diff options
| -rwxr-xr-x | configure | 1060 | ||||
| -rw-r--r-- | configure.ac | 238 |
2 files changed, 649 insertions, 649 deletions
diff --git a/configure b/configure index cb0996d59e..9a8acc4ef7 100755 --- a/configure +++ b/configure @@ -635,6 +635,14 @@ CXX_CMATH_HEADER CXX_CSTDLIB_HEADER CXX_SYSINCLUDES SYSINCLUDES +sysnames +submachine +multi_arch +libc_cv_textrel_ifunc +no_stack_protector +stack_protector +libc_cv_ssp +libc_cv_with_fp PYTHON PYTHON_PROG AUTOCONF @@ -654,14 +662,6 @@ LN_S INSTALL_DATA INSTALL_SCRIPT INSTALL_PROGRAM -sysnames -submachine -multi_arch -libc_cv_textrel_ifunc -no_stack_protector -stack_protector -libc_cv_ssp -libc_cv_with_fp base_machine have_tunables build_pt_chown @@ -4025,528 +4025,6 @@ fi test -n "$base_machine" || base_machine=$machine -# Determine whether to use fpu or nofpu sysdeps directories. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for use of fpu sysdeps directories" >&5 -$as_echo_n "checking for use of fpu sysdeps directories... " >&6; } -if ${libc_cv_with_fp+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat > conftest.c <<EOF -#if $with_fp_cond -int dummy; -#else -# error "no hardware floating point" -#endif -EOF -libc_cv_with_fp=no -if ${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s \ - 1>&5 2>&5 ; then - libc_cv_with_fp=yes -fi -rm -f conftest* -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_with_fp" >&5 -$as_echo "$libc_cv_with_fp" >&6; } - - -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector" >&5 -$as_echo_n "checking for -fstack-protector... " >&6; } -if ${libc_cv_ssp+:} false; then : - $as_echo_n "(cached) " >&6 -else - if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector -xc /dev/null -S -o /dev/null' - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 - (eval $ac_try) 2>&5 - ac_status=$? - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 - test $ac_status = 0; }; }; then : - libc_cv_ssp=yes -else - libc_cv_ssp=no -fi - -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp" >&5 -$as_echo "$libc_cv_ssp" >&6; } - -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector-strong" >&5 -$as_echo_n "checking for -fstack-protector-strong... " >&6; } -if ${libc_cv_ssp_strong+:} false; then : - $as_echo_n "(cached) " >&6 -else - if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector-strong -xc /dev/null -S -o /dev/null' - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 - (eval $ac_try) 2>&5 - ac_status=$? - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 - test $ac_status = 0; }; }; then : - libc_cv_ssp_strong=yes -else - libc_cv_ssp_strong=no -fi - -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp_strong" >&5 -$as_echo "$libc_cv_ssp_strong" >&6; } - -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector-all" >&5 -$as_echo_n "checking for -fstack-protector-all... " >&6; } -if ${libc_cv_ssp_all+:} false; then : - $as_echo_n "(cached) " >&6 -else - if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector-all -xc /dev/null -S -o /dev/null' - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 - (eval $ac_try) 2>&5 - ac_status=$? - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 - test $ac_status = 0; }; }; then : - libc_cv_ssp_all=yes -else - libc_cv_ssp_all=no -fi - -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp_all" >&5 -$as_echo "$libc_cv_ssp_all" >&6; } - -stack_protector= -no_stack_protector= -if test "$libc_cv_ssp" = yes; then - no_stack_protector="-fno-stack-protector -DSTACK_PROTECTOR_LEVEL=0" - $as_echo "#define HAVE_CC_NO_STACK_PROTECTOR 1" >>confdefs.h - -fi - -if test "$enable_stack_protector" = yes && test "$libc_cv_ssp" = yes; then - stack_protector="-fstack-protector" - $as_echo "#define STACK_PROTECTOR_LEVEL 1" >>confdefs.h - -elif test "$enable_stack_protector" = all && test "$libc_cv_ssp_all" = yes; then - stack_protector="-fstack-protector-all" - $as_echo "#define STACK_PROTECTOR_LEVEL 2" >>confdefs.h - -elif test "$enable_stack_protector" = strong && test "$libc_cv_ssp_strong" = yes; then - stack_protector="-fstack-protector-strong" - $as_echo "#define STACK_PROTECTOR_LEVEL 3" >>confdefs.h - -else - stack_protector="-fno-stack-protector" - $as_echo "#define STACK_PROTECTOR_LEVEL 0" >>confdefs.h - -fi - - - - -if test -n "$stack_protector"; then - no_ssp=-fno-stack-protector -else - no_ssp= - - if test "$enable_stack_protector" != no; then - as_fn_error $? "--enable-stack-protector=$enable_stack_protector specified, but specified level of stack protection is not supported by the compiler." "$LINENO" 5 - fi -fi - -# For the multi-arch option we need support in the assembler & linker. