diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 90 |
1 files changed, 88 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 0b0d887..4480ae8 100644 --- a/configure.ac +++ b/configure.ac @@ -440,6 +440,12 @@ case "$enable_fortify_source" in *) AC_MSG_ERROR([Not a valid argument for --enable-fortify-source: "$enable_fortify_source"]);; esac +AC_ARG_ENABLE([sframe], + [AS_HELP_STRING([--enable-sframe], + [Enable building with SFrame support @<:@default=no@:>@])], + [use_sframe=$enableval], + [use_sframe=no]) + # We keep the original values in `$config_*' and never modify them, so we # can write them unchanged into config.make. Everything else uses # $machine, $vendor, and $os, and changes them whenever convenient. @@ -483,6 +489,9 @@ with_fp_cond=1 # A preconfigure script may define another name to TLS descriptor variant mtls_descriptor=gnu2 +# A preconfigure script may define another name to traditional TLS variant +mtls_traditional=gnu + dnl Let sysdeps/*/preconfigure act here. LIBC_PRECONFIGURE([$srcdir], [for sysdeps]) @@ -522,7 +531,7 @@ AC_PROG_LN_S LIBC_PROG_BINUTILS -# Accept binutils 2.25 or newer. +# Accept binutils 2.39 or newer. libc_cv_with_lld=no case $($LD --version) in "GNU gold"*) @@ -543,7 +552,7 @@ case $($LD --version) in *) 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]*], + [2.[1-9][0-9][0-9]*|2.39*|2.[4-9][0-9]*|[3-9].*|[1-9][0-9]*], LD=: critic_missing="$critic_missing GNU ld") ;; esac @@ -1401,6 +1410,16 @@ LIBC_TRY_TEST_CC_COMMAND([for tls descriptor support], LIBC_CONFIG_VAR([have-test-mtls-descriptor], [$libc_cv_test_mtls_descriptor]) +dnl Check if TEST_CC support traditional tls. +LIBC_TRY_TEST_CC_COMMAND([for traditional tls support], + [$conftest_code], + [-fPIC -mtls-dialect=$mtls_traditional -nostdlib -nostartfiles -shared], + libc_cv_test_mtls_traditional, + [libc_cv_test_mtls_traditional=$mtls_traditional], + [libc_cv_test_mtls_traditional=no]) +LIBC_CONFIG_VAR([have-test-mtls-traditional], + [$libc_cv_test_mtls_traditional]) + dnl clang emits an warning for a double alias redirection, to warn the dnl original symbol is sed even when weak definition overrides it. dnl It is a usual pattern for weak_alias, where multiple alias point to @@ -1575,6 +1594,29 @@ LIBC_CONFIG_VAR([cc-option-wimplicit-fallthrough], [$libc_cv_cc_wimplicit_fallthrough]) AC_SUBST(libc_cv_test_cc_wimplicit_fallthrough) +LIBC_TRY_CC_AND_TEST_CC_OPTION([for -Wfree-labels], + [-Werror -Wfree-labels], + libc_cv_cc_wfree_labels, + [libc_cv_cc_wfree_labels=-Wfree-labels], + [libc_cv_cc_wfree_labels=], + libc_cv_test_cc_wfree_labels, + [libc_cv_test_cc_wfree_labels=-Wfree-labels], + [libc_cv_test_cc_wfree_labels=]) +LIBC_CONFIG_VAR([cc-option-wfree-labels], [$libc_cv_cc_wfree_labels]) +AC_SUBST(libc_cv_test_cc_wfree_labels) + +LIBC_TRY_CC_AND_TEST_CC_OPTION([for -Wmissing-parameter-name], + [-Werror -Wmissing-parameter-name], + libc_cv_cc_wmissing_parameter_name, + [libc_cv_cc_wmissing_parameter_name=-Wmissing-parameter-name], + [libc_cv_cc_wmissing_parameter_name=], + libc_cv_test_cc_wmissing_parameter_name, + [libc_cv_test_cc_wmissing_parameter_name=-Wmissing-parameter-name], + [libc_cv_test_cc_wmissing_parameter_name=]) +LIBC_CONFIG_VAR([cc-option-wmissing-parameter-name], + [$libc_cv_cc_wmissing_parameter_name]) +AC_SUBST(libc_cv_test_cc_wmissing_parameter_name) + conftest_code=" void bar (void (*callback) (void)); int foo (void) @@ -2079,6 +2121,50 @@ AC_SUBST(libc_cv_test_cc_mprefer_vector_width) AC_SUBST(test_enable_cet) AC_SUBST(libc_cv_test_x86_have_amx_tile) +enable_gsframe=no +if test $use_sframe = yes; then + # SFrame requires to be explicit enabled by the architecture + if test -z $libc_cv_support_sframe; then + AC_MSG_FAILURE([the architecture doesn't support SFrame]) + fi + + # SFrame requires binutils 2.45 or higher. + libc_cv_sframe_readelf_version=yes + AC_CHECK_PROG_VER(READELF, $READELF, --version, + [GNU readelf.* \([0-9][0-9]*\.[0-9.]*\)], + [2.4[5-9]*|2.[5-9][0-9]*|2.[1-9][0-9][0-9]*|[3-9]*|[1-9][0-9]*], + libc_cv_sframe_readelf_version=no) + if test $libc_cv_sframe_readelf_version = no; then + AC_MSG_FAILURE([binutils too old to enable SFrame]) + fi + + # Check if the current toolchain supports SFrame + 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 + ]) + + if test $libc_cv_default_sframe = no; then + AC_MSG_FAILURE([toolchain doesn't support SFrame v2 or higher]) + fi + + enable_gsframe=yes + AC_DEFINE(ENABLE_SFRAME) +fi +LIBC_CONFIG_VAR([enable-gsframe], [$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` |