mirror of
https://sourceware.org/git/glibc.git
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f0523145cc
parts of o-iterator-doit defns. (unversioned libraries install rule): Fix pattern. * mach/Makefile (mach-src-headers): Use $(base-machine) instead of $(config-machine). ($(includedir)/machine): Likewise. * config.make.in (base-machine): New variable. * configure.in (machine): Move case stmt to set $machine out of sysdep dirs AC_CACHE_CHECK. (base_machine): New variable, set in that switch and AC_SUBST'd. * Makerules (stub-$(subdir)): Use file name in directory as output, since cmd is cd'd.
614 lines
17 KiB
Plaintext
614 lines
17 KiB
Plaintext
Dnl Process this file with autoconf to produce a configure script.
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AC_REVISION([$CVSid$])
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AC_PREREQ(2.10)dnl dnl Minimum Autoconf version required.
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AC_INIT(features.h)
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AC_CONFIG_HEADER(config.h)
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# This will get text that should go into config.make.
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config_vars=
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# Check for a --with-gmp argument and set gmp-srcdir in config.make.
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AC_ARG_WITH(gmp, dnl
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--with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed),
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[dnl
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case "$with_gmp" in
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yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;;
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''|no) ;;
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*) config_vars="$config_vars
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gmp-srcdir = $withval" ;;
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esac
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])
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# Check for a --with-gettext argument and set gettext-srcdir in config.make.
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AC_ARG_WITH(gettext, dnl
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--with-gettext=DIR find GNU gettext source code in DIR (not needed),
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[dnl
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case "$with_gettext" in
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yes)
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AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;;
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''|no) ;;
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*)
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config_vars="$config_vars
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gettext-srcdir = $withval" ;;
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esac
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])
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dnl Arguments to specify presence of other packages/features.
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AC_ARG_WITH(fp, dnl
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--with-fp if using floating-point hardware,
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with_fp=$withval, with_fp=yes)
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AC_ARG_WITH(gnu-binutils, dnl
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--with-gnu-binutils if using GNU binutils (as and ld),
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gnu_binutils=$withval, gnu_binutils=no)
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AC_ARG_WITH(gnu-ld, dnl
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--with-gnu-ld if using GNU ld (in the binutils package),
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gnu_ld=$withval, gnu_ld=no)
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AC_ARG_WITH(gnu-as, dnl
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--with-gnu-as if using GNU as (in the binutils package),
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gnu_as=$withval, gnu_as=no)
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test $gnu_binutils = yes && gnu_as=yes gnu_ld=yes
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AC_ARG_WITH(elf, dnl
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--with-elf if using the ELF object format,
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elf=$withval, elf=no)
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AC_ARG_ENABLE(libio, dnl
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[ --enable-libio build in GNU libio instead of GNU stdio],
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[if test $enableval = yes; then
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stdio=libio
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else
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stdio=stdio
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fi],
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stdio=default)
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dnl Arguments to enable or disable building the shared, profiled, and
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dnl -fomit-frame-pointer libraries.
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AC_ARG_ENABLE(shared, dnl
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[ --enable-shared build shared library [default=yes if GNU ld & ELF]],
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shared=$enableval, shared=default)
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AC_ARG_ENABLE(profile, dnl
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[ --enable-profile build profiled library [default=yes]],
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profile=$enableval, profile=yes)
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AC_ARG_ENABLE(omitfp, dnl
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[ --enable-omitfp build undebuggable optimized library [default=no]],
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omitfp=$enableval, omitfp=no)
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AC_CANONICAL_HOST
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# We keep the original values in `$config_*' and never modify them, so we
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# can write them unchanged into config.make. Everything else uses
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# $machine, $vendor, and $os, and changes them whenever convenient.
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config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
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# Some configurations imply other options.
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case "$host_os" in
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gnu* | linux* | bsd4.4* | netbsd* | freebsd*)
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# These systems always use GNU tools.
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gnu_ld=yes gnu_as=yes ;;
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esac
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case "$host_os" in
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gnu* | linux* | sysv4* | solaris2*)
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# These systems always use the ELF format.
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elf=yes ;;
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esac
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# Linux/Alpha does not use ELF yet.