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for assembler and linker STT_GNU_IFUNC support" >&5 -$as_echo_n "checking for assembler and linker STT_GNU_IFUNC support... " >&6; } -if ${libc_cv_ld_gnu_indirect_function+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat > conftest.S <<EOF -.type foo,%gnu_indirect_function -foo: -.globl _start -_start: -.globl __start -__start: -.data -#ifdef _LP64 -.quad foo -#else -.long foo -#endif -EOF -libc_cv_ld_gnu_indirect_function=no -if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ - -nostartfiles -nostdlib $no_ssp \ - -o conftest conftest.S 1>&5 2>&5; then - # Do a link to see if the backend supports IFUNC relocs. - $READELF -r conftest 1>&5 - LC_ALL=C $READELF -Wr conftest | grep -q 'IRELATIVE\|R_SPARC_JMP_IREL' && { - libc_cv_ld_gnu_indirect_function=yes - } -fi -rm -f conftest* -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ld_gnu_indirect_function" >&5 -$as_echo "$libc_cv_ld_gnu_indirect_function" >&6; } - -# Check if gcc supports attribute ifunc as it is used in libc_ifunc macro. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gcc attribute ifunc support" >&5 -$as_echo_n "checking for gcc attribute ifunc support... " >&6; } -if ${libc_cv_gcc_indirect_function+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat > conftest.c <<EOF -extern int func (int); -int used_func (int a) -{ - return a; -} -static void *resolver () -{ - return &used_func; -} -extern __typeof (func) func __attribute__ ((ifunc ("resolver"))); -EOF -libc_cv_gcc_indirect_function=no -if ${CC-cc} -c conftest.c -o conftest.o 1>&5 \ - 2>&5 ; then - if $READELF -s conftest.o | grep IFUNC >/dev/null 2>&5; then - libc_cv_gcc_indirect_function=yes - fi -fi -rm -f conftest* -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_indirect_function" >&5 -$as_echo "$libc_cv_gcc_indirect_function" >&6; } - -# Check if linker supports textrel relocation with ifunc (used on elf/tests). -# Note that it relies on libc_cv_ld_gnu_indirect_function test above. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker supports textrels along with ifunc" >&5 -$as_echo_n "checking whether the linker supports textrels along with ifunc... " >&6; } -if ${libc_cv_textrel_ifunc+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat > conftest.S <<EOF -.type foo,%gnu_indirect_function -foo: -.globl _start -_start: -.globl __start -__start: -.data -#ifdef _LP64 -.quad foo -#else -.long foo -#endif -.text -.globl address -address: -#ifdef _LP64 -.quad address -#else -.long address -#endif -EOF -libc_cv_textrel_ifunc=no -if test $libc_cv_ld_gnu_indirect_function = yes; then - if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostartfiles -nostdlib $no_ssp -pie -o conftest conftest.S' - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 - (eval $ac_try) 2>&5 - ac_status=$? - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 - test $ac_status = 0; }; }; then - libc_cv_textrel_ifunc=yes - fi -fi -rm -f conftest* -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_textrel_ifunc" >&5 -$as_echo "$libc_cv_textrel_ifunc" >&6; } - - -# Check if CC supports attribute retain as it is used in attribute_used_retain macro. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU attribute retain support" >&5 -$as_echo_n "checking for GNU attribute retain support... " >&6; } -if ${libc_cv_gnu_retain+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat > conftest.c <<EOF -static int var __attribute__ ((used, retain, section ("__libc_atexit"))); -EOF -libc_cv_gnu_retain=no -if ${CC-cc} -Werror -c conftest.c -o /dev/null 1>&5 \ - 2>&5 ; then - libc_cv_gnu_retain=yes -fi -rm -f conftest* -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gnu_retain" >&5 -$as_echo "$libc_cv_gnu_retain" >&6; } -if test $libc_cv_gnu_retain = yes; then - $as_echo "#define HAVE_GNU_RETAIN 1" >>confdefs.h - -fi -config_vars="$config_vars -have-gnu-retain = $libc_cv_gnu_retain" - -# Check if gcc warns about alias for function with incompatible types. -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler warns about alias for function with incompatible types" >&5 -$as_echo_n "checking if compiler warns about alias for function with incompatible types... " >&6; } -if ${libc_cv_gcc_incompatible_alias+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat > conftest.c <<EOF -int __redirect_foo (const void *s, int c); - -__typeof (__redirect_foo) *foo_impl (void) __asm__ ("foo"); -__typeof (__redirect_foo) *foo_impl (void) -{ - return 0; -} - -extern __typeof (__redirect_foo) foo_alias __attribute__ ((alias ("foo"))); -EOF -libc_cv_gcc_incompatible_alias=yes -if ${CC-cc} -Werror -c conftest.c -o conftest.o 1>&5 2>&5 ; then - libc_cv_gcc_incompatible_alias=no -fi -rm -f conftest* -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_incompatible_alias" >&5 -$as_echo "$libc_cv_gcc_incompatible_alias" >&6; } - -if test x"$libc_cv_ld_gnu_indirect_function" != xyes; then - if test x"$multi_arch" = xyes; then - as_fn_error $? "--enable-multi-arch support requires assembler and linker support" "$LINENO" 5 - else - multi_arch=no - fi -fi -if test x"$libc_cv_gcc_indirect_function" != xyes; then - # GCC 8+ emits a warning for alias with incompatible types and it might - # fail to build ifunc resolvers aliases to either weak or internal - # symbols. Disables multiarch build in this case. - if test x"$libc_cv_gcc_incompatible_alias" = xyes; then - { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: gcc emits a warning for alias between functions of incompatible types" >&5 -$as_echo "$as_me: WARNING: gcc emits a warning for alias between functions of incompatible types" >&2;} - if test x"$multi_arch" = xyes; then - as_fn_error $? "--enable-multi-arch support requires a gcc with gnu-indirect-function support" "$LINENO" 5 - fi - { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Multi-arch is disabled." >&5 -$as_echo "$as_me: WARNING: Multi-arch is disabled." >&2;} - multi_arch=no - elif test x"$multi_arch" = xyes; then - { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support. -Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&5 -$as_echo "$as_me: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support. -Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&2;} - fi -fi -multi_arch_d= -if test x"$multi_arch" != xno; then - multi_arch_d=/multiarch -fi - -# Compute the list of sysdep directories for this configuration. -# This can take a while to compute. -sysdep_dir=$srcdir/sysdeps -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking sysdep dirs" >&5 -$as_echo_n "checking sysdep dirs... " >&6; } -# 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'`" - -test "x$base_os" != x || case "$os" in -gnu*) - base_os=mach/hurd ;; -linux*) - base_os=unix/sysv ;; -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${submachine:+/$submachine} -while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do - set $m - # Prepend the machine's FPU directory unless the architecture specific - # preconfigure disables it. - if test "$libc_cv_with_fp" = yes; then - maybe_fpu=/fpu - else - maybe_fpu=/nofpu - fi - # For each machine term, try it with and then without /multiarch. - for try_fpu in $maybe_fpu ''; do - for try_multi in $multi_arch_d ''; do - mach="$mach /$1$try_fpu$try_multi" - done - done - tail="$2" -done - - -# Find what sysdep directories exist. -sysnames= -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 $mach ''; do - try_suffix="$m0$b$v$o$m" - if test -n "$try_suffix"; then - try_srcdir="${srcdir}/" - try="sysdeps$try_suffix" - test -n "$enable_debug_configure" && - echo "$0 DEBUG: try $try" >&2 - if test -d "$try_srcdir$try"; then - sysnames="$sysnames $try" - { test -n "$o" || test -n "$b"; } && os_used=t - { test -n "$m" || test -n "$m0"; } && machine_used=t - case x${m0:-$m} in - x*/$submachine) submachine_used=t ;; - esac - fi - fi - done - done - done - done -done - -# If the assembler supports gnu_indirect_function symbol type and the -# architecture supports multi-arch, we enable multi-arch by default. -case $sysnames in -*"$multi_arch_d"*) - ;; -*) - test x"$multi_arch" = xdefault && multi_arch=no - ;; -esac -if test x"$multi_arch" != xno; then - $as_echo "#define USE_MULTIARCH 1" >>confdefs.h - -fi - - -if test -z "$os_used" && test "$os" != none; then - as_fn_error $? "Operating system $os is not supported." "$LINENO" 5 -fi -if test -z "$machine_used" && test "$machine" != none; then - as_fn_error $? "The $machine is not supported." "$LINENO" 5 -fi -if test -z "$submachine_used" && test -n "$submachine"; then - as_fn_error $? "The $submachine subspecies of $host_cpu is not supported." "$LINENO" 5 -fi - - -# We have now validated the configuration. - -# 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 $ECHO_N "$name $ECHO_C" >&6 - - 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 - - for implies_file in Implies Implies-before Implies-after; do - implies_type=`echo $implies_file | sed s/-/_/` - eval ${implies_type}= - if test -f $xsrcdir$name/$implies_file; then - # Collect more names from the `Implies' file (removing comments). - implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/$implies_file`" - for x in $implied_candidate; do - found=no - if test -d $xsrcdir$name_base/$x; then - eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\"" - found=yes - fi - try="sysdeps/$x" - try_srcdir=$srcdir/ - test -n "$enable_debug_configure" && - echo "DEBUG: $name $implies_file $x try() {$try_srcdir}$try" >&2 - if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; - then - eval "${implies_type}=\"\$${implies_type} \$try\"" - found=yes - fi - if test $found = no; then - { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $name/$implies_file specifies nonexistent $x" >&5 -$as_echo "$as_me: WARNING: $name/$implies_file specifies nonexistent $x" >&2;} - fi - done - fi - done - - # Add NAME to the list of names. - names="$names $name" - - # Find the parent of NAME, using the empty string if it has none. - parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" - - test -n "$enable_debug_configure" && - echo "DEBUG: $name Implies='$Implies' rest='$*' parent='$parent' \ -Implies_before='$Implies_before' Implies_after='$Implies_after'" >&2 - - # 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 $Implies $* $Implies_before $parent $Implies_after`" - test -n "$sysnames" && set $sysnames -done - -# Add the default directories. -default_sysnames="sysdeps/generic" -sysnames="$names $default_sysnames" - -# The other names were emitted during the scan. -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $default_sysnames" >&5 -$as_echo "$default_sysnames" >&6; } - - ### Locate tools. # Find a good install program. We prefer a C program (faster), @@ -5642,6 +5120,528 @@ $as_echo "$as_me: WARNING: *** some features or tests will be disabled. *** Check the INSTALL file for required versions." >&2;} + +# Determine whether to use fpu or nofpu sysdeps directories. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for use of fpu sysdeps directories" >&5 +$as_echo_n "checking for use of fpu sysdeps directories... " >&6; } +if ${libc_cv_with_fp+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.c <<EOF +#if $with_fp_cond +int dummy; +#else +# error "no hardware floating point" +#endif +EOF +libc_cv_with_fp=no +if ${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s \ + 1>&5 2>&5 ; then + libc_cv_with_fp=yes +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_with_fp" >&5 +$as_echo "$libc_cv_with_fp" >&6; } + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector" >&5 +$as_echo_n "checking for -fstack-protector... " >&6; } +if ${libc_cv_ssp+:} false; then : + $as_echo_n "(cached) " >&6 +else + if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector -xc /dev/null -S -o /dev/null' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then : + libc_cv_ssp=yes +else + libc_cv_ssp=no +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp" >&5 +$as_echo "$libc_cv_ssp" >&6; } + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector-strong" >&5 +$as_echo_n "checking for -fstack-protector-strong... " >&6; } +if ${libc_cv_ssp_strong+:} false; then : + $as_echo_n "(cached) " >&6 +else + if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector-strong -xc /dev/null -S -o /dev/null' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then : + libc_cv_ssp_strong=yes +else + libc_cv_ssp_strong=no +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp_strong" >&5 +$as_echo "$libc_cv_ssp_strong" >&6; } + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector-all" >&5 +$as_echo_n "checking for -fstack-protector-all... " >&6; } +if ${libc_cv_ssp_all+:} false; then : + $as_echo_n "(cached) " >&6 +else + if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector-all -xc /dev/null -S -o /dev/null' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then : + libc_cv_ssp_all=yes +else + libc_cv_ssp_all=no +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp_all" >&5 +$as_echo "$libc_cv_ssp_all" >&6; } + +stack_protector= +no_stack_protector= +if test "$libc_cv_ssp" = yes; then + no_stack_protector="-fno-stack-protector -DSTACK_PROTECTOR_LEVEL=0" + $as_echo "#define HAVE_CC_NO_STACK_PROTECTOR 1" >>confdefs.h + +fi + +if test "$enable_stack_protector" = yes && test "$libc_cv_ssp" = yes; then + stack_protector="-fstack-protector" + $as_echo "#define STACK_PROTECTOR_LEVEL 1" >>confdefs.h + +elif test "$enable_stack_protector" = all && test "$libc_cv_ssp_all" = yes; then + stack_protector="-fstack-protector-all" + $as_echo "#define STACK_PROTECTOR_LEVEL 2" >>confdefs.h + +elif test "$enable_stack_protector" = strong && test "$libc_cv_ssp_strong" = yes; then + stack_protector="-fstack-protector-strong" + $as_echo "#define STACK_PROTECTOR_LEVEL 3" >>confdefs.h + +else + stack_protector="-fno-stack-protector" + $as_echo "#define STACK_PROTECTOR_LEVEL 0" >>confdefs.h + +fi + + + + +if test -n "$stack_protector"; then + no_ssp=-fno-stack-protector +else + no_ssp= + + if test "$enable_stack_protector" != no; then + as_fn_error $? "--enable-stack-protector=$enable_stack_protector specified, but specified level of stack protection is not supported by the compiler." "$LINENO" 5 + fi +fi + +# For the multi-arch option we need support in the assembler & linker. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for assembler and linker STT_GNU_IFUNC support" >&5 +$as_echo_n "checking for assembler and linker STT_GNU_IFUNC support... " >&6; } +if ${libc_cv_ld_gnu_indirect_function+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.S <<EOF +.type foo,%gnu_indirect_function +foo: +.globl _start +_start: +.globl __start +__start: +.data +#ifdef _LP64 +.quad foo +#else +.long foo +#endif +EOF +libc_cv_ld_gnu_indirect_function=no +if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ + -nostartfiles -nostdlib $no_ssp \ + -o conftest conftest.S 1>&5 2>&5; then + # Do a link to see if the backend supports IFUNC relocs. + $READELF -r conftest 1>&5 + LC_ALL=C $READELF -Wr conftest | grep -q 'IRELATIVE\|R_SPARC_JMP_IREL' && { + libc_cv_ld_gnu_indirect_function=yes + } +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ld_gnu_indirect_function" >&5 +$as_echo "$libc_cv_ld_gnu_indirect_function" >&6; } + +# Check if gcc supports attribute ifunc as it is used in libc_ifunc macro. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gcc attribute ifunc support" >&5 +$as_echo_n "checking for gcc attribute ifunc support... " >&6; } +if ${libc_cv_gcc_indirect_function+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.c <<EOF +extern int func (int); +int used_func (int a) +{ + return a; +} +static void *resolver () +{ + return &used_func; +} +extern __typeof (func) func __attribute__ ((ifunc ("resolver"))); +EOF +libc_cv_gcc_indirect_function=no +if ${CC-cc} -c conftest.c -o conftest.o 1>&5 \ + 2>&5 ; then + if $READELF -s conftest.o | grep IFUNC >/dev/null 2>&5; then + libc_cv_gcc_indirect_function=yes + fi +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_indirect_function" >&5 +$as_echo "$libc_cv_gcc_indirect_function" >&6; } + +# Check if linker supports textrel relocation with ifunc (used on elf/tests). +# Note that it relies on libc_cv_ld_gnu_indirect_function test above. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker supports textrels along with ifunc" >&5 +$as_echo_n "checking whether the linker supports textrels along with ifunc... " >&6; } +if ${libc_cv_textrel_ifunc+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.S <<EOF +.type foo,%gnu_indirect_function +foo: +.globl _start +_start: +.globl __start +__start: +.data +#ifdef _LP64 +.quad foo +#else +.long foo +#endif +.text +.globl address +address: +#ifdef _LP64 +.quad address +#else +.long address +#endif +EOF +libc_cv_textrel_ifunc=no +if test $libc_cv_ld_gnu_indirect_function = yes; then + if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostartfiles -nostdlib $no_ssp -pie -o conftest conftest.S' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + libc_cv_textrel_ifunc=yes + fi +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_textrel_ifunc" >&5 +$as_echo "$libc_cv_textrel_ifunc" >&6; } + + +# Check if CC supports attribute retain as it is used in attribute_used_retain macro. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU attribute retain support" >&5 +$as_echo_n "checking for GNU attribute retain support... " >&6; } +if ${libc_cv_gnu_retain+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.c <<EOF +static int var __attribute__ ((used, retain, section ("__libc_atexit"))); +EOF +libc_cv_gnu_retain=no +if ${CC-cc} -Werror -c conftest.c -o /dev/null 1>&5 \ + 2>&5 ; then + libc_cv_gnu_retain=yes +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gnu_retain" >&5 +$as_echo "$libc_cv_gnu_retain" >&6; } +if test $libc_cv_gnu_retain = yes; then + $as_echo "#define HAVE_GNU_RETAIN 1" >>confdefs.h + +fi +config_vars="$config_vars +have-gnu-retain = $libc_cv_gnu_retain" + +# Check if gcc warns about alias for function with incompatible types. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler warns about alias for function with incompatible types" >&5 +$as_echo_n "checking if compiler warns about alias for function with incompatible types... " >&6; } +if ${libc_cv_gcc_incompatible_alias+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.c <<EOF +int __redirect_foo (const void *s, int c); + +__typeof (__redirect_foo) *foo_impl (void) __asm__ ("foo"); +__typeof (__redirect_foo) *foo_impl (void) +{ + return 0; +} + +extern __typeof (__redirect_foo) foo_alias __attribute__ ((alias ("foo"))); +EOF +libc_cv_gcc_incompatible_alias=yes +if ${CC-cc} -Werror -c conftest.c -o conftest.o 1>&5 2>&5 ; then + libc_cv_gcc_incompatible_alias=no +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_incompatible_alias" >&5 +$as_echo "$libc_cv_gcc_incompatible_alias" >&6; } + +if test x"$libc_cv_ld_gnu_indirect_function" != xyes; then + if test x"$multi_arch" = xyes; then + as_fn_error $? "--enable-multi-arch support requires assembler and linker support" "$LINENO" 5 + else + multi_arch=no + fi +fi +if test x"$libc_cv_gcc_indirect_function" != xyes; then + # GCC 8+ emits a warning for alias with incompatible types and it might + # fail to build ifunc resolvers aliases to either weak or internal + # symbols. Disables multiarch build in this case. + if test x"$libc_cv_gcc_incompatible_alias" = xyes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: gcc emits a warning for alias between functions of incompatible types" >&5 +$as_echo "$as_me: WARNING: gcc emits a warning for alias between functions of incompatible types" >&2;} + if test x"$multi_arch" = xyes; then + as_fn_error $? "--enable-multi-arch support requires a gcc with gnu-indirect-function support" "$LINENO" 5 + fi + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Multi-arch is disabled." >&5 +$as_echo "$as_me: WARNING: Multi-arch is disabled." >&2;} + multi_arch=no + elif test x"$multi_arch" = xyes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support. +Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&5 +$as_echo "$as_me: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support. +Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&2;} + fi +fi +multi_arch_d= +if test x"$multi_arch" != xno; then + multi_arch_d=/multiarch +fi + +# Compute the list of sysdep directories for this configuration. +# This can take a while to compute. +sysdep_dir=$srcdir/sysdeps +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking sysdep dirs" >&5 +$as_echo_n "checking sysdep dirs... " >&6; } +# 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'`" + +test "x$base_os" != x || case "$os" in +gnu*) + base_os=mach/hurd ;; +linux*) + base_os=unix/sysv ;; +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${submachine:+/$submachine} +while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do + set $m + # Prepend the machine's FPU directory unless the architecture specific + # preconfigure disables it. + if test "$libc_cv_with_fp" = yes; then + maybe_fpu=/fpu + else + maybe_fpu=/nofpu + fi + # For each machine term, try it with and then without /multiarch. + for try_fpu in $maybe_fpu ''; do + for try_multi in $multi_arch_d ''; do + mach="$mach /$1$try_fpu$try_multi" + done + done + tail="$2" +done + + +# Find what sysdep directories exist. +sysnames= +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 $mach ''; do + try_suffix="$m0$b$v$o$m" + if test -n "$try_suffix"; then + try_srcdir="${srcdir}/" + try="sysdeps$try_suffix" + test -n "$enable_debug_configure" && + echo "$0 DEBUG: try $try" >&2 + if test -d "$try_srcdir$try"; then + sysnames="$sysnames $try" + { test -n "$o" || test -n "$b"; } && os_used=t + { test -n "$m" || test -n "$m0"; } && machine_used=t + case x${m0:-$m} in + x*/$submachine) submachine_used=t ;; + esac + fi + fi + done + done + done + done +done + +# If the assembler supports gnu_indirect_function symbol type and the +# architecture supports multi-arch, we enable multi-arch by default. +case $sysnames in +*"$multi_arch_d"*) + ;; +*) + test x"$multi_arch" = xdefault && multi_arch=no + ;; +esac +if test x"$multi_arch" != xno; then + $as_echo "#define USE_MULTIARCH 1" >>confdefs.h + +fi + + +if test -z "$os_used" && test "$os" != none; then + as_fn_error $? "Operating system $os is not supported." "$LINENO" 5 +fi +if test -z "$machine_used" && test "$machine" != none; then + as_fn_error $? "The $machine is not supported." "$LINENO" 5 +fi +if test -z "$submachine_used" && test -n "$submachine"; then + as_fn_error $? "The $submachine subspecies of $host_cpu is not supported." "$LINENO" 5 +fi + + +# We have now validated the configuration. + +# 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 $ECHO_N "$name $ECHO_C" >&6 + + 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 + + for implies_file in Implies Implies-before Implies-after; do + implies_type=`echo $implies_file | sed s/-/_/` + eval ${implies_type}= + if test -f $xsrcdir$name/$implies_file; then + # Collect more names from the `Implies' file (removing comments). + implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/$implies_file`" + for