diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 112 |
1 files changed, 49 insertions, 63 deletions
diff --git a/configure.in b/configure.in index 9497ce6bc..5bb0dff65 100644 --- a/configure.in +++ b/configure.in @@ -256,7 +256,7 @@ AC_ARG_ENABLE( AC_HELP_STRING( [--enable-lto], [ - Enables or Disables Linktime Code Optimization (LTO is enabled by default) + Enables or Disables Linktime Code Optimization (LTO is disabled by default) ] ), [ @@ -267,7 +267,7 @@ AC_ARG_ENABLE( *) AC_MSG_ERROR([[invalid argument --enable-lto=$disableval... stopping]]);; esac ], - [enable_lto="yes"] + [enable_lto="no"] ) @@ -485,9 +485,9 @@ AC_PATH_PROG(AR, ar) AC_LANG([C]) -CFLAGS="$CFLAGS -pipe -ffast-math -Wall -Wextra -Wno-sign-compare" +CFLAGS="$CFLAGS -pipe -ffast-math -fvisibility=hidden -Wall -Wextra -Wno-sign-compare" CPPFLAGS="$CPPFLAGS -I../common" - +LDFLAGS="$LDFLAGS" AC_C_BIGENDIAN( [AC_MSG_ERROR([[bigendian is not supported... stopping]])], @@ -589,6 +589,32 @@ AC_RUN_IFELSE( ] ) +# +# Check if the linker supports/accepts -rdynamic +# Generally only needed by the ELF linker, in order to produce backtraces. +# On non-ELF platforms, some compilers (i.e. gcc < 5 and clang on OSX) are able to ignore it, others will error out. +# +OLD_LDFLAGS="$LDFLAGS" +LDFLAGS="$LDFLAGS -rdynamic" +AC_MSG_CHECKING([whether $CC accepts -rdynamic]) +AC_LINK_IFELSE( + [AC_LANG_SOURCE([ + int main(int argc, char **argv) + { + return 0; + } + ])], + [ + AC_MSG_RESULT([yes]) + ], + [ + AC_MSG_RESULT([no]) + LDFLAGS="$OLD_LDFLAGS" + ], + [ + AC_MSG_RESULT([guessing no]) + ] +) # # LTO Support test @@ -831,11 +857,10 @@ AC_COMPILE_IFELSE( [AC_LANG_SOURCE([int foo;])], [ AC_MSG_RESULT([yes]) - compiler_supports_pic="yes" + SOFLAGS="$SOFLAGS -fPIC" ], [ AC_MSG_RESULT([no]) - compiler_supports_pic="no" ] ) CFLAGS="$OLD_CFLAGS" @@ -847,9 +872,7 @@ AC_MSG_CHECKING([how to make shared objects]) OLD_CFLAGS="$CFLAGS" compiler_shared_objects="" compiler_supports_shared_objects="no" -if test "$compiler_supports_pic" = "yes" ; then - my_shared_test_flags="$CFLAGS -fPIC" -fi +my_shared_test_flags="$CFLAGS $SOFLAGS" # default CFLAGS="$my_shared_test_flags -shared" AC_LINK_IFELSE( @@ -890,7 +913,7 @@ if test "$compiler_supports_shared_objects" = "no" ; then else AC_MSG_RESULT([$compiler_shared_objects $compiler_supports_shared_objects]) SOFLAGS="$SOFLAGS $compiler_shared_objects" - AC_SUBST([SOFLAGS]) + WITH_PLUGINS="yes" # # On certain platforms, undefined references on shared libraries won't be checked @@ -929,62 +952,10 @@ else ] ) CFLAGS="$OLD_CFLAGS" - - # - # shared objects need position independent code; some platforms emit - # it always, others need -fPIC - # - AC_MSG_CHECKING([whether $CC needs -fPIC for shared objects]) - OLD_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $SOFLAGS" - WITH_PLUGINS="yes" - AC_LINK_IFELSE( - [AC_LANG_SOURCE([ - int bar = 0; - - int foo(void) - { - return bar; - } - ])], - [ - AC_MSG_RESULT([no]) - CFLAGS="$OLD_CFLAGS" - ], - [ - if test "$compiler_supports_pic" = "yes" ; then - # Verify if -shared really fails due to lack of -fPIC or something else - CFLAGS="$CFLAGS -fPIC" - AC_LINK_IFELSE( - [AC_LANG_SOURCE([ - int bar = 0; - - int foo(void) - { - return bar; - } - ])], - [ - AC_MSG_RESULT([yes]) - CFLAGS="$OLD_CFLAGS -fPIC" - ], - [ - AC_MSG_RESULT([no, but fails for another reason]) - AC_MSG_ERROR([compiler is unable to compile shared objects for an unhandled reason, please report this with attached config.log... stopping]) - ] - ) - else - # Disable compilation of plugins (optional), so 'make all' does not fail - AC_MSG_RESULT([yes, but unsupported]) - AC_MSG_NOTICE([compiler is unable to generate position independent code, disabled plugins (optional)]) - WITH_PLUGINS="no" - fi - ] - ) - fi my_shared_test_flags="" AC_SUBST([WITH_PLUGINS]) +AC_SUBST([SOFLAGS]) # @@ -1267,6 +1238,21 @@ AC_SEARCH_LIBS([pthread_attr_destroy], [pthread], [], [AC_MSG_ERROR([pthread lib AC_SEARCH_LIBS([pthread_cancel], [pthread], [], [AC_MSG_ERROR([pthread library not found or incompatible])]) AC_SEARCH_LIBS([pthread_join], [pthread], [], [AC_MSG_ERROR([pthread library not found or incompatible])]) +# execinfo (backtrace) +AC_CHECK_HEADERS([execinfo.h], + [ + AC_SEARCH_LIBS([backtrace], + [execinfo], + [ + CFLAGS="$CFLAGS -DHAVE_EXECINFO" + ], + [ + ] + ) + ], + [ + ] +) # # MySQL library |