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) # 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 $host_os | sed -e 's/gnu/gnu-gnu/'` ;; esac ### ### I put this here to prevent those annoying emails from people who cannot ### read and try to compile glibc on unsupported platforms. --drepper ### ### By using the undocumented --enable-hacker-mode option for configure ### one can skip this test to make the configuration not fail for unsupported ### platforms. ### if test -z "$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 # 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=$config_os dnl We need to use [ and ] for other purposes for a while now. changequote(,)dnl # Expand the configuration machine name into a subdirectory by architecture # type and particular chip. case "$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 $sysnames done # Add the default directories. sysnames="$names sysdeps/generic" AC_SUBST(sysnames) # The other names were emitted during the scan. AC_MSG_RESULT(sysdeps/generic) ### 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 \([egcst0-9.-]*\)], [egcs-2.91.*|egcs-2.90.2[789]|egcs-2.90.[3-9][0-9]|*2.8.[1-9]*|*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.*\([0-9][0-9]*\.[0-9]*\)], [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 ar takes S AC_CACHE_CHECK(for ar S, libc_cv_ar_S, [dnl tmpo=$$.o tmplib=lib$$.a rm -f $tmpo $tmplib touch $tmpo if AC_TRY_COMMAND([${AR-ar} rcuS $tmplib $tmpo > /dev/null 2>&1]); then libc_cv_ar_S=yes else libc_cv_ar_S=no fi rm -f $tmpo $tmplib]) AC_SUBST(libc_cv_ar_S)dnl # 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_PATH_PROGS(PERL, perl, no) AC_SUBST(PERL) 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_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 </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 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 $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-2.8.1.0.17 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 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 </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 $libc_cv_asm_weakext_directive = yes; then AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) fi AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl cat > conftest.c <<\EOF _start () {} int __eh_pc; __throw () {} EOF dnl No \ in command here because it ends up inside ''. if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles -Wl,--no-whole-archive -o conftest conftest.c 1>&AC_FD_CC]); then libc_cv_ld_no_whole_archive=yes else libc_cv_ld_no_whole_archive=no fi rm -f conftest*]) AC_SUBST(libc_cv_ld_no_whole_archive)dnl AC_CACHE_CHECK(for gcc -fno-exceptions, libc_cv_gcc_no_exceptions, [dnl cat > conftest.c <<\EOF _start () {} int __eh_pc; __throw () {} EOF dnl No \ in command here because it ends up inside ''. if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles -fno-exceptions -o conftest conftest.c 1>&AC_FD_CC]); then libc_cv_gcc_no_exceptions=yes else libc_cv_gcc_no_exceptions=no fi rm -f conftest*]) AC_SUBST(libc_cv_gcc_no_exceptions)dnl if test "$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 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 ### 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) AC_MSG_CHECKING(ldap selection) AC_SUBST(LDAP) case $add_ons in *ldap*) ldap=yes LDAP=ldap ;; *) ldap=no LDAP= ;; esac AC_MSG_RESULT($ldap) 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 dnl We must not allow compilation without static library on some platforms. if test $static = no && test $shared = yes; then case "$host_os" in linux* | gnu*) AC_MSG_ERROR([ *** You must compile with support for the static library since the shared *** library uses it. Restart configure without \`--disable-static'.]) ;; *) ;; esac 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) if test "`(cd $srcdir; pwd)`" = "`pwd`"; then config_makefile= else config_makefile=Makefile fi VERSION=`sed -e 's/^#define VERSION "\([^"]*\)"/\1/p' -e d < $srcdir/version.h` AC_SUBST(VERSION) AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, , [echo '$config_vars' >> config.make; test -d bits || mkdir bits])