finetune multilib support a lot, cleanup eglibc/glibc Makefiles while there

6 files changed, 252 insertions, 108 deletions

diff --git a/toolchain/eglibc/Makefile b/toolchain/eglibc/Makefile
index 7f369d3ed..b165d1ba7 100644
--- a/toolchain/eglibc/Makefile
+++ b/toolchain/eglibc/Makefile
@@ -4,53 +4,55 @@
 include $(TOPDIR)/rules.mk
 include ../rules.mk
 include Makefile.inc
+include Makefile.multilib
 include ${TOPDIR}/mk/buildhlp.mk
 
 ifneq ($(ADK_DEBUG),)
 TARGET_CFLAGS+=		-O2
 endif
 # ssp partially supported
-TARGET_CFLAGS:= $(filter-out -fstack-protector,$(TARGET_CFLAGS))
-
-EGLIBC_CONFOPTS:=	--build=$(GNU_HOST_NAME) \
-			--without-cvs \
-			--disable-profile \
-			--disable-debug \
-			--enable-kernel=2.6.0 \
-			--without-gd \
-			--with-__thread \
-			--with-tls \
-			--enable-add-ons \
-			$(NLS)
-
-EGLIBC_ENV:=		PATH='${TARGET_PATH}' \
-			BUILD_CC=${CC_FOR_BUILD} \
-			CFLAGS="$(TARGET_CFLAGS)" \
-			CC=${REAL_GNU_TARGET_NAME}-gcc \
-			CXX=${REAL_GNU_TARGET_NAME}-g++ \
-			AR=${REAL_GNU_TARGET_NAME}-ar \
-			RANLIB=${REAL_GNU_TARGET_NAME}-ranlib \
-			libc_cv_cc_with_libunwind=no \
-			libc_cv_forced_unwind=yes \
-			libc_cv_c_cleanup=yes \
-			libc_cv_gnu99_inline=yes \
-			libc_cv_initfini_array=yes \
-			libc_cv_slibdir="/lib"
+TARGET_CFLAGS:= 	$(filter-out -fstack-protector,$(TARGET_CFLAGS))
 
 ifeq ($(ADK_TARGET_NO_FPU),y)
 EGLIBC_CONFOPTS+=       --without-fp
 endif
 
 EGLIBC_BUILD_DIR_INITIAL:=	${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)-headers
-EGLIBC_BUILD_DIR_INITIAL32:=	${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)-headers32
 EGLIBC_BUILD_DIR_FINAL:=	${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)-final
-EGLIBC_BUILD_DIR_FINAL32:=	${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)-final32
 
 ifeq ($(ADK_TARGET_WITH_MULTILIB),y)
-$(WRKBUILD)/.headers_configure: $(WRKBUILD)/.headers_configure32
+$(WRKBUILD)/.headers_configure: 
+	for abi in $(TABI); do \
+		mkdir -p $(EGLIBC_BUILD_DIR_INITIAL)-$${abi/*:/}; \
+		(cd ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION); \
+			ln -sf ../ports ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)/libc); \
+		$(CP) ${TOPDIR}/toolchain/eglibc/eglibc.config \
+			$(EGLIBC_BUILD_DIR_INITIAL)-$${abi/*:/}/option-groups.config; \
+		(cd $(EGLIBC_BUILD_DIR_INITIAL)-$${abi/*:/}; \
+			${EGLIBC_ENV} \
+			CC="${REAL_GNU_TARGET_NAME}-gcc -m$${abi/*:/}" \
+			$(WRKBUILD)/libc/configure \
+				--prefix=$(STAGING_TARGET_DIR)-$${abi/*:/}/usr \
+				--with-headers=$(STAGING_TARGET_DIR)-$${abi/*:/}/usr/include \
+				--host=$${abi/:*/} \
+				${EGLIBC_CONFOPTS} \
+		); \
+	done
+	touch $@
+
+$(WRKBUILD)/.headers: $(WRKBUILD)/.headers_configure
+	for abi in $(TABI); do \
+		(cd $(EGLIBC_BUILD_DIR_INITIAL)-$${abi/*:/}; \
+			${EGLIBC_ENV} \
+			CC="${REAL_GNU_TARGET_NAME}-gcc -m$${abi/*:/}" \
+			$(MAKE) install-headers install-bootstrap-headers=yes cross-compiling=yes \
+		); \
+		touch $(STAGING_TARGET_DIR)-$${abi/*:/}/usr/include/gnu/stubs.h; \
+		touch $(STAGING_TARGET_DIR)-$${abi/*:/}/usr/include/gnu/stubs-{32,x32,64}.h; \
+	done
+	touch $@
 else
 $(WRKBUILD)/.headers_configure:
-endif
 	mkdir -p $(EGLIBC_BUILD_DIR_INITIAL)
 	(cd ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION); \
 		ln -sf ../ports ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)/libc);
@@ -58,6 +60,7 @@ endif
 		$(EGLIBC_BUILD_DIR_INITIAL)/option-groups.config
 	(cd $(EGLIBC_BUILD_DIR_INITIAL); \
 		${EGLIBC_ENV} \
+		CC="${REAL_GNU_TARGET_NAME}-gcc $(ADK_TARGET_ABI_CFLAGS)" \
 		$(WRKBUILD)/libc/configure \
 			--prefix=$(STAGING_TARGET_DIR)/usr \
 			--with-headers=$(STAGING_TARGET_DIR)/usr/include \
@@ -68,38 +71,14 @@ endif
 
