Signed-off-by: Ulf Hermann <ulf.herm...@qt.io> --- ChangeLog | 5 +++++ configure.ac | 12 ++++++++++++ 2 files changed, 17 insertions(+)
diff --git a/ChangeLog b/ChangeLog index 01f88f3..fb7317c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2017-04-28 Ulf Hermann <ulf.herm...@qt.io> + + * configure.ac: Test if symbol versioning is supported and + automatically disable it if not. + 2017-04-27 Ulf Hermann <ulf.herm...@qt.io> * configure.ac: Check if the compiler supports diff --git a/configure.ac b/configure.ac index 0266a36..efcd3c0 100644 --- a/configure.ac +++ b/configure.ac @@ -376,6 +376,18 @@ AS_IF([test "x$enable_textrelcheck" != "xno"], AC_ARG_ENABLE([symbol-versioning], AS_HELP_STRING([--disable-symbol-versioning], [Disable symbol versioning in shared objects])) + +AC_CACHE_CHECK([whether symbol versioning is supported], ac_cv_symbol_versioning, [dnl +AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl +#define NEW_VERSION(name, version) \ + asm (".symver " #name "," #name "@@@" #version); +int foo(int x) { return x + 1; } +NEW_VERSION (foo, ELFUTILS_12.12) +])], ac_cv_symbol_versioning=yes, ac_cv_symbol_versioning=no)]) +if test "$ac_cv_symbol_versioning" = "no"; then + enable_symbol_versioning=no +fi + AM_CONDITIONAL(SYMBOL_VERSIONING, [test "x$enable_symbol_versioning" != "xno"]) AS_IF([test "x$enable_symbol_versioning" = "xno"], [AC_MSG_WARN([Disabling symbol versioning breaks ABI compatibility.]) -- 2.1.4