static_nss
profile
libc_cv_multidir
+enable_gsframe
+READELF_SFRAME
libc_cv_test_x86_have_amx_tile
test_enable_cet
libc_cv_test_cc_mprefer_vector_width
enable_cet
enable_scv
enable_fortify_source
+enable_sframe
with_cpu
'
ac_precious_vars='build_alias
Use -D_FORTIFY_SOURCE=[1|2|3] to control code
hardening, defaults to highest possible value
supported by the build compiler.
+ --disable-sframe Disable building with SFrame stack trace information
+ [default=yes if GNU as is 2.41 or older]
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
*) as_fn_error $? "Not a valid argument for --enable-fortify-source: \"$enable_fortify_source\"" "$LINENO" 5;;
esac
+# Check whether --enable-sframe was given.
+if test ${enable_sframe+y}
+then :
+ enableval=$enable_sframe; use_sframe=$enableval
+else case e in #(
+ e) use_sframe=notset ;;
+esac
+fi
+
+
# We keep the original values in `$config_*' and never modify them, so we
# can write them unchanged into config.make. Everything else uses
# $machine, $vendor, and $os, and changes them whenever convenient.
+# Glibc stacktracer supports SFrame v2 or newer
+libc_cv_readelf_version_ok=yes
+# SFrame is supported from 2.41 or higher
+for ac_prog in $READELF
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_READELF_SFRAME+y}
+then :
+ printf %s "(cached) " >&6
+else case e in #(
+ e) if test -n "$READELF_SFRAME"; then
+ ac_cv_prog_READELF_SFRAME="$READELF_SFRAME" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ case $as_dir in #(((
+ '') as_dir=./ ;;
+ */) ;;
+ *) as_dir=$as_dir/ ;;
+ esac
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+ ac_cv_prog_READELF_SFRAME="$ac_prog"
+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi ;;
+esac
+fi
+READELF_SFRAME=$ac_cv_prog_READELF_SFRAME
+if test -n "$READELF_SFRAME"; then
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $READELF_SFRAME" >&5
+printf "%s\n" "$READELF_SFRAME" >&6; }
+else
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+ test -n "$READELF_SFRAME" && break
+done
+
+if test -z "$READELF_SFRAME"; then
+ ac_verc_fail=yes
+else
+ # Found it, now check the version.
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking version of $READELF_SFRAME" >&5
+printf %s "checking version of $READELF_SFRAME... " >&6; }
+ ac_prog_version=`$READELF_SFRAME --version 2>&1 | sed -n 's/^.*GNU readelf.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
+ case $ac_prog_version in
+ '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+ 2.4[1-9]*|2.[5-9][0-9]*|[3-9].*|[1-9][0-9][0-9]*)
+ ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+ *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+
+ esac
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
+printf "%s\n" "$ac_prog_version" >&6; }
+fi
+if test $ac_verc_fail = yes; then
+ libc_cv_readelf_version_ok=no
+fi
+
+
+# Check the current toolchain for SFrame support
+if test $libc_cv_readelf_version_ok = yes; then
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for SFrame support" >&5
+printf %s "checking for SFrame support... " >&6; }
+if test ${libc_cv_default_sframe+y}
+then :
+ printf %s "(cached) " >&6
+else case e in #(
+ e) cat > conftest.c <<EOF
+int test_function(void)
+{
+ return 42;
+}
+EOF
+ libc_cv_default_sframe=no
+ if ${CC} -c conftest.c -o conftest.o -Wa,--gsframe >/dev/null 2>&1 && \
+ # Check if .sframe section is present and if version > 1
+ $READELF --sframe conftest.o | grep "SFRAME_VER" | grep -qv "VERSION_1"; then
+ libc_cv_default_sframe=yes
+ fi
+ rm -f conftest.c conftest.o
+ ;;
+esac
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_default_sframe" >&5
+printf "%s\n" "$libc_cv_default_sframe" >&6; }
+fi
+
+# Prevent enabling sframe on non-supporting toolchains
+enable_gsframe=no
+if test $use_sframe$libc_cv_default_sframe = yesyes || \
+ test $use_sframe$libc_cv_default_sframe = notsetyes; then
+ enable_gsframe=yes
+elif test $use_sframe = yes; then
+ { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in '$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in '$ac_pwd':" >&2;}
+as_fn_error $? "toolchain doesn't support SFrame v2 or higher
+See 'config.log' for more details" "$LINENO" 5; }
+fi
+
+
# Set the `multidir' variable by grabbing the variable from the compiler.
# We do it once and save the result in a generated makefile.
libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
*) AC_MSG_ERROR([Not a valid argument for --enable-fortify-source: "$enable_fortify_source"]);;
esac
+AC_ARG_ENABLE([sframe],
+ [AS_HELP_STRING([--disable-sframe],
+ [Disable building with SFrame stack trace information @<:@default=yes if GNU as is 2.41 or older@:>@])],
+ [use_sframe=$enableval],
+ [use_sframe=notset])
+
# We keep the original values in `$config_*' and never modify them, so we
# can write them unchanged into config.make. Everything else uses
# $machine, $vendor, and $os, and changes them whenever convenient.
AC_SUBST(test_enable_cet)
AC_SUBST(libc_cv_test_x86_have_amx_tile)
+# Glibc stacktracer supports SFrame v2 or newer
+libc_cv_readelf_version_ok=yes
+# SFrame is supported from 2.41 or higher
+AC_CHECK_PROG_VER(READELF_SFRAME, $READELF, --version,
+ [GNU readelf.* \([0-9][0-9]*\.[0-9.]*\)],
+ [2.4[1-9]*|2.[5-9][0-9]*|[3-9].*|[1-9][0-9][0-9]*],
+ libc_cv_readelf_version_ok=no)
+
+# Check the current toolchain for SFrame support
+if test $libc_cv_readelf_version_ok = yes; then
+ AC_CACHE_CHECK([for SFrame support], libc_cv_default_sframe,
+ [dnl
+cat > conftest.c <<EOF
+int test_function(void)
+{
+ return 42;
+}
+EOF
+ libc_cv_default_sframe=no
+ if ${CC} -c conftest.c -o conftest.o -Wa,--gsframe >/dev/null 2>&1 && \
+ # Check if .sframe section is present and if version > 1
+ $READELF --sframe conftest.o | grep "SFRAME_VER" | grep -qv "VERSION_1"; then
+ libc_cv_default_sframe=yes
+ fi
+ rm -f conftest.c conftest.o
+ ])
+fi
+
+# Prevent enabling sframe on non-supporting toolchains
+enable_gsframe=no
+if test $use_sframe$libc_cv_default_sframe = yesyes || \
+ test $use_sframe$libc_cv_default_sframe = notsetyes; then
+ enable_gsframe=yes
+elif test $use_sframe = yes; then
+ AC_MSG_FAILURE([toolchain doesn't support SFrame v2 or higher])
+fi
+AC_SUBST(enable_gsframe)
+
# Set the `multidir' variable by grabbing the variable from the compiler.
# We do it once and save the result in a generated makefile.
libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
projects / thirdparty / glibc.git / commitdiff
