ref: 16945391c33f841306c02a0d7016a036352964aa
parent: 10a492847f2af49eb8842b17658c5063fae3689b
parent: 45e551b28fd0dceac3b42a10423a3358f0bb4317
author: John Koleszar <jkoleszar@google.com>
date: Thu Jul 26 13:09:48 EDT 2012
Merge "shared object on mac osx" into experimental
--- a/build/make/Makefile
+++ b/build/make/Makefile
@@ -249,10 +249,25 @@
$(if $(quiet),@echo " [LD] $$@")
$(qexec)$$(LD) -shared $$(LDFLAGS) \
-Wl,--no-undefined -Wl,-soname,$$(SONAME) \
- -Wl,--version-script,$$(SO_VERSION_SCRIPT) -o $$@ \
+ -Wl,--version-script,$$(EXPORTS_FILE) -o $$@ \
$$(filter %.o,$$^) $$(extralibs)
endef
+define dl_template
+# Not using a pattern rule here because we don't want to generate empty
+# archives when they are listed as a dependency in files not responsible
+# for creating them.
+$(1):
+ $(if $(quiet),@echo " [LD] $$@")
+ $(qexec)$$(LD) -dynamiclib $$(LDFLAGS) \
+ -exported_symbols_list $$(EXPORTS_FILE) \
+ -Wl,-headerpad_max_install_names,-compatibility_version,1.0,-current_version,$$(VERSION_MAJOR) \
+ -o $$@ \
+ $$(filter %.o,$$^) $$(extralibs)
+endef
+
+
+
define lipo_lib_template
$(1): $(addsuffix /$(1),$(FAT_ARCHS))
$(if $(quiet),@echo " [LIPO] $$@")
@@ -317,6 +332,7 @@
@touch $@
$(foreach lib,$(filter %_g.a,$(LIBS)),$(eval $(call archive_template,$(lib))))
$(foreach lib,$(filter %so.$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH),$(LIBS)),$(eval $(call so_template,$(lib))))
+$(foreach lib,$(filter %$(VERSION_MAJOR).dylib,$(LIBS)),$(eval $(call dl_template,$(lib))))
INSTALL-LIBS=$(call cond_enabled,CONFIG_INSTALL_LIBS,INSTALL-LIBS)
ifeq ($(MAKECMDGOALS),dist)
--- a/configure
+++ b/configure
@@ -453,12 +453,6 @@
}
process_detect() {- if enabled shared; then
- # Can only build shared libs on a subset of platforms. Doing this check
- # here rather than at option parse time because the target auto-detect
- # magic happens after the command line has been parsed.
- enabled linux || enabled win32 || enabled win64 || die "--enable-shared only supported on ELF for now"
- fi
if [ -z "$CC" ]; then
echo "Bypassing toolchain for environment detection."
enable external_build
--- a/examples.mk
+++ b/examples.mk
@@ -162,7 +162,8 @@
# Instantiate linker template for all examples.
CODEC_LIB=$(if $(CONFIG_DEBUG_LIBS),vpx_g,vpx)
-CODEC_LIB_SUF=$(if $(CONFIG_SHARED),.so,.a)
+SHARED_LIB_SUF=$(if $(filter darwin%,$(TGT_OS)),.dylib,.so)
+CODEC_LIB_SUF=$(if $(CONFIG_SHARED),$(SHARED_LIB_SUF),.a)
$(foreach bin,$(BINS-yes),\
$(if $(BUILD_OBJS),$(eval $(bin):\
$(LIB_PATH)/lib$(CODEC_LIB)$(CODEC_LIB_SUF)))\
--- a/libs.mk
+++ b/libs.mk
@@ -193,17 +193,29 @@
LIBS-$(if $(BUILD_LIBVPX),$(CONFIG_STATIC)) += $(BUILD_PFX)libvpx.a $(BUILD_PFX)libvpx_g.a
$(BUILD_PFX)libvpx_g.a: $(LIBVPX_OBJS)
+
BUILD_LIBVPX_SO := $(if $(BUILD_LIBVPX),$(CONFIG_SHARED))
+
+ifeq ($(filter darwin%,$(TGT_OS)),$(TGT_OS))
+LIBVPX_SO := libvpx.$(VERSION_MAJOR).dylib
+EXPORT_FILE := libvpx.syms
+LIBVPX_SO_SYMLINKS := $(addprefix $(LIBSUBDIR)/, \
+ libvpx.dylib )
+else
LIBVPX_SO := libvpx.so.$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH)
+EXPORT_FILE := libvpx.ver
+SYM_LINK := libvpx.so
+LIBVPX_SO_SYMLINKS := $(addprefix $(LIBSUBDIR)/, \
+ libvpx.so libvpx.so.$(VERSION_MAJOR) \
+ libvpx.so.$(VERSION_MAJOR).$(VERSION_MINOR))
+endif
+
LIBS-$(BUILD_LIBVPX_SO) += $(BUILD_PFX)$(LIBVPX_SO)\
$(notdir $(LIBVPX_SO_SYMLINKS))
-$(BUILD_PFX)$(LIBVPX_SO): $(LIBVPX_OBJS) libvpx.ver
+$(BUILD_PFX)$(LIBVPX_SO): $(LIBVPX_OBJS) $(EXPORT_FILE)
$(BUILD_PFX)$(LIBVPX_SO): extralibs += -lm
$(BUILD_PFX)$(LIBVPX_SO): SONAME = libvpx.so.$(VERSION_MAJOR)
-$(BUILD_PFX)$(LIBVPX_SO): SO_VERSION_SCRIPT = libvpx.ver
-LIBVPX_SO_SYMLINKS := $(addprefix $(LIBSUBDIR)/, \
- libvpx.so libvpx.so.$(VERSION_MAJOR) \
- libvpx.so.$(VERSION_MAJOR).$(VERSION_MINOR))
+$(BUILD_PFX)$(LIBVPX_SO): EXPORTS_FILE = $(EXPORT_FILE)
libvpx.ver: $(call enabled,CODEC_EXPORTS)
@echo " [CREATE] $@"
@@ -212,10 +224,15 @@
$(qexec)echo "local: *; };" >> $@
CLEAN-OBJS += libvpx.ver
+libvpx.syms: $(call enabled,CODEC_EXPORTS)
+ @echo " [CREATE] $@"
+ $(qexec)awk '{print "_"$$2}' $^ >$@+CLEAN-OBJS += libvpx.syms
+
define libvpx_symlink_template
$(1): $(2)
- @echo " [LN] $$@"
- $(qexec)ln -sf $(LIBVPX_SO) $$@
+ @echo " [LN] $(2) $$@"
+ $(qexec)ln -sf $(2) $$@
endef
$(eval $(call libvpx_symlink_template,\
@@ -225,8 +242,10 @@
$(addprefix $(DIST_DIR)/,$(LIBVPX_SO_SYMLINKS)),\
$(DIST_DIR)/$(LIBSUBDIR)/$(LIBVPX_SO)))
-INSTALL-LIBS-$(CONFIG_SHARED) += $(LIBVPX_SO_SYMLINKS)
-INSTALL-LIBS-$(CONFIG_SHARED) += $(LIBSUBDIR)/$(LIBVPX_SO)
+
+INSTALL-LIBS-$(BUILD_LIBVPX_SO) += $(LIBVPX_SO_SYMLINKS)
+INSTALL-LIBS-$(BUILD_LIBVPX_SO) += $(LIBSUBDIR)/$(LIBVPX_SO)
+
LIBS-$(BUILD_LIBVPX) += vpx.pc
vpx.pc: config.mk libs.mk