 $(WRKBUILD)/.headers: $(WRKBUILD)/.headers_configure
 	(cd $(EGLIBC_BUILD_DIR_INITIAL); \
-		PATH='${TARGET_PATH}' \
 		${EGLIBC_ENV} \
+		CC="${REAL_GNU_TARGET_NAME}-gcc $(ADK_TARGET_ABI_CFLAGS)" \
 		$(MAKE) install-headers install-bootstrap-headers=yes cross-compiling=yes \
 	);
 	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs.h
-	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs-64.h
-	touch $@
-
-$(WRKBUILD)/.headers_configure32:
-	mkdir -p $(EGLIBC_BUILD_DIR_INITIAL32)
-	(cd ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION); \
-		ln -sf ../ports ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)/libc);
-	$(CP) ${TOPDIR}/toolchain/eglibc/eglibc.config \
-		$(EGLIBC_BUILD_DIR_INITIAL32)/option-groups.config
-	(cd $(EGLIBC_BUILD_DIR_INITIAL32); \
-		${EGLIBC_ENV} \
-		CC='${REAL_GNU_TARGET_NAME}-gcc -m32' \
-		$(WRKBUILD)/libc/configure \
-			--prefix=$(STAGING_TARGET_DIR_32)/usr \
-			--with-headers=$(STAGING_TARGET_DIR_32)/usr/include \
-			--host=i486-openadk-linux-gnu \
-			${EGLIBC_CONFOPTS} \
-	);
-	(cd $(EGLIBC_BUILD_DIR_INITIAL32); \
-		PATH='${TARGET_PATH}' \
-		${EGLIBC_ENV} \
-		CC='${REAL_GNU_TARGET_NAME}-gcc -m32' \
-		$(MAKE) install-headers install-bootstrap-headers=yes cross-compiling=yes \
-	);
-	touch $(STAGING_TARGET_DIR_32)/usr/include/gnu/stubs.h
-	touch $(STAGING_TARGET_DIR_32)/usr/include/gnu/stubs-64.h
+	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs-{32,x32,64}.h
 	touch $@
+endif
 
 ifeq ($(ADK_TOOLCHAIN_GCC_USE_SSP),y)
 EGLIBC_ENV+=		libc_cv_ssp=yes
@@ -108,15 +87,70 @@ EGLIBC_ENV+=		libc_cv_ssp=no
 endif
 