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case "$host_cpu-$host_os" in
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alpha*-linux*)
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gnu_ld=no elf=no ;;
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esac
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machine=$config_machine
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vendor=$config_vendor
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os=$config_os
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dnl We need to use [ and ] for other purposes for a while now.
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changequote(,)dnl
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# Expand the configuration machine name into a subdirectory by architecture
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# type and particular chip.
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case "$machine" in
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a29k | am29000) base_machine=a29k machine=a29k ;;
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alpha*) base_machine=alpha machine=alpha/$machine ;;
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hppa*) base_machine=hppa machine=hppa/$machine ;;
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i[345]86) base_machine=i386 machine=i386/$machine ;;
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m680?0) base_machine=m68k machine=m68k/$machine ;;
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m68k) base_machine=m68k machine=m68k/m68020 ;;
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m88???) base_machine=m88k machine=m88k/$machine ;;
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m88k) base_machine=m88k machine=m88k/m88100 ;;
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mips*) base_machine=mips machine=mips/$machine ;;
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mips64*) base_machine=mips64 machine=mips/mips64/$machine ;;
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sparc[6789]) base_machine=sparc machine=sparc/$machine ;;
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supersparc) base_machine=sparc machine=sparc/sparc8 ;;
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esac
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changequote([,])dnl
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AC_SUBST(base_machine)
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# Compute the list of sysdep directories for this configuration.
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sysdep_dir=$srcdir/sysdeps
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AC_CACHE_CHECK(sysdep dirs, libc_cv_sysdirs, [dnl
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dnl We need to use [ and ] for other purposes for a while now.
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changequote(,)dnl
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# Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
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os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
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case "$os" in
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gnu*)
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base_os=mach/hurd ;;
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netbsd* | 386bsd* | freebsd* | bsdi*)
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base_os=unix/bsd/bsd4.4 ;;
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osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
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base_os=unix/bsd ;;
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sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
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base_os=unix/sysv ;;
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solaris[2-9]*)
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base_os=unix/sysv/sysv4 ;;
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none)
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base_os=standalone ;;
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*)
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base_os='' ;;
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esac
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# For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
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tail=$os
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ostry=$os
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while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
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ostry="$ostry /$o"
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tail=$o
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done
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o=`echo $tail | sed 's/[0-9]*$//'`
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if test $o != $tail; then
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ostry="$ostry /$o"
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fi
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# For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
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base=
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tail=$base_os
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while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
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set $b
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base="$base /$1"
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tail="$2"
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done
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# For sparc/sparc9, try sparc/sparc9 and then sparc.
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mach=
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tail=$machine
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while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
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set $m
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# Prepend the machine's FPU directory unless --without-fp.
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if test "$with_fp" = yes; then
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mach="$mach /$1/fpu"
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fi
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mach="$mach /$1"
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tail="$2"
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done
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dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
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changequote([,])dnl
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# Find what sysdep directories exist.
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sysnames=
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for b in $base ''; do
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for m0 in $mach ''; do
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for v in /$vendor ''; do
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for o in /$ostry ''; do
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for m in $mach ''; do
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try="$m0$b$v$o$m"
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test -n "$enable_debug_configure" && echo "$0 [DEBUG]: try $try" >&2
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if test -d $sysdep_dir$try; then
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sysnames="$sysnames $try"
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{ test -n "$o" || test -n "$b"; } && os_used=t
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{ test -n "$m" || test -n "$m0"; } && machine_used=t
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fi
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done
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done
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done
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done
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done
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if test -z "$os_used" && test "$os" != none; then
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AC_MSG_ERROR(Operating system $os is not supported.)
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fi
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if test -z "$machine_used" && test "$machine" != none; then
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AC_MSG_ERROR(The $machine is not supported.)
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fi
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# We have now validated the configuration.
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# If using ELF, look for an `elf' subdirectory of each machine directory.
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# We prepend these rather than inserting them whereever the machine appears
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# because things specified by the machine's ELF ABI should override
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# OS-specific things, and should always be the same for any OS on the
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# machine (otherwise what's the point of an ABI?).
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if test "$elf" = yes; then
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elf_dirs=
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for m in $mach; do
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if test -d $sysdep_dir$m/elf; then
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elf_dirs="$elf_dirs $m/elf"
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fi
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done
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sysnames="`echo $elf_dirs | sed -e 's,^/,,' -e 's, /,,g'` $sysnames"
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fi
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# Remove the leading slashes.
