diff options
| -rwxr-xr-x | configure | 138 | ||||
| -rw-r--r-- | configure.in | 121 |
2 files changed, 180 insertions, 79 deletions
@@ -1,5 +1,5 @@ #! /bin/sh -# From configure.in c1dca64. +# From configure.in 95caa24. # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.69. # @@ -5003,6 +5003,7 @@ CFLAGS="$OLD_CFLAGS" $as_echo_n "checking how to make shared objects... " >&6; } OLD_CFLAGS="$CFLAGS" compiler_shared_objects="" +compiler_supports_shared_objects="no" if test "$compiler_supports_pic" = "yes" ; then my_shared_test_flags="$CFLAGS -fPIC" fi @@ -5022,6 +5023,7 @@ _ACEOF if ac_fn_c_try_link "$LINENO"; then : compiler_shared_objects="-shared" + compiler_supports_shared_objects="yes" fi @@ -5043,12 +5045,12 @@ _ACEOF if ac_fn_c_try_link "$LINENO"; then : compiler_shared_objects="-nostart" + compiler_supports_shared_objects="yes" fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext -my_shared_test_flags="" CFLAGS="$OLD_CFLAGS" if test "$compiler_supports_shared_objects" = "no" ; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: not supported" >&5 @@ -5057,77 +5059,134 @@ $as_echo "not supported" >&6; } $as_echo "$as_me: compiler is unable to generate shared objects, disabled plugins (optional)" >&6;} WITH_PLUGINS="no" else - { $as_echo "$as_me:${as_lineno-$LINENO}: result: $compiler_shared_objects" >&5 -$as_echo "$compiler_shared_objects" >&6; } + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $compiler_shared_objects $compiler_supports_shared_objects" >&5 +$as_echo "$compiler_shared_objects $compiler_supports_shared_objects" >&6; } SOFLAGS="$SOFLAGS $compiler_shared_objects" -# -# shared objects need position independent code; some platforms emit -# it always, others need -fPIC -# -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC needs -fPIC for shared objects" >&5 + # + # On certain platforms, undefined references on shared libraries won't be checked + # unless explicitly required with the --no-undefined linker option + # + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC needs -Wl,--no-undefined to check for undefined references in shared objects" >&5 +$as_echo_n "checking whether $CC needs -Wl,--no-undefined to check for undefined references in shared objects... " >&6; } + OLD_CFLAGS="$CFLAGS" + CFLAGS="$SOFLAGS" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + void foo(void) { + foobar(); + } + +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + + CFLAGS="$SOFLAGS -Wl,--no-undefined" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + + int bar = 0; + + int foo(void) { + return bar; + } + +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + SOFLAGS="$SOFLAGS -Wl,--no-undefined" + +else + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported (undefined references check will be ignored)" >&5 +$as_echo "unsupported (undefined references check will be ignored)" >&6; } + + +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + +else + + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + + +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext + CFLAGS="$OLD_CFLAGS" + + # + # shared objects need position independent code; some platforms emit + # it always, others need -fPIC + # + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC needs -fPIC for shared objects" >&5 $as_echo_n "checking whether $CC needs -fPIC for shared objects... " >&6; } -OLD_CFLAGS="$CFLAGS" -CFLAGS="$CFLAGS $SOFLAGS" -WITH_PLUGINS="yes" -cat confdefs.h - <<_ACEOF >conftest.$ac_ext + OLD_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $SOFLAGS" + WITH_PLUGINS="yes" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ - int bar = 0; + int bar = 0; - int foo(void) - { - return bar; - } + int foo(void) + { + return bar; + } _ACEOF if ac_fn_c_try_link "$LINENO"; then : - { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } - CFLAGS="$OLD_CFLAGS" + CFLAGS="$OLD_CFLAGS" else - if test "$compiler_supports_pic" = "yes" ; then - # Verify if -shared really fails due to lack of -fPIC or something else - CFLAGS="$CFLAGS -fPIC" - cat confdefs.h - <<_ACEOF >conftest.