diff options
Diffstat (limited to 'libgomp/acinclude.m4')
| -rw-r--r-- | libgomp/acinclude.m4 | 59 |
1 files changed, 51 insertions, 8 deletions
diff --git a/libgomp/acinclude.m4 b/libgomp/acinclude.m4 index 0c671d4..8d6d0e5 100644 --- a/libgomp/acinclude.m4 +++ b/libgomp/acinclude.m4 @@ -223,16 +223,42 @@ AC_DEFUN([LIBGOMP_ENABLE_SYMVERS], [ LIBGOMP_ENABLE(symvers,yes,[=STYLE], [enables symbol versioning of the shared library], - [permit yes|no|gnu]) + [permit yes|no|gnu|sun]) # If we never went through the LIBGOMP_CHECK_LINKER_FEATURES macro, then we # don't know enough about $LD to do tricks... AC_REQUIRE([LIBGOMP_CHECK_LINKER_FEATURES]) # FIXME The following test is too strict, in theory. -if test $enable_shared = no || - test "x$LD" = x || - test x$libgomp_gnu_ld_version = x; then +if test $enable_shared = no || test "x$LD" = x; then enable_symvers=no +else + if test $with_gnu_ld = yes ; then + enable_symvers=gnu + else + case ${target_os} in + # Sun symbol versioning exists since Solaris 2.5. + solaris2.[[5-9]]* | solaris2.1[[0-9]]*) + enable_symvers=sun ;; + *) + enable_symvers=no ;; + esac + fi +fi + +# Check if 'sun' was requested on non-Solaris 2 platforms. +if test x$enable_symvers = xsun ; then + case ${target_os} in + solaris2*) + # All fine. + ;; + *) + # Unlikely to work. + AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) + AC_MSG_WARN([=== you are not targetting Solaris 2.]) + AC_MSG_WARN([=== Symbol versioning will be disabled.]) + enable_symvers=no + ;; + esac fi # Check to see if libgcc_s exists, indicating that shared libgcc is possible. @@ -269,10 +295,8 @@ libgomp_min_gnu_ld_version=21400 # Check to see if unspecified "yes" value can win, given results above. # Change "yes" into either "no" or a style name. -if test $enable_symvers = yes; then - if test $with_gnu_ld = yes && - test $libgomp_shared_libgcc = yes; - then +if test $enable_symvers != no && test $libgomp_shared_libgcc = yes; then + if test $with_gnu_ld = yes; then if test $libgomp_gnu_ld_version -ge $libgomp_min_gnu_ld_version ; then enable_symvers=gnu elif test $libgomp_ld_is_gold = yes ; then @@ -295,6 +319,8 @@ if test $enable_symvers = yes; then enable_symvers=no fi fi + elif test $enable_symvers = sun; then + : All interesting versions of Sun ld support sun style symbol versioning. else # just fail for now AC_MSG_WARN([=== You have requested some kind of symbol versioning, but]) @@ -316,5 +342,22 @@ if test $libgomp_cv_have_as_symver_directive = yes; then fi AM_CONDITIONAL(LIBGOMP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no) +AM_CONDITIONAL(LIBGOMP_BUILD_VERSIONED_SHLIB_GNU, test $enable_symvers = gnu) +AM_CONDITIONAL(LIBGOMP_BUILD_VERSIONED_SHLIB_SUN, test $enable_symvers = sun) AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) + +if test $enable_symvers != no ; then + case ${target_os} in + # The Solaris 2 runtime linker doesn't support the GNU extension of + # binding the same symbol to different versions + solaris2*) + symvers_renaming=no ;; + # Other platforms with GNU symbol versioning (GNU/Linux, more?) do. + *) + AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1, + [Define to 1 if the target runtime linker supports binding the same symbol to different versions.]) + symvers_renaming=yes ;; + esac +fi +AM_CONDITIONAL(LIBGOMP_BUILD_VERSIONED_SHLIB_SOL2, test $symvers_renaming = no) ]) |