and `@' for dnl line separator. case "${host_cpu}-${host_os}" in cris*) libc_cv_asm_line_sep='@' AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) ;; hppa*linux*) AC_CACHE_CHECK(for assembler line separator, libc_cv_asm_line_sep, [dnl cat > conftest.s <&AC_FD_CC); then libc_cv_asm_line_sep='!' else if test -z "$enable_hacker_mode"; then echo "*** You need a newer assembler to compile glibc" rm -f conftest* exit 1 fi libc_cv_asm_line_sep=';' fi rm -f conftest*]) AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) ;; esac AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl cat > conftest.c <<\EOF _start () {} int __eh_pc; __throw () {} EOF dnl No \ in command here because it ends up inside ''. if AC_TRY_COMMAND([${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 <&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 $libc_cv_gcc_dwarf2_unwind_info in yes) AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) ;; static) AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) ;; esac dnl Check whether compiler understands __builtin_expect. AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect, [cat > conftest.c <&AC_FD_CC]); then libc_cv_gcc_builtin_expect=yes else libc_cv_gcc_builtin_expect=no fi rm -f conftest*]) if test "$libc_cv_gcc_builtin_expect" = yes; then AC_DEFINE(HAVE_BUILTIN_EXPECT) fi dnl Check whether the compiler supports subtraction of local labels. AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels, [cat > conftest.c <&AC_FD_CC]); then libc_cv_gcc_subtract_local_labels=yes else libc_cv_gcc_subtract_local_labels=no fi rm -f conftest*]) if test "$libc_cv_gcc_subtract_local_labels" = yes; then AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS) fi dnl Check whether we have the gd library available. AC_MSG_CHECKING(for libgd) if test "$with_gd" != "no"; then old_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $libgd_include" old_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS $libgd_ldflags" old_LIBS="$LIBS" LIBS="$LIBS -lgd -lpng -lz -lm" AC_TRY_LINK([#include ], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) CFLAGS="$old_CFLAGS" LDFLAGS="$old_LDFLAGS" LIBS="$old_LIBS" else LIBGD=no fi AC_MSG_RESULT($LIBGD) AC_SUBST(LIBGD) dnl check for the size of 'long double'. AC_CHECK_SIZEOF(long double, 0) sizeof_long_double=$ac_cv_sizeof_long_double AC_SUBST(sizeof_long_double) ### 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. use_ldconfig=no ldd_rewrite_script=no libc_cv_sysconfdir=$sysconfdir # 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 -f "${includedir}/elfclass.h" -a -f "${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_localedir) AC_SUBST(libc_cv_sysconfdir) AC_SUBST(libc_cv_rootsbindir) AC_SUBST(use_ldconfig) AC_SUBST(ldd_rewrite_script) AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) AC_SUBST(xcoff) 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 if test $xcoff = yes; then AC_DEFINE(HAVE_XCOFF) 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 <&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'])