x in $implied_candidate; do + found=no + if test -d $xsrcdir$name_base/$x; then + eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\"" + found=yes + fi + try="sysdeps/$x" + try_srcdir=$srcdir/ + test -n "$enable_debug_configure" && + echo "DEBUG: $name $implies_file $x try() {$try_srcdir}$try" >&2 + if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; + then + eval "${implies_type}=\"\$${implies_type} \$try\"" + found=yes + fi + if test $found = no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $name/$implies_file specifies nonexistent $x" >&5 +$as_echo "$as_me: WARNING: $name/$implies_file specifies nonexistent $x" >&2;} + fi + done + fi + done + + # Add NAME to the list of names. + names="$names $name" + + # Find the parent of NAME, using the empty string if it has none. + parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" + + test -n "$enable_debug_configure" && + echo "DEBUG: $name Implies='$Implies' rest='$*' parent='$parent' \ +Implies_before='$Implies_before' Implies_after='$Implies_after'" >&2 + + # 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 $Implies $* $Implies_before $parent $Implies_after`" + test -n "$sysnames" && set $sysnames +done + +# Add the default directories. +default_sysnames="sysdeps/generic" +sysnames="$names $default_sysnames" + +# The other names were emitted during the scan. +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $default_sysnames" >&5 +$as_echo "$default_sysnames" >&6; } + # if using special system headers, find out the compiler's sekrit # header directory and add that to the list. NOTE: Only does the right # thing on a system that doesn't need fixincludes. (Not presently a problem.) diff --git a/configure.ac b/configure.ac index 20b5e8043f..5709c7a0cf 100644 --- a/configure.ac +++ b/configure.ac @@ -560,6 +560,125 @@ fi test -n "$base_machine" || base_machine=$machine AC_SUBST(base_machine) +### Locate tools. + +AC_PROG_INSTALL +if test "$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 + +LIBC_PROG_BINUTILS + +# Accept binutils 2.25 or newer. +AC_CHECK_PROG_VER(AS, $AS, --version, + [GNU assembler.* \([0-9]*\.[0-9.]*\)], + [2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], + AS=: critic_missing="$critic_missing as") + +libc_cv_with_lld=no +case $($LD --version) in + "GNU gold"*) + # Accept gold 1.14 or higher + AC_CHECK_PROG_VER(LD, $LD, --version, + [GNU gold.* \([0-9][0-9]*\.[0-9.]*\)], + [1.1[4-9]*|1.[2-9][0-9]*|1.1[0-9][0-9]*|[2-9].*|[1-9][0-9]*], + LD=: critic_missing="$critic_missing GNU gold") + ;; + "LLD"*) + # Accept LLD 13.0.0 or higher + AC_CHECK_PROG_VER(LD, $LD, --version, + [LLD.* \([0-9][0-9]*\.[0-9.]*\)], + [1[3-9].*|[2-9][0-9].*], + LD=: critic_missing="$critic_missing LLD") + libc_cv_with_lld=yes + ;; + *) + AC_CHECK_PROG_VER(LD, $LD, --version, + [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], + [2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], + LD=: critic_missing="$critic_missing GNU ld") + ;; +esac +LIBC_CONFIG_VAR([with-lld], [$libc_cv_with_lld]) + +# These programs are version sensitive. +AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, + [GNU Make[^0-9]*\([0-9][0-9.]*\)], + [[4-9].* | [1-9][0-9]*], critic_missing="$critic_missing make") + +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.[7-9]*|4.[1-9][0-9]*|[5-9].*], + MAKEINFO=: aux_missing="$aux_missing makeinfo") +AC_CHECK_PROG_VER(SED, sed, --version, + [GNU sed[^0-9]* \([0-9]*\.[0-9.]*\)], + [3.0[2-9]*|3.[1-9]*|[4-9]*], + SED=: aux_missing="$aux_missing sed") +AC_CHECK_PROG_VER(AWK, gawk, --version, + [GNU Awk[^0-9]*\([0-9][0-9.]*\)], + [3.1.[2-9]*|3.[2-9]*|[4-9]*], critic_missing="$critic_missing gawk") +AC_CHECK_PROG_VER(BISON, bison, --version, + [bison (GNU Bison) \([0-9]*\.[0-9.]*\)], + [2.7*|[3-9].*|[1-9][0-9]*], critic_missing="$critic_missing bison") + +AC_CACHE_CHECK([if $CC is sufficient to build libc], libc_cv_compiler_ok, [ +AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[]], [[ +#if !defined __GNUC__ || __GNUC__ < 6 || (__GNUC__ == 6 && __GNUC_MINOR__ < 2) +#error insufficient compiler +#endif]])], + [libc_cv_compiler_ok=yes], + [libc_cv_compiler_ok=no])]) +AS_IF([test $libc_cv_compiler_ok != yes], + [critic_missing="$critic_missing compiler"]) + +AC_CHECK_TOOL(NM, nm, false) + +if test "x$maintainer" = "xyes"; then + AC_CHECK_PROGS(AUTOCONF, autoconf, no) + case "x$AUTOCONF" in + xno|x|x:) AUTOCONF=no ;; + *) + AC_CACHE_CHECK(dnl + whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl + if (cd $srcdir; $AUTOCONF $ACFLAGS configure.ac > /dev/null 2>&1); then + libc_cv_autoconf_works=yes + else + libc_cv_autoconf_works=no + fi]) + test $libc_cv_autoconf_works = yes || AUTOCONF=no + ;; + esac + if test "x$AUTOCONF" = xno; then + aux_missing="$aux_missing autoconf" + fi +else + AUTOCONF=no +fi + +# Check for python3 if available, or else python. +AC_CHECK_PROG_VER(PYTHON_PROG, python3 python, --version, + [Python \([0-9][0-9.]