From ce0418c732e0d950d3a3c0b2b6726a691b8a0eca Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Mon, 17 Mar 2014 19:16:45 +0100
Subject: add TOOLCHAIN_DIR support

establish an extra dir for toolchain. Better for preparing toolchain
for other projetcs without host tools only used by openadk.
Use /usr prefix. No symlink workarounds needed anymore.
---
 .gitignore                  |  2 +-
 mk/build.mk                 | 17 ++++++++++-------
 mk/vars.mk                  | 19 +++++++++++--------
 toolchain/Makefile          |  8 +-------
 toolchain/binutils/Makefile |  2 +-
 toolchain/gcc/Makefile      | 41 +++++++++++++++++++----------------------
 toolchain/glibc/Makefile    |  2 +-
 toolchain/gmp/Makefile      |  5 +++--
 toolchain/libelf/Makefile   |  2 +-
 toolchain/mpc/Makefile      |  4 ++--
 toolchain/mpfr/Makefile     |  2 +-
 11 files changed, 51 insertions(+), 53 deletions(-)

diff --git a/.gitignore b/.gitignore
index fc81d7882..55f82fdd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,7 +16,7 @@
 /tests/adk.exp
 /tests/adk.exp.in.tmp
 /prereq.mk
-/toolchain_build_*/
+/toolchain_*/
 /.ADK_HAVE_DOT_CONFIG
 /.tmpconfig.h
 /.prereq_done
diff --git a/mk/build.mk b/mk/build.mk
index 821548428..079af1e30 100644
--- a/mk/build.mk
+++ b/mk/build.mk
@@ -170,6 +170,9 @@ endif
 ${STAGING_TARGET_DIR} ${STAGING_TARGET_DIR}/etc ${STAGING_HOST_DIR}:
 	mkdir -p ${STAGING_TARGET_DIR}/{bin,etc,lib,usr/bin,usr/include,usr/lib/pkgconfig} \
 		${STAGING_HOST_DIR}/{bin,lib,usr/bin,usr/lib,usr/include}
+	for i in lib64 lib32 libx32;do; \
+		cd ${STAGING_TARGET_DIR}/; ln -sf lib $$i; \
+	done
 
 ${STAGING_TARGET_DIR}/etc/ipkg.conf: ${STAGING_TARGET_DIR}/etc
 ifeq ($(ADK_TARGET_PACKAGE_IPKG),y)
@@ -261,7 +264,7 @@ cleandir:
 	@$(MAKE) -C $(CONFIG) clean $(MAKE_TRACE) 
 	rm -rf $(BUILD_DIR_PFX) $(FW_DIR_PFX) $(TARGET_DIR_PFX) \
 	    ${TOPDIR}/package/pkglist.d ${TOPDIR}/package/pkgconfigs.d
-	rm -rf $(TOOLCHAIN_BUILD_DIR_PFX) $(STAGING_HOST_DIR_PFX) $(TOOLS_BUILD_DIR)
+	rm -rf $(TOOLCHAIN_DIR_PFX) $(STAGING_HOST_DIR_PFX) $(TOOLS_BUILD_DIR)
 	rm -rf $(STAGING_TARGET_DIR_PFX) $(STAGING_PKG_DIR_PFX)
 	rm -f .menu .tmpconfig.h .rebuild* ${TOPDIR}/package/Depends.mk ${TOPDIR}/prereq.mk
 
@@ -269,16 +272,16 @@ cleantoolchain:
 	@$(TRACE) cleantoolchain
 	@rm -rf $(BUILD_DIR_PFX) $(TARGET_DIR_PFX) \
 	    ${TOPDIR}/package/pkglist.d ${TOPDIR}/package/pkgconfigs.d
-	@rm -rf $(TOOLCHAIN_BUILD_DIR_PFX) $(STAGING_HOST_DIR_PFX) $(TOOLS_BUILD_DIR)
+	@rm -rf $(TOOLCHAIN_DIR_PFX) $(STAGING_HOST_DIR_PFX) $(TOOLS_BUILD_DIR)
 	@rm -rf $(STAGING_TARGET_DIR_PFX) $(STAGING_PKG_DIR_PFX)
 	@rm -f .menu .tmpconfig.h .rebuild* ${TOPDIR}/package/Depends.mk
 