 ifeq ($(ADK_TARGET_WITH_MULTILIB),y)
-$(WRKBUILD)/.configured: $(WRKBUILD)/.configured32
-else
 $(WRKBUILD)/.configured:
+	for abi in $(TABI); do \
+		mkdir -p $(EGLIBC_BUILD_DIR_FINAL)-$${abi/*:/} ;\
+		$(CP) ${TOPDIR}/toolchain/eglibc/eglibc.config \
+			$(EGLIBC_BUILD_DIR_FINAL)-$${abi/*:/}/option-groups.config ;\
+		(cd $(EGLIBC_BUILD_DIR_FINAL)-$${abi/*:/}; \
+			${EGLIBC_ENV} \
+			CC="${REAL_GNU_TARGET_NAME}-gcc -m$${abi/*:/}" \
+			$(WRKBUILD)/libc/configure \
+				--prefix=/usr \
+				--enable-shared \
+				--enable-stackguard-randomization \
+				--host=$${abi/:*/} \
+				${EGLIBC_CONFOPTS} \
+		); \
+	done
+	touch $@
+
+$(EGLIBC_BUILD_DIR_FINAL)/libc.so:
+$(WRKBUILD)/.compiled: $(WRKBUILD)/.configured
+	for abi in $(TABI); do \
+		${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL)-$${abi/*:/} cross-compiling=yes all ;\
+	done
+	touch $@
+
+$(WRKBUILD)/.installed: $(EGLIBC_BUILD_DIR_FINAL)/libc.so
+	for abi in $(TABI); do \
+		${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL)-$${abi/*:/} install_root=$(STAGING_TARGET_DIR)-$${abi/*:/} install ;\
+	done
+ifeq ($(ADK_TARGET_ABI_64),y)
+	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL)-64 install_root=$(STAGING_TARGET_DIR) install
+endif
+ifeq ($(ADK_TARGET_ABI_32),y)
+	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL)-32 install_root=$(STAGING_TARGET_DIR) install
+endif
+ifeq ($(ADK_TARGET_ABI_X32),y)
+	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL)-x32 install_root=$(STAGING_TARGET_DIR) install
 endif
+	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs.h
+	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs-{32,x32,64}.h
+	# for libgcc build we need C library files, 64 bit default
+	mkdir -p $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2 ; \
+	$(CP) $(STAGING_TARGET_DIR)-64/lib/* $(STAGING_TARGET_DIR)-64/usr/lib/* \
+		$(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/; \
+	rm $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/libc.so ; \
+	-for abi in $(TABI); do \
+		mkdir -p $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/$${abi/*:/} ; \
+		$(CP) $(STAGING_TARGET_DIR)-$${abi/*:/}/lib/* $(STAGING_TARGET_DIR)-$${abi/*:/}/usr/lib/* \
+			$(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/$${abi/*:/} ; \
+		rm $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/$${abi/*:/}/libc.so ; \
+	done
+	${INSTALL_DIR} ${STAGING_TARGET_DIR}/etc
+	${INSTALL_DATA} ${WRKBUILD}/libc/posix/gai.conf ${STAGING_TARGET_DIR}/etc/
+	${INSTALL_DATA} ${WRKBUILD}/libc/nscd/nscd.conf ${STAGING_TARGET_DIR}/etc/
+	${INSTALL_DATA} ${WRKBUILD}/libc/nss/nsswitch.conf ${STAGING_TARGET_DIR}/etc/
+	touch $@
+else
+$(WRKBUILD)/.configured:
 	mkdir -p $(EGLIBC_BUILD_DIR_FINAL)
 	$(CP) ${TOPDIR}/toolchain/eglibc/eglibc.config \
 		$(EGLIBC_BUILD_DIR_FINAL)/option-groups.config
 	(cd $(EGLIBC_BUILD_DIR_FINAL); \
 		${EGLIBC_ENV} \
+		CC="${REAL_GNU_TARGET_NAME}-gcc $(ADK_TARGET_ABI_CFLAGS)" \
 		$(WRKBUILD)/libc/configure \
 			--prefix=/usr \
 			--enable-shared \
@@ -128,55 +162,20 @@ endif
 
 $(EGLIBC_BUILD_DIR_FINAL)/libc.so:
 $(WRKBUILD)/.compiled: $(WRKBUILD)/.configured
-	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL) cross-compiling=yes all
+	${EGLIBC_ENV} \
+	CC="${REAL_GNU_TARGET_NAME}-gcc $(ADK_TARGET_ABI_CFLAGS)" \
+		$(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL) cross-compiling=yes all
 	touch $@
 
