mirror of git://sourceware.org/git/glibc.git
350 lines
10 KiB
Plaintext
350 lines
10 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
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# Local configure fragment for sysdeps/x86.
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# Check if linker supports x86 ISA level.
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for linker x86 ISA level support" >&5
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printf %s "checking for linker x86 ISA level support... " >&6; }
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if test ${libc_cv_include_x86_isa_level+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) cat > conftest1.S <<EOF
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#ifdef __LP64__
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# define P2ALIGN 3
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#else
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# define P2ALIGN 2
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#endif
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.section ".note.gnu.property", "a"
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.p2align P2ALIGN
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.long 1f - 0f /* name length. */
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.long 4f - 1f /* data length. */
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/* NT_GNU_PROPERTY_TYPE_0 */
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.long 5 /* note type. */
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0:
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.asciz "GNU" /* vendor name. */
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1:
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.p2align P2ALIGN
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/* GNU_PROPERTY_X86_ISA_1_NEEDED */
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.long 0xc0008002 /* pr_type. */
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.long 3f - 2f /* pr_datasz. */
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2:
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.long 0x1
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3:
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.p2align P2ALIGN
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4:
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EOF
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cat > conftest2.S <<EOF
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#ifdef __LP64__
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# define P2ALIGN 3
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#else
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# define P2ALIGN 2
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#endif
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.section ".note.gnu.property", "a"
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.p2align P2ALIGN
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.long 1f - 0f /* name length. */
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.long 4f - 1f /* data length. */
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/* NT_GNU_PROPERTY_TYPE_0 */
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.long 5 /* note type. */
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0:
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.asciz "GNU" /* vendor name. */
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1:
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.p2align P2ALIGN
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/* GNU_PROPERTY_X86_ISA_1_NEEDED */
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.long 0xc0008002 /* pr_type. */
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.long 3f - 2f /* pr_datasz. */
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2:
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.long 0x2
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3:
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.p2align P2ALIGN
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4:
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EOF
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libc_cv_include_x86_isa_level=no
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if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -nostartfiles -nostdlib -r -o conftest conftest1.S conftest2.S'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }; then
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count=`LC_ALL=C $READELF -n conftest | grep NT_GNU_PROPERTY_TYPE_0 | wc -l`
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if test "$count" = 1; then
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libc_cv_include_x86_isa_level=yes
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fi
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fi
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rm -f conftest* ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_include_x86_isa_level" >&5
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printf "%s\n" "$libc_cv_include_x86_isa_level" >&6; }
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if test $libc_cv_include_x86_isa_level = yes; then
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printf "%s\n" "#define INCLUDE_X86_ISA_LEVEL 1" >>confdefs.h
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for LAHF/SAHF instruction support" >&5
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printf %s "checking for LAHF/SAHF instruction support... " >&6; }
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if test ${libc_cv_have_x86_lahf_sahf+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) libc_cv_have_x86_lahf_sahf=no
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if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; } | grep -qE '(-msahf\b|-march=x86-64-v)'; then
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libc_cv_have_x86_lahf_sahf=yes
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_lahf_sahf" >&5
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printf "%s\n" "$libc_cv_have_x86_lahf_sahf" >&6; }
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if test $libc_cv_have_x86_lahf_sahf = yes; then
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printf "%s\n" "#define HAVE_X86_LAHF_SAHF 1" >>confdefs.h
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ISAFLAG="-DHAVE_X86_LAHF_SAHF"
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for MOVBE instruction support" >&5
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printf %s "checking for MOVBE instruction support... " >&6; }
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if test ${libc_cv_have_x86_movbe+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) libc_cv_have_x86_movbe=no
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if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; } | grep -qE '(-mmovbe\b|-march=x86-64-v([3-9]|[1-9][0-9]))'; then
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libc_cv_have_x86_movbe=yes
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_movbe" >&5
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printf "%s\n" "$libc_cv_have_x86_movbe" >&6; }
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if test $libc_cv_have_x86_movbe = yes; then
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printf "%s\n" "#define HAVE_X86_MOVBE 1" >>confdefs.h
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ISAFLAG="$ISAFLAG -DHAVE_X86_MOVBE"
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fi
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# Check for ISA level support.