$ac_ext + if test "$compiler_supports_pic" = "yes" ; then + # Verify if -shared really fails due to lack of -fPIC or something else + CFLAGS="$CFLAGS -fPIC" + cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ - int bar = 0; + int bar = 0; - int foo(void) - { - return bar; - } + int foo(void) + { + return bar; + } _ACEOF if ac_fn_c_try_link "$LINENO"; then : - { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 $as_echo "yes" >&6; } - CFLAGS="$OLD_CFLAGS -fPIC" + CFLAGS="$OLD_CFLAGS -fPIC" else - { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, but fails for another reason" >&5 + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, but fails for another reason" >&5 $as_echo "no, but fails for another reason" >&6; } - as_fn_error $? "compiler is unable to compile shared objects for an unhandled reason, please report this with attached config.log... stopping" "$LINENO" 5 + as_fn_error $? "compiler is unable to compile shared objects for an unhandled reason, please report this with attached config.log... stopping" "$LINENO" 5 fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext - else - # Disable compilation of plugins (optional), so 'make all' does not fail - { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes, but unsupported" >&5 + else + # Disable compilation of plugins (optional), so 'make all' does not fail + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes, but unsupported" >&5 $as_echo "yes, but unsupported" >&6; } - { $as_echo "$as_me:${as_lineno-$LINENO}: compiler is unable to generate position independent code, disabled plugins (optional)" >&5 + { $as_echo "$as_me:${as_lineno-$LINENO}: compiler is unable to generate position independent code, disabled plugins (optional)" >&5 $as_echo "$as_me: compiler is unable to generate position independent code, disabled plugins (optional)" >&6;} - WITH_PLUGINS="no" - fi + WITH_PLUGINS="no" + fi fi @@ -5135,6 +5194,7 @@ rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext fi +my_shared_test_flags="" diff --git a/configure.in b/configure.in index d9353f51c..486390eaa 100644 --- a/configure.in +++ b/configure.in @@ -550,6 +550,7 @@ CFLAGS="$OLD_CFLAGS" 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="$CFLAGS -fPIC" fi @@ -566,6 +567,7 @@ AC_LINK_IFELSE( ])], [ compiler_shared_objects="-shared" + compiler_supports_shared_objects="yes" ] ) # BeOS specific @@ -581,72 +583,111 @@ AC_LINK_IFELSE( ])], [ compiler_shared_objects="-nostart" + compiler_supports_shared_objects="yes" ] ) -my_shared_test_flags="" CFLAGS="$OLD_CFLAGS" if test "$compiler_supports_shared_objects" = "no" ; then AC_MSG_RESULT([not supported]) AC_MSG_NOTICE([compiler is unable to generate shared objects, disabled plugins (optional)]) WITH_PLUGINS="no" else - AC_MSG_RESULT([$compiler_shared_objects]) + AC_MSG_RESULT([$compiler_shared_objects $compiler_supports_shared_objects]) SOFLAGS="$SOFLAGS $compiler_shared_objects" AC_SUBST([SOFLAGS]) -# -# 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" + # + # On certain platforms, undefined references on shared libraries won't be checked + # unless explicitly required with the --no-undefined linker option + # + AC_MSG_CHECKING([whether $CC needs -Wl,--no-undefined to check for undefined references in shared objects]) + OLD_CFLAGS="$CFLAGS" + CFLAGS="$SOFLAGS" + AC_LINK_IFELSE( + [AC_LANG_SOURCE([ + void foo(void) { + foobar(); + } + ])], + [ + CFLAGS="$SOFLAGS -Wl,--no-undefined" AC_LINK_IFELSE( [AC_LANG_SOURCE([ int bar = 0; - int foo(void) - { + int foo(void) { return bar; } ])], [ AC_MSG_RESULT([yes]) - CFLAGS="$OLD_CFLAGS -fPIC" + SOFLAGS="$SOFLAGS -Wl,--no-undefined" ], [ - 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]) + AC_MSG_RESULT([unsupported (undefined references check will be ignored)]) ] ) - 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 - ] -) + ], + [ + AC_MSG_RESULT([no]) + ] + ) + 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]) |