 $(WRKBUILD)/.installed: $(EGLIBC_BUILD_DIR_FINAL)/libc.so
-	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL) install_root=$(STAGING_TARGET_DIR) install
+	${EGLIBC_ENV} \
+	CC="${REAL_GNU_TARGET_NAME}-gcc $(ADK_TARGET_ABI_CFLAGS)" \
+		$(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL) install_root=$(STAGING_TARGET_DIR) install
+	${INSTALL_DIR} ${STAGING_TARGET_DIR}/etc
 	${INSTALL_DATA} ${WRKBUILD}/libc/posix/gai.conf ${STAGING_TARGET_DIR}/etc/
 	${INSTALL_DATA} ${WRKBUILD}/libc/nscd/nscd.conf ${STAGING_TARGET_DIR}/etc/
 	${INSTALL_DATA} ${WRKBUILD}/libc/nss/nsswitch.conf ${STAGING_TARGET_DIR}/etc/
 	touch $@
-
-$(WRKBUILD)/.configured32:
-	mkdir -p $(EGLIBC_BUILD_DIR_FINAL32)
-	$(CP) ${TOPDIR}/toolchain/eglibc/eglibc.config \
-		$(EGLIBC_BUILD_DIR_FINAL32)/option-groups.config
-	(cd $(EGLIBC_BUILD_DIR_FINAL32); \
-		${EGLIBC_ENV} \
-		CC='${REAL_GNU_TARGET_NAME}-gcc -m32' \
-		$(WRKBUILD)/libc/configure \
-			--prefix=/usr \
-			--enable-shared \
-			--enable-stackguard-randomization \
-			--host=i486-openadk-linux-gnu \
-			${EGLIBC_CONFOPTS} \
-	);
-	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL32) cross-compiling=yes all
-	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINAL32) install_root=$(STAGING_TARGET_DIR_32) install
-	mkdir -p $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/32
-	$(CP) $(STAGING_TARGET_DIR_32)/lib/* $(STAGING_TARGET_DIR_32)/usr/lib/* \
-		$(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/32
-	-rm $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/32/libc.so
-	touch $@
-
-$(WRKBUILD)/.configuredx32:
-	mkdir -p $(EGLIBC_BUILD_DIR_FINALX32)
-	$(CP) ${TOPDIR}/toolchain/eglibc/eglibc.config \
-		$(EGLIBC_BUILD_DIR_FINALX32)/option-groups.config
-	(cd $(EGLIBC_BUILD_DIR_FINALX32); \
-		${EGLIBC_ENV} \
-		CC=${REAL_GNU_TARGET_NAME}-gcc -mx32 \
-		$(WRKBUILD)/libc/configure \
-			--prefix=/usr \
-			--enable-shared \
-			--enable-stackguard-randomization \
-			--host=x86_64-x32-openadk-linux-gnu \
-			${EGLIBC_CONFOPTS} \
-	);
-	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINALX32) cross-compiling=yes all
-	${EGLIBC_ENV} $(MAKE) -C $(EGLIBC_BUILD_DIR_FINALX32) install_root=$(STAGING_TARGET_DIR_X32) install
-	touch $@
-
+endif
 