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ISA level support" >&5
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printf %s "checking for ISA level support... " >&6; }
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if test ${libc_cv_have_x86_isa_level+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) cat > conftest.c <<EOF
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#include <sysdeps/x86/isa-level.h>
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#if MINIMUM_X86_ISA_LEVEL >= 4
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libc_cv_have_x86_isa_level=4
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#elif MINIMUM_X86_ISA_LEVEL == 3
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libc_cv_have_x86_isa_level=3
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#elif MINIMUM_X86_ISA_LEVEL == 2
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libc_cv_have_x86_isa_level=2
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#elif defined __x86_64__
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libc_cv_have_x86_isa_level=baseline
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#elif MINIMUM_X86_ISA_LEVEL == 1
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libc_cv_have_x86_isa_level=1
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#else
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libc_cv_have_x86_isa_level=0
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#endif
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EOF
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eval `${CC-cc} $CFLAGS $CPPFLAGS $ISAFLAG -I$srcdir -E conftest.c | grep libc_cv_have_x86_isa_level`
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rm -rf conftest* ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_isa_level" >&5
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printf "%s\n" "$libc_cv_have_x86_isa_level" >&6; }
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elif test $base_machine = x86_64; then
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libc_cv_have_x86_isa_level=baseline
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else
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libc_cv_have_x86_isa_level=0
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fi
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if test $libc_cv_have_x86_isa_level = baseline; then
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printf "%s\n" "#define MINIMUM_X86_ISA_LEVEL 1" >>confdefs.h
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else
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printf "%s\n" "#define MINIMUM_X86_ISA_LEVEL $libc_cv_have_x86_isa_level" >>confdefs.h
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fi
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config_vars="$config_vars
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have-x86-isa-level = $libc_cv_have_x86_isa_level"
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config_vars="$config_vars
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x86-isa-level-2-or-above = 2 3 4"
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config_vars="$config_vars
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x86-isa-level-3-or-above = 3 4"
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config_vars="$config_vars
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x86-isa-level-4-or-above = 4"
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config_vars="$config_vars
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enable-x86-isa-level = $libc_cv_include_x86_isa_level"
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saved_CC="$CC"
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CC="$TEST_CC"
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -mfpmath=387 works in testing" >&5
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printf %s "checking if -mfpmath=387 works in testing... " >&6; }
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if test ${libc_cv_have_test_cc_cflags_mfpmath_387+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) if { ac_try='${CC-cc} -Werror -mfpmath=387 -xc /dev/null -S -o /dev/null'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then :
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libc_cv_have_test_cc_cflags_mfpmath_387=yes
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else case e in #(
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e) libc_cv_have_test_cc_cflags_mfpmath_387=no
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;;
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esac
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_test_cc_cflags_mfpmath_387" >&5
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printf "%s\n" "$libc_cv_have_test_cc_cflags_mfpmath_387" >&6; }
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CC="$saved_CC"
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config_vars="$config_vars
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have-test-cc-cflags-mfpmath-387 = $libc_cv_have_test_cc_cflags_mfpmath_387"
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conftest_code="
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extern int foo;
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int *
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foo_p (void)
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{
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return &foo;
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}
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"
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cat > conftest.c <<EOF
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$conftest_code
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EOF
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if no direct extern access is enabled by default" >&5
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printf %s "checking if no direct extern access is enabled by default... " >&6; }
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if test ${libc_cv_cc_no_direct_extern_access+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S -O2 -fno-pic conftest.c -o conftest 1>&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_cv_cc_cflags_no_direct_extern_access=no
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if test "$base_machine" = x86_64; then
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if grep -E -q "mov[lq][ ]+foo@GOTPCREL\(%rip\)," conftest; then
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libc_cv_cc_no_direct_extern_access=yes
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fi
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elif test "$base_machine" = i386; then
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if grep -E -q "movl[ ]+foo@GOT," conftest; then
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libc_cv_cc_no_direct_extern_access=yes
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fi
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else
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echo unsupported machine: $base_machine
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rm -f conftest*
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exit 1
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fi
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else
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echo failed to check no direct external data access
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rm -f conftest*
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exit 1
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_no_direct_extern_access" >&5
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printf "%s\n" "$libc_cv_cc_no_direct_extern_access" >&6; }
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rm -f conftest*
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saved_CC="$CC"
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CC="$TEST_CC"
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -mno-direct-extern-access works in testing" >&5
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printf %s "checking if -mno-direct-extern-access works in testing... " >&6; }
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if test ${libc_cv_test_cc_cflags_mno_direct_extern_access+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) if { ac_try='${CC-cc} -Werror -mno-direct-extern-access -xc /dev/null -S -o /dev/null'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then :
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libc_cv_test_cc_cflags_mno_direct_extern_access=yes
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else case e in #(
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e) libc_cv_test_cc_cflags_mno_direct_extern_access=no
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;;
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esac
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_test_cc_cflags_mno_direct_extern_access" >&5
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printf "%s\n" "$libc_cv_test_cc_cflags_mno_direct_extern_access" >&6; }
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CC="$saved_CC"
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saved_CC="$CC"
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CC="$TEST_CC"
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if -fno-direct-access-external-data works in testing" >&5
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printf %s "checking if -fno-direct-access-external-data works in testing... " >&6; }
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if test ${libc_cv_test_cc_cflags_fno_direct_access_external_data+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) if { ac_try='${CC-cc} -Werror -fno-direct-access-external-data -xc /dev/null -S -o /dev/null'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then :
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libc_cv_test_cc_cflags_fno_direct_access_external_data=yes
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else case e in #(
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e) libc_cv_test_cc_cflags_fno_direct_access_external_data=no
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;;
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esac
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_test_cc_cflags_fno_direct_access_external_data" >&5
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printf "%s\n" "$libc_cv_test_cc_cflags_fno_direct_access_external_data" >&6; }
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CC="$saved_CC"
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if test $libc_cv_test_cc_cflags_mno_direct_extern_access = yes; then
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libc_cv_test_cc_cflags_no_direct_extern_access="-mno-direct-extern-access"
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elif test $libc_cv_test_cc_cflags_fno_direct_access_external_data = yes; then
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libc_cv_test_cc_cflags_no_direct_extern_access="-fno-direct-access-external-data"
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fi
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config_vars="$config_vars
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test-cc-cflags-no-direct-extern-access = $libc_cv_test_cc_cflags_no_direct_extern_access"
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if test "${libc_cv_cc_no_direct_extern_access}${libc_cv_test_cc_cflags_no_direct_extern_access}" = yes; then
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libc_cv_protected_data=no
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fi
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printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h
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