fixes for compilation/linking problems on linux

.gitignore

@@ -29,3 +29,5 @@ config
 configure
 libtool
 .dirstamp
+/dispatch/module.modulemap
+/private/module.modulemap

configure.ac

@@ -432,6 +432,20 @@ AS_IF([test "x$have_mach" = "xtrue"], [
 ])
 AM_CONDITIONAL(HAVE_DARWIN_LD, [test "x$dispatch_cv_ld_darwin" == "xyes"])
 
+#
+# symlink platform-specific module.modulemap files
+#
+AS_CASE([$target_os],
+  [darwin*], [ dispatch_module_map_os=darwin ],
+  [ dispatch_module_map_os=generic ]
+)
+AC_CONFIG_COMMANDS([modulemaps], [
+      ln -fs $dispatch_module_map_os/module.modulemap $ac_top_srcdir/dispatch/module.modulemap
+      ln -fs $dispatch_module_map_os/module.modulemap $ac_top_srcdir/private/module.modulemap
+  ],
+  [dispatch_module_map_os="$dispatch_module_map_os"]
+)
+
 #
 # Temporary: some versions of clang do not mark __builtin_trap() as
 # __attribute__((__noreturn__)).  Detect and add if required.
@@ -449,6 +463,6 @@ AC_CONFIG_FILES([Makefile dispatch/Makefile man/Makefile os/Makefile private/Mak
 #
 # Generate testsuite links
 #
-AC_CONFIG_LINKS([tests/dispatch:$top_srcdir/private tests/leaks-wrapper:tests/leaks-wrapper.sh])
+AC_CONFIG_LINKS([tests/dispatch:$ac_top_srcdir/private tests/leaks-wrapper:tests/leaks-wrapper.sh])
 
 AC_OUTPUT

dispatch/Makefile.am

@@ -24,5 +24,5 @@ dispatch_HEADERS=	\
 	time.h
 
 if HAVE_SWIFT
-dispatch_HEADERS+=module.map
+dispatch_HEADERS+=module.modulemap
 endif

libdispatch.xcodeproj/project.pbxproj

@@ -662,8 +662,8 @@
 		C01866BD1C5973210040FC07 /* libdispatch.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libdispatch.a; sourceTree = BUILT_PRODUCTS_DIR; };
 		C01866BE1C59735B0040FC07 /* libdispatch-mp-static.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = "libdispatch-mp-static.xcconfig"; sourceTree = "<group>"; };
 		C01866BF1C5976C90040FC07 /* run-on-install.sh */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.script.sh; path = "run-on-install.sh"; sourceTree = "<group>"; };
-		C901445E1C73A7FE002638FC /* module.modulemap */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = "sourcecode.module-map"; path = module.modulemap; sourceTree = "<group>"; };
-		C90144641C73A845002638FC /* module.modulemap */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = "sourcecode.module-map"; path = module.modulemap; sourceTree = "<group>"; };
+		C901445E1C73A7FE002638FC /* module.modulemap */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = "sourcecode.module-map"; name = module.modulemap; path = darwin/module.modulemap; sourceTree = "<group>"; };
+		C90144641C73A845002638FC /* module.modulemap */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = "sourcecode.module-map"; name = module.modulemap; path = darwin/module.modulemap; sourceTree = "<group>"; };
 		C913AC0E143BD34800B78976 /* data_private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = data_private.h; sourceTree = "<group>"; tabWidth = 8; };
 		C927F35F10FD7F1000C5AB8B /* ddt.xcodeproj */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.pb-project"; name = ddt.xcodeproj; path = tools/ddt/ddt.xcodeproj; sourceTree = "<group>"; };
 		C96CE17A1CEB851600F4B8E6 /* dispatch_objc.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = dispatch_objc.m; sourceTree = "<group>"; };

private/generic/module.modulemap

@@ -0,0 +1,11 @@
+module DispatchPrivate [system] [extern_c] {
+	umbrella header "private.h"
+	exclude header "mach_private.h"
+	module * { export * }
+	export *
+}
+
+module DispatchIntrospectionPrivate [system] [extern_c] {
+	header "introspection_private.h"
+	export *
+}

src/Makefile.am

@@ -87,10 +87,11 @@ if BUILD_OWN_BLOCKS_RUNTIME
 libdispatch_la_SOURCES+= BlocksRuntime/data.c BlocksRuntime/runtime.c
 CBLOCKS_FLAGS+= -I$(top_srcdir)/src/BlocksRuntime
 CXXBLOCKS_FLAGS+= -I$(top_srcdir)/src/BlocksRuntime
+BLOCKS_RUNTIME_LIBS=-ldl
 endif
 