 include ${TOPDIR}/mk/toolchain.mk
diff --git a/toolchain/eglibc/Makefile.inc b/toolchain/eglibc/Makefile.inc
index 457969ef6..2541bb5e5 100644
--- a/toolchain/eglibc/Makefile.inc
+++ b/toolchain/eglibc/Makefile.inc
@@ -6,3 +6,29 @@ PKG_VERSION:=		2.16
 PKG_RELEASE:=		1
 PKG_MD5SUM:=		97b0956c312e747dcead4c9459ac2aa5
 PKG_SITES:=		http://openadk.org/distfiles/
+EGLIBC_CONFOPTS:=	--build=$(GNU_HOST_NAME) \
+			--without-cvs \
+			--disable-profile \
+			--disable-debug \
+			--enable-kernel=2.6.0 \
+			--without-gd \
+			--with-__thread \
+			--with-tls \
+			--enable-add-ons \
+			$(NLS)
+
+EGLIBC_ENV:=		PATH='${TARGET_PATH}' \
+			BUILD_CC=${CC_FOR_BUILD} \
+			GCC_HONOUR_COPTS=s \
+			CFLAGS="$(TARGET_CFLAGS)" \
+			CC=${REAL_GNU_TARGET_NAME}-gcc \
+			CXX=${REAL_GNU_TARGET_NAME}-g++ \
+			AR=${REAL_GNU_TARGET_NAME}-ar \
+			RANLIB=${REAL_GNU_TARGET_NAME}-ranlib \
+			libc_cv_cc_with_libunwind=no \
+			libc_cv_forced_unwind=yes \
+			libc_cv_c_cleanup=yes \
+			libc_cv_gnu99_inline=yes \
+			libc_cv_initfini_array=yes \
+			libc_cv_slibdir="/lib"
+
diff --git a/toolchain/eglibc/Makefile.multilib b/toolchain/eglibc/Makefile.multilib
new file mode 100644
index 000000000..08be0a100
--- /dev/null
+++ b/toolchain/eglibc/Makefile.multilib
@@ -0,0 +1,13 @@
+# multilib support
+ifeq ($(ADK_TARGET_WITH_MULTILIB),y)
+TABI:=
+ifeq ($(ADK_TARGET_MULTILIB_X86_X32),y)
+TABI+=x86_64-openadk-linux-gnu:x32
+endif
+ifeq ($(ADK_TARGET_MULTILIB_X86_32),y)
+TABI+=i486-openadk-linux-gnu:32
+endif
+ifeq ($(ADK_TARGET_MULTILIB_X86_64),y)
+TABI+=x86_64-openadk-linux-gnu:64
+endif
+endif
diff --git a/toolchain/glibc/Makefile b/toolchain/glibc/Makefile
index 65341591b..fbcbc617a 100644
--- a/toolchain/glibc/Makefile
+++ b/toolchain/glibc/Makefile
@@ -15,6 +15,7 @@ TARGET_CFLAGS:=	$(filter-out -fstack-protector,$(TARGET_CFLAGS))
 #TARGET_CFLAGS:=	$(filter-out -flto,$(TARGET_CFLAGS))
 
 include Makefile.inc
+include Makefile.multilib
 include ${TOPDIR}/mk/buildhlp.mk
 
 ifeq ($(ADK_TARGET_NO_FPU),y)
@@ -29,6 +30,36 @@ endif
 GLIBC_BUILD_DIR_INITIAL:=	${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)-headers
 GLIBC_BUILD_DIR_FINAL:=		${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION)-final
 
+ifeq ($(ADK_TARGET_WITH_MULTILIB),y)
+$(WRKBUILD)/.headers_configure: 
+	for abi in $(TABI); do \
+		mkdir -p $(GLIBC_BUILD_DIR_INITIAL)-$${abi/*:/}; \
+		(cd ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION); \
+			ln -sf ../../w-glibc-ports-$(PKG_VERSION)-1/glibc-ports-$(PKG_VERSION)/ ports); \
+		(cd $(GLIBC_BUILD_DIR_INITIAL)-$${abi/*:/}; \
+			${GLIBC_ENV} \
+			CC="${REAL_GNU_TARGET_NAME}-gcc -m$${abi/*:/}" \
+			$(WRKBUILD)/libc/configure \
+				--prefix=$(STAGING_TARGET_DIR)-$${abi/*:/}/usr \
+				--with-sysroot=$(STAGING_TARGET_DIR)-$${abi/*:/} \
+				--host=$${abi/:*/} \
+				${GLIBC_CONFOPTS} \
+		); \
+	done
+	touch $@
+
+$(WRKBUILD)/.headers: $(WRKBUILD)/.headers_configure
+	for abi in $(TABI); do \
+		(cd $(GLIBC_BUILD_DIR_INITIAL)-$${abi/*:/}; \
+			${GLIBC_ENV} \
+			CC="${REAL_GNU_TARGET_NAME}-gcc -m$${abi/*:/}" \
+			$(MAKE) ${GLIBC_MAKEOPTS} install-headers \
+		); \
+	done
+	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs.h
+	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs-{32,x32,64}.h
+	touch $@
+else
 $(WRKBUILD)/.headers_configure:
 	mkdir -p $(GLIBC_BUILD_DIR_INITIAL)
 	(cd ${WRKDIR}/$(PKG_NAME)-$(PKG_VERSION); \
@@ -45,12 +76,67 @@ $(WRKBUILD)/.headers_configure:
 $(WRKBUILD)/.headers: $(WRKBUILD)/.headers_configure
 	(cd $(GLIBC_BUILD_DIR_INITIAL); \
 		${GLIBC_ENV} \
-		$(MAKE) ${GLIBC_MAKEOPTS} \
-		install-headers \
+		$(MAKE) ${GLIBC_MAKEOPTS} install-headers \
 	);
 	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs.h
+	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs-{32,x32,64}.h
+	touch $@
+endif
+
+ifeq ($(ADK_TARGET_WITH_MULTILIB),y)
+$(WRKBUILD)/.configured:
+	for abi in $(TABI); do \
+		mkdir -p $(GLIBC_BUILD_DIR_FINAL)-$${abi/*:/} ;\
+		(cd $(GLIBC_BUILD_DIR_FINAL)-$${abi/*:/}; \
+			${GLIBC_ENV} \
+			CC="${REAL_GNU_TARGET_NAME}-gcc -m$${abi/*:/}" \
+			$(WRKBUILD)/libc/configure \
+				--prefix=/usr \
+				--enable-shared \
+				--enable-stackguard-randomization \
+				--host=$${abi/:*/} \
+				${GLIBC_CONFOPTS} \
+		); \
+	done
 	touch $@
 