*\)], + [3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*], + critic_missing="$critic_missing python") +PYTHON="$PYTHON_PROG -B" +AC_SUBST(PYTHON) + +test -n "$critic_missing" && AC_MSG_ERROR([ +*** These critical programs are missing or too old:$critic_missing +*** Check the INSTALL file for required versions.]) + +test -n "$aux_missing" && AC_MSG_WARN([ +*** These auxiliary programs are missing or incompatible versions:$aux_missing +*** some features or tests will be disabled. +*** Check the INSTALL file for required versions.]) + + # Determine whether to use fpu or nofpu sysdeps directories. AC_CACHE_CHECK([for use of fpu sysdeps directories], libc_cv_with_fp, [dnl @@ -991,125 +1110,6 @@ 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 - -LIBC_PROG_BINUTILS - -# Accept binutils 2.25 or newer. -AC_CHECK_PROG_VER(AS, $AS, --version, - [GNU assembler.* \([0-9]*\.[0-9.]*\)], - [2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], - AS=: critic_missing="$critic_missing as") - -libc_cv_with_lld=no -case $($LD --version) in - "GNU gold"*) - # Accept gold 1.14 or higher - AC_CHECK_PROG_VER(LD, $LD, --version, - [GNU gold.* \([0-9][0-9]*\.[0-9.]*\)], - [1.1[4-9]*|1.[2-9][0-9]*|1.1[0-9][0-9]*|[2-9].*|[1-9][0-9]*], - LD=: critic_missing="$critic_missing GNU gold") - ;; - "LLD"*) - # Accept LLD 13.0.0 or higher - AC_CHECK_PROG_VER(LD, $LD, --version, - [LLD.* \([0-9][0-9]*\.[0-9.]*\)], - [1[3-9].*|[2-9][0-9].*], - LD=: critic_missing="$critic_missing LLD") - libc_cv_with_lld=yes - ;; - *) - AC_CHECK_PROG_VER(LD, $LD, --version, - [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], - [2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], - LD=: critic_missing="$critic_missing GNU ld") - ;; -esac -LIBC_CONFIG_VAR([with-lld], [$libc_cv_with_lld]) - -# These programs are version sensitive. -AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, - [GNU Make[^0-9]*\([0-9][0-9.]*\)], - [[4-9].* | [1-9][0-9]*], critic_missing="$critic_missing make") - -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.[7-9]*|4.[1-9][0-9]*|[5-9].*], - MAKEINFO=: aux_missing="$aux_missing makeinfo") -AC_CHECK_PROG_VER(SED, sed, --version, - [GNU sed[^0-9]* \([0-9]*\.[0-9.]*\)], - [3.0[2-9]*|3.[1-9]*|[4-9]*], - SED=: aux_missing="$aux_missing sed") -AC_CHECK_PROG_VER(AWK, gawk, --version, - [GNU Awk[^0-9]*\([0-9][0-9.]*\)], - [3.1.[2-9]*|3.[2-9]*|[4-9]*], critic_missing="$critic_missing gawk") -AC_CHECK_PROG_VER(BISON, bison, --version, - [bison (GNU Bison) \([0-9]*\.[0-9.]*\)], - [2.7*|[3-9].*|[1-9][0-9]*], critic_missing="$critic_missing bison") - -AC_CACHE_CHECK([if $CC is sufficient to build libc], libc_cv_compiler_ok, [ -AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[]], [[ -#if !defined __GNUC__ || __GNUC__ < 6 || (__GNUC__ == 6 && __GNUC_MINOR__ < 2) -#error insufficient compiler -#endif]])], - [libc_cv_compiler_ok=yes], - [libc_cv_compiler_ok=no])]) -AS_IF([test $libc_cv_compiler_ok != yes], - [critic_missing="$critic_missing compiler"]) - -AC_CHECK_TOOL(NM, nm, false) - -if test "x$maintainer" = "xyes"; then - AC_CHECK_PROGS(AUTOCONF, autoconf, no) - case "x$AUTOCONF" in - xno|x|x:) AUTOCONF=no ;; - *) - AC_CACHE_CHECK(dnl - whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl - if (cd $srcdir; $AUTOCONF $ACFLAGS configure.ac > /dev/null 2>&1); then - libc_cv_autoconf_works=yes - else - libc_cv_autoconf_works=no - fi]) - test $libc_cv_autoconf_works = yes || AUTOCONF=no - ;; - esac - if test "x$AUTOCONF" = xno; then - aux_missing="$aux_missing autoconf" - fi -else - AUTOCONF=no -fi - -# Check for python3 if available, or else python. -AC_CHECK_PROG_VER(PYTHON_PROG, python3 python, --version, - [Python \([0-9][0-9.]*\)], - [3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*], - critic_missing="$critic_missing python") -PYTHON="$PYTHON_PROG -B" -AC_SUBST(PYTHON) - -test -n "$critic_missing" && AC_MSG_ERROR([ -*** These critical programs are missing or too old:$critic_missing -*** Check the INSTALL file for required versions.]) - -test -n "$aux_missing" && AC_MSG_WARN([ -*** These auxiliary programs are missing or incompatible versions:$aux_missing -*** some features or tests will be disabled. -*** Check the INSTALL file for required versions.]) - # 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.) |