 libdispatch_la_LDFLAGS=-avoid-version
-libdispatch_la_LIBADD=$(KQUEUE_LIBS) $(PTHREAD_WORKQUEUE_LIBS) $(BSD_OVERLAY_LIBS)
+libdispatch_la_LIBADD=$(KQUEUE_LIBS) $(PTHREAD_WORKQUEUE_LIBS) $(BSD_OVERLAY_LIBS) $(BLOCKS_RUNTIME_LIBS)
 
 if HAVE_DARWIN_LD
 libdispatch_la_LDFLAGS+=-Wl,-compatibility_version,1 \
@@ -163,7 +164,7 @@ SWIFT_GEN_FILES=	\
 	$(SWIFT_OBJ_FILES:%=%.~partial.swiftdoc) \
 	$(SWIFT_OBJ_FILES:%=%.~partial.swiftdeps)
 
-SWIFTC_FLAGS = -Xcc -fmodule-map-file=$(abs_top_srcdir)/dispatch/module.map -I$(abs_top_srcdir) -Xcc -fblocks
+SWIFTC_FLAGS = -Xcc -fmodule-map-file=$(abs_top_srcdir)/dispatch/module.modulemap -I$(abs_top_srcdir) -Xcc -fblocks
 if DISPATCH_ENABLE_OPTIMIZATION
 SWIFTC_FLAGS+=-O
 endif

src/init.c

@@ -1197,7 +1197,7 @@ dispatch_source_type_readwrite_init(dispatch_source_t ds,
 	dispatch_queue_t q DISPATCH_UNUSED)
 {
 	ds->ds_is_level = true;
-#ifdef HAVE_DECL_NOTE_LOWAT
+#if HAVE_DECL_NOTE_LOWAT
 	// bypass kernel check for device kqueue support rdar://19004921
 	ds->ds_dkev->dk_kevent.fflags = NOTE_LOWAT;
 #endif

src/queue.c

@@ -2734,12 +2734,16 @@ _dispatch_block_create_with_voucher_and_priority(dispatch_block_flags_t flags,
 	bool assign = (flags & DISPATCH_BLOCK_ASSIGN_CURRENT);
 
 	if (assign && !(flags & DISPATCH_BLOCK_HAS_VOUCHER)) {
+#if OS_VOUCHER_ACTIVITY_SPI
 		voucher = VOUCHER_CURRENT;
+#endif
 		flags |= DISPATCH_BLOCK_HAS_VOUCHER;
 	}
+#if OS_VOUCHER_ACTIVITY_SPI
 	if (voucher == VOUCHER_CURRENT) {
 		voucher = _voucher_get();
 	}
+#endif
 	if (assign && !(flags & DISPATCH_BLOCK_HAS_PRIORITY)) {
 		pri = _dispatch_priority_propagate();
 		flags |= DISPATCH_BLOCK_HAS_PRIORITY;
@@ -5840,6 +5844,9 @@ _dispatch_main_queue_callback_4CF(
 void
 dispatch_main(void)
 {
+	dispatch_once_f(&_dispatch_root_queues_pred, NULL,
+		_dispatch_root_queues_init_once);
+
 #if HAVE_PTHREAD_MAIN_NP
 	if (pthread_main_np()) {
 #endif

src/shims/linux_stubs.h

@@ -47,8 +47,6 @@ typedef uint32_t voucher_activity_trace_id_t;
 
 typedef uint32_t voucher_activity_id_t;
 
-typedef uint32_t _voucher_activity_buffer_hook_t;;
-
 typedef uint32_t voucher_activity_flag_t;
 
 typedef struct { } mach_msg_header_t;

src/voucher.c

@@ -1560,6 +1560,7 @@ _voucher_init(void)
 {
 }
 
+#if OS_VOUCHER_ACTIVITY_SPI
 void*
 voucher_activity_get_metadata_buffer(size_t *length)
 {
@@ -1631,6 +1632,7 @@ voucher_activity_initialize_4libtrace(voucher_activity_hooks_t hooks)
 {
 	(void)hooks;
 }
+#endif // OS_VOUCHER_ACTIVITY_SPI
 
 size_t
 _voucher_debug(voucher_t v, char* buf, size_t bufsiz)

src/voucher_internal.h

@@ -90,8 +90,10 @@ voucher_get_mach_voucher(voucher_t voucher);
 void _voucher_init(void);
 void _voucher_atfork_child(void);
 void _voucher_activity_debug_channel_init(void);
+#if OS_VOUCHER_ACTIVITY_SPI
 void _voucher_activity_swap(firehose_activity_id_t old_id,
 		firehose_activity_id_t new_id);
+#endif
 void _voucher_xref_dispose(voucher_t voucher);
 void _voucher_dispose(voucher_t voucher);
 size_t _voucher_debug(voucher_t v, char* buf, size_t bufsiz);