+$(GLIBC_BUILD_DIR_FINAL)/libc.so:
+$(WRKBUILD)/.compiled: $(WRKBUILD)/.configured
+	for abi in $(TABI); do \
+		${GLIBC_ENV} $(MAKE) ${GLIBC_MAKEOPTS} -C $(GLIBC_BUILD_DIR_FINAL)-$${abi/*:/} all ;\
+	done
+	touch $@
+
+$(WRKBUILD)/.installed: $(GLIBC_BUILD_DIR_FINAL)/libc.so
+	for abi in $(TABI); do \
+		${GLIBC_ENV} $(MAKE) -C $(GLIBC_BUILD_DIR_FINAL)-$${abi/*:/} install_root=$(STAGING_TARGET_DIR)-$${abi/*:/} install ;\
+	done
+ifeq ($(ADK_TARGET_ABI_64),y)
+	${GLIBC_ENV} $(MAKE) -C $(GLIBC_BUILD_DIR_FINAL)-64 install_root=$(STAGING_TARGET_DIR) install
+endif
+ifeq ($(ADK_TARGET_ABI_32),y)
+	${GLIBC_ENV} $(MAKE) -C $(GLIBC_BUILD_DIR_FINAL)-32 install_root=$(STAGING_TARGET_DIR) install
+endif
+ifeq ($(ADK_TARGET_ABI_X32),y)
+	${GLIBC_ENV} $(MAKE) -C $(GLIBC_BUILD_DIR_FINAL)-x32 install_root=$(STAGING_TARGET_DIR) install
+endif
+	# for libgcc build we need C library files, 64 bit default
+	mkdir -p $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2 ; \
+	$(CP) $(STAGING_TARGET_DIR)-64/lib/* $(STAGING_TARGET_DIR)-64/usr/lib/* \
+		$(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/; \
+	rm $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/libc.so ; \
+	-for abi in $(TABI); do \
+		mkdir -p $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/$${abi/*:/} ; \
+		$(CP) $(STAGING_TARGET_DIR)-$${abi/*:/}/lib/* $(STAGING_TARGET_DIR)-$${abi/*:/}/usr/lib/* \
+			$(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/$${abi/*:/} ; \
+		rm $(STAGING_TARGET_DIR)/lib/$(REAL_GNU_TARGET_NAME)/4.7.2/$${abi/*:/}/libc.so ; \
+	done
+	mkdir -p ${STAGING_TARGET_DIR}/etc
+	${INSTALL_DATA} ${WRKBUILD}/libc/posix/gai.conf ${STAGING_TARGET_DIR}/etc/
+	${INSTALL_DATA} ${WRKBUILD}/libc/nscd/nscd.conf ${STAGING_TARGET_DIR}/etc/
+	${INSTALL_DATA} ${WRKBUILD}/libc/nss/nsswitch.conf ${STAGING_TARGET_DIR}/etc/
+	touch $@
+else
 $(WRKBUILD)/.configured:
 	mkdir -p $(GLIBC_BUILD_DIR_FINAL)
 	(cd $(GLIBC_BUILD_DIR_FINAL); \
@@ -68,13 +154,12 @@ $(WRKBUILD)/.compiled:
 	touch $@
 