 distclean:
 	@$(TRACE) distclean
 	@$(MAKE) -C $(CONFIG) clean $(MAKE_TRACE)
-	@rm -rf $(BUILD_DIR_PFX) $(FW_DIR_PFX) $(TARGET_DIR_PFX) $(DISTDIR) \
+	@rm -rf $(BUILD_DIR_PFX) $(FW_DIR_PFX) $(TARGET_DIR_PFX) $(DL_DIR) \
 	    ${TOPDIR}/package/pkglist.d ${TOPDIR}/package/pkgconfigs.d
-	@rm -rf $(TOOLCHAIN_BUILD_DIR_PFX) $(STAGING_HOST_DIR_PFX) $(TOOLS_BUILD_DIR)
+	@rm -rf $(TOOLCHAIN_DIR_PFX) $(STAGING_HOST_DIR_PFX) $(TOOLS_BUILD_DIR)
 	@rm -rf $(STAGING_TARGET_DIR_PFX) $(STAGING_PKG_DIR_PFX)
 	@rm -f .adkinit .config* .defconfig .tmpconfig.h all.config ${TOPDIR}/prereq.mk \
 	    .menu ${TOPDIR}/package/Depends.mk .ADK_HAVE_DOT_CONFIG .rebuild.*
@@ -449,9 +452,9 @@ _mconfig2: ${CONFIG}/conf modconfig .menu
 
 distclean:
 	@$(MAKE) -C $(CONFIG) clean
-	@rm -rf $(BUILD_DIR_PFX) $(FW_DIR_PFX) $(TARGET_DIR_PFX) $(DISTDIR) \
+	@rm -rf $(BUILD_DIR_PFX) $(FW_DIR_PFX) $(TARGET_DIR_PFX) $(DL_DIR) \
 	    ${TOPDIR}/package/pkglist.d ${TOPDIR}/package/pkgconfigs.d
-	@rm -rf $(TOOLCHAIN_BUILD_DIR_PFX) $(STAGING_TARGET_DIR_PFX) $(TOOLS_BUILD_DIR)
+	@rm -rf $(TOOLCHAIN_DIR_PFX) $(STAGING_TARGET_DIR_PFX) $(TOOLS_BUILD_DIR)
 	@rm -rf $(STAGING_HOST_DIR_PFX) $(STAGING_TARGET_DIR_PFX) $(STAGING_PKG_DIR_PFX)
 	@rm -f .adkinit .config* .defconfig .tmpconfig.h all.config ${TOPDIR}/prereq.mk \
 	    .menu .rebuild.* ${TOPDIR}/package/Depends.mk .ADK_HAVE_DOT_CONFIG
@@ -479,7 +482,7 @@ bulktoolchain:
 				if [ $$arch = "armhf" ];then arch=arm; else arch=$$arch;fi; \
 				tabi=$$(grep ^ADK_TARGET_ABI= .config|cut -d \" -f 2);\
 				if [ -z $$tabi ];then abi="";else abi=_$$tabi;fi; \
-				tar -cvJf ${TOPDIR}/firmware/toolchain_$${arch}_$${libc}$${abi}.tar.xz host_* target_$${arch}_$${libc}$${abi}; \
+				tar -cvJf ${TOPDIR}/firmware/toolchain_$${arch}_$${libc}$${abi}.tar.xz toolchain_${GNU_HOST_NAME} target_$${arch}_$${libc}$${abi}; \
 				$(GMAKE) cleantoolchain; \
 			rm .config; \
 		    ) 2>&1 | tee $(TOPDIR)/firmware/toolchain_build.log; \
diff --git a/mk/vars.mk b/mk/vars.mk
index dc030f0ca..699f3eda4 100644
--- a/mk/vars.mk
+++ b/mk/vars.mk
@@ -20,13 +20,14 @@ endif
 TOOLS_BUILD_DIR=	$(BASE_DIR)/tools_build
 SCRIPT_DIR:=		$(BASE_DIR)/scripts
 STAGING_HOST_DIR:=	${BASE_DIR}/host_${GNU_HOST_NAME}
+TOOLCHAIN_DIR:=		${BASE_DIR}/toolchain_${GNU_HOST_NAME}
 
 # dirs for cleandir
 FW_DIR_PFX:=		$(BASE_DIR)/firmware
 BUILD_DIR_PFX:=		$(BASE_DIR)/build_*
 STAGING_PKG_DIR_PFX:=	${BASE_DIR}/pkg_*
 STAGING_TARGET_DIR_PFX:=${BASE_DIR}/target_*
-TOOLCHAIN_BUILD_DIR_PFX=$(BASE_DIR)/toolchain_build_*
+TOOLCHAIN_DIR_PFX=	$(BASE_DIR)/toolchain_*
 STAGING_HOST_DIR_PFX:=	${BASE_DIR}/host_*
 TARGET_DIR_PFX:=	$(BASE_DIR)/root_*
 
@@ -36,7 +37,7 @@ FW_DIR:=		$(BASE_DIR)/firmware/${ADK_TARGET_SYSTEM}_${CPU_ARCH}_${ADK_TARGET_LIB
 BUILD_DIR:=		${BASE_DIR}/build_${ADK_TARGET_SYSTEM}_${CPU_ARCH}_${ADK_TARGET_LIBC}
 STAGING_TARGET_DIR:=	${BASE_DIR}/target_${CPU_ARCH}_${ADK_TARGET_LIBC}
 STAGING_PKG_DIR:=	${BASE_DIR}/pkg_${ADK_TARGET_SYSTEM}_${CPU_ARCH}_${ADK_