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sysnames="`echo $sysnames | sed -e 's@^/@@' -e 's@ /@ @g'`"
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# Expand the list of system names into a full list of directories
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# from each element's parent name and Implies file (if present).
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set $sysnames
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while test $# -gt 0; do
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name=$1
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shift
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if test -f $sysdep_dir/$name/Implies; then
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# Collect more names from the `Implies' file (removing comments).
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implied="`sed 's/#.*$//' < $sysdep_dir/$name/Implies`"
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for x in $implied; do
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test -d $sysdep_dir/$x || echo "Warning: $name implies nonexistent $x">&2
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done
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else
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implied=
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fi
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# Add NAME to the list of names.
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names="$names $name"
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# Find the parent of NAME, using the empty string if it has none.
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changequote(,)dnl
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parent="`echo $name | sed -n -e '/\//!q' -e 's=/[^/]*$==p'`"
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changequote([,])dnl
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# Add the names implied by NAME, and NAME's parent (if it has one), to
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# the list of names to be processed (the argument list). We prepend the
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# implied names to the list and append the parent. We want implied
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# directories to come before further directories inferred from the
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# configuration components; this ensures that for sysv4, unix/common
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# (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
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# after sysv4).
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sysnames="`echo $implied $* $parent`"
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test -n "$sysnames" && set $sysnames
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done
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# Add the default directories.
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names="$names generic stub"
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# Now uniquize the list.
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seen=
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sysnames=
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for name in $names; do
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if echo "$seen" | fgrep -x $name >/dev/null; then
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# Already in the list.
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true;
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else
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# A new one.
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if test -z "$seen"; then
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seen="$name" sysnames="$name"
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else
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seen="$seen
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$name"
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sysnames="$sysnames $name"
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fi
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fi
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done
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libc_cv_sysdirs="$sysnames"])
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AC_SUBST(sysnames) sysnames="$libc_cv_sysdirs"
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AC_PROG_INSTALL
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if test "$INSTALL" = "${srcdir}/install-sh"; then
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# The makefiles need to use a different form to find it in $srcdir.
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INSTALL='$(..)./install-sh'
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fi
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AC_PROG_LN_S
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AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :)
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AC_CHECK_TOOL(CC, gcc)
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AC_CHECK_TOOL(AR, ar)
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AC_CHECK_TOOL(RANLIB, ranlib, :)
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AC_PROG_CPP
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AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
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echo '#include <stddef.h>
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FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
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if eval "$ac_cpp conftest.c 2>/dev/null" \
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| grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
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libc_cv_signed_size_t=no
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else
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libc_cv_signed_size_t=yes
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fi
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rm -f conftest*])
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if test $libc_cv_signed_size_t = yes; then
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dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
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cat >> confdefs.h <<\EOF
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#undef __SIZE_TYPE__
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#define __SIZE_TYPE__ unsigned
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EOF
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fi
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AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
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AC_TRY_COMPILE(dnl
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[#define __need_size_t
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#define __need_wchar_t
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#include <stddef.h>
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#define __need_NULL
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#include <stddef.h>], [size_t size; wchar_t wchar;
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#ifdef offsetof
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#error stddef.h ignored __need_*
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#endif
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if (&size == NULL || &wchar == NULL) abort ();],
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libc_cv_friendly_stddef=yes,
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libc_cv_friendly_stddef=no)])
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if test $libc_cv_friendly_stddef = yes; then
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config_vars="$config_vars
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override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
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fi
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AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
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libc_cv_need_minus_P, [dnl
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cat > conftest.S <<EOF
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#include "confdefs.h"
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/* Nothing whatsoever. */
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EOF
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if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
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libc_cv_need_minus_P=no
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else
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libc_cv_need_minus_P=yes
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fi
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rm -f conftest*])
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if test $libc_cv_need_minus_P = yes; then
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config_vars="$config_vars
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asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
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fi
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AC_CACHE_CHECK(for assembler global-symbol directive,
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libc_cv_asm_global_directive, [dnl
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libc_cv_asm_global_directive=UNKNOWN
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for ac_globl in .globl .global; do
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cat > conftest.s <<EOF
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.text
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${ac_globl} foo
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foo: .long 0
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EOF
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if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
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libc_cv_asm_global_directive=${ac_globl}
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fi
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rm -f conftest*
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test $libc_cv_asm_global_directive != UNKNOWN && break
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done])
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if test $libc_cv_asm_global_directive = UNKNOWN; then
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AC_MSG_ERROR(cannot determine asm global directive)
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else
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AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
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fi
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AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
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cat > conftest.s <<EOF
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.text
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foo: .long 0
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.set glibc_conftest_frobozz,foo
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$libc_cv_asm_global_directive glibc_conftest_frobozz
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EOF
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# The alpha-dec-osf1 assembler gives only a warning for `.set'
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# (but it doesn't work), so we must do a linking check to be sure.