 $(WRKBUILD)/.installed:
-	${GLIBC_ENV} $(MAKE) -C $(GLIBC_BUILD_DIR_FINAL) \
-		install_root=$(STAGING_TARGET_DIR) install
+	${GLIBC_ENV} $(MAKE) -C $(GLIBC_BUILD_DIR_FINAL) install_root=$(STAGING_TARGET_DIR) install
 	mkdir -p ${STAGING_TARGET_DIR}/etc
 	${INSTALL_DATA} ${WRKBUILD}/posix/gai.conf ${STAGING_TARGET_DIR}/etc
 	${INSTALL_DATA} ${WRKBUILD}/nscd/nscd.conf ${STAGING_TARGET_DIR}/etc
 	${INSTALL_DATA} ${WRKBUILD}/nss/nsswitch.conf ${STAGING_TARGET_DIR}/etc
-	touch $(STAGING_TARGET_DIR)/usr/include/gnu/stubs.h
 	touch $@
+endif
 
 include ${TOPDIR}/mk/toolchain.mk
diff --git a/toolchain/glibc/Makefile.multilib b/toolchain/glibc/Makefile.multilib
new file mode 100644
index 000000000..08be0a100
--- /dev/null
+++ b/toolchain/glibc/Makefile.multilib
@@ -0,0 +1,13 @@
+# multilib support
+ifeq ($(ADK_TARGET_WITH_MULTILIB),y)
+TABI:=
+ifeq ($(ADK_TARGET_MULTILIB_X86_X32),y)
+TABI+=x86_64-openadk-linux-gnu:x32
+endif
+ifeq ($(ADK_TARGET_MULTILIB_X86_32),y)
+TABI+=i486-openadk-linux-gnu:32
+endif
+ifeq ($(ADK_TARGET_MULTILIB_X86_64),y)
+TABI+=x86_64-openadk-linux-gnu:64
+endif
+endif
diff --git a/toolchain/kernel-headers/Makefile b/toolchain/kernel-headers/Makefile
index 405119000..e81fa87eb 100644
--- a/toolchain/kernel-headers/Makefile
+++ b/toolchain/kernel-headers/Makefile
@@ -10,9 +10,17 @@ $(WRKBUILD)/.headers:
 	$(MAKE) -C $(WRKBUILD) HOSTCC=$(CC_FOR_BUILD) ARCH=$(ARCH) V=1 \
 		INSTALL_HDR_PATH=$(STAGING_DIR)/usr \
 		headers_install
+ifeq ($(ADK_TARGET_WITH_MULTILIB),y)
 	$(MAKE) -C $(WRKBUILD) HOSTCC=$(CC_FOR_BUILD) ARCH=x86 V=1 \
-		INSTALL_HDR_PATH=$(STAGING_TARGET_DIR_32)/usr \
+		INSTALL_HDR_PATH=$(STAGING_TARGET_DIR)-32/usr \
 		headers_install
+	$(MAKE) -C $(WRKBUILD) HOSTCC=$(CC_FOR_BUILD) ARCH=x86 V=1 \
+		INSTALL_HDR_PATH=$(STAGING_TARGET_DIR)-x32/usr \
+		headers_install
+	$(MAKE) -C $(WRKBUILD) HOSTCC=$(CC_FOR_BUILD) ARCH=x86 V=1 \
+		INSTALL_HDR_PATH=$(STAGING_TARGET_DIR)-64/usr \
+		headers_install
+endif
 	$(MAKE) -C $(WRKBUILD) HOSTCC=$(CC_FOR_BUILD) ARCH=$(ARCH) V=1 \
 		INSTALL_HDR_PATH=$(LINUX_HEADER_DIR) \
 		headers_install