diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/configure.in b/configure.in index d7b22f3a3b..4015722d5a 100644 --- a/configure.in +++ b/configure.in @@ -254,6 +254,24 @@ AC_ARG_ENABLE([all-warnings], []) AC_SUBST(all_warnings) +AC_ARG_ENABLE([multi-arch], + AC_HELP_STRING([--enable-multi-arch], + [enable single DSO with optimizations for multiple architectures]), + [multi_arch=$enableval], + [multi_arch=no]) +if test x"$multi_arch" = xyes; then + AC_DEFINE(USE_MULTIARCH) + multi_arch_d=/multiarch +fi +AC_SUBST(multi_arch) + +AC_ARG_ENABLE([experimental-malloc], + AC_HELP_STRING([--enable-experimental-malloc], + [enable experimental malloc features]), + [experimental_malloc=$enableval], + []) +AC_SUBST(experimental_malloc) + AC_CANONICAL_HOST # The way shlib-versions is used to generate soversions.mk uses a @@ -608,7 +626,7 @@ for b in $base ''; do test "$v" = / && continue for o in /$ostry ''; do test "$o" = / && continue - for m in $mach ''; do + for m in $multi_arch_d $mach ''; do for d in $add_ons_pfx ''; do for a in $add_ons_sfx ''; do if test -n "$m0$m0sub$b$v$o$m$msub"; then @@ -1157,6 +1175,29 @@ if test "x$libc_cv_asm_type_prefix" != xno; then AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix}) fi +# For the multi-arch option we need support in the assembler. +if test "$multi_arch" = yes; then + if test "x$libc_cv_asm_type_prefix" != xno; then +AC_CACHE_CHECK([for assembler gnu_indirect_function symbol type support], + libc_cv_asm_gnu_indirect_function, [dnl +cat > conftest.s <<EOF +.type foo,%gnu_indirect_function +EOF +if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; +then + libc_cv_asm_gnu_indirect_function=yes +else + libc_cv_asm_gnu_indirect_function=no +fi +rm -f conftest*]) + else + libc_cv_asm_gnu_indirect_function=no + fi + if test x"$libc_cv_asm_gnu_indirect_function" != xyes; then + AC_MSG_ERROR([--enable-multi-arch support requires assembler and linker support]) + fi +fi + AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, [cat > conftest.s <<EOF ${libc_cv_dot_text} |