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cat > conftest1.c <<\EOF
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extern int glibc_conftest_frobozz;
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main () { printf ("%d\n", glibc_conftest_frobozz); }
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EOF
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if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
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-o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
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libc_cv_asm_set_directive=yes
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else
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libc_cv_asm_set_directive=no
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fi
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rm -f conftest*])
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if test $libc_cv_asm_set_directive = yes; then
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AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
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fi
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if test $elf != yes; then
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AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
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[AC_TRY_COMPILE(, [asm (".section .init");
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asm (".section .fini");],
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libc_cv_have_initfini=yes,
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libc_cv_have_initfini=no)])
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AC_SUBST(libc_cv_have_initfini)dnl
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if test $libc_cv_have_initfini = yes; then
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AC_DEFINE(HAVE_INITFINI)
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fi
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fi
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if test $elf = yes; then
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libc_cv_asm_underscores=no
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else
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AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
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[AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
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libc_cv_asm_underscores=yes,
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libc_cv_asm_underscores=no)])
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fi
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if test $libc_cv_asm_underscores = no; then
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AC_DEFINE(NO_UNDERSCORES)
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fi
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if test $elf = yes; then
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libc_cv_weak_symbols=yes
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libc_cv_asm_weak_directive=yes
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libc_cv_asm_weakext_directive=no
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else
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AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
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[dnl
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cat > conftest.s <<EOF
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.text
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${libc_cv_asm_global_directive} foo
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foo: .long 0
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.weak foo
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.weak bar; bar = foo
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EOF
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if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
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libc_cv_asm_weak_directive=yes
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else
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libc_cv_asm_weak_directive=no
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fi
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rm -f conftest*])
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if test $libc_cv_asm_weak_directive = no; then
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AC_CACHE_CHECK(for assembler .weakext directive,
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|
libc_cv_asm_weakext_directive,
|
|
[dnl
|
|
cat > conftest.s <<EOF
|
|
.text
|
|
${libc_cv_asm_global_directive} foo
|
|
foo: .long 0
|
|
.weakext foo
|
|
.weakext bar, foo
|
|
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
|
|
fi # not ELF
|
|
|
|
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
|
|
main () { exit (0); }
|
|
EOF
|
|
if ${CC-cc} $CFLAGS -Wl,--no-whole-archive \
|
|
-o conftest conftest.c 2>/dev/null; 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
|
|
|
|
### 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=
|
|
|
|
# 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
|
|
if test -r $sysdep_dir/$dir/configure; then
|
|
AC_MSG_RESULT(running configure fragment for $dir)
|
|
. $sysdep_dir/$dir/configure
|
|
fi
|
|
[
|
|
if test -z "$uname"; then
|
|
if test -r $sysdep_dir/$dir/uname.c ||
|
|
test -r $sysdep_dir/$dir/uname.S ||
|
|
{ test -r $sysdep_dir/$dir/syscalls.list &&
|
|
grep '^uname[ ]' $sysdep_dir/$dir/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" = 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_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(shared)
|
|
if test $shared = default; then
|
|
if test $gnu_ld = yes; then
|
|
shared=$elf
|
|
fi
|
|
fi
|
|
AC_SUBST(profile)
|
|
AC_SUBST(omitfp)
|
|
|
|
if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
|
|
config_makefile=
|
|
else
|
|
config_makefile=Makefile
|
|
fi
|
|
|
|
AC_OUTPUT(config.make ${config_makefile} ${config_uname}, ,
|
|
[echo '$config_vars' >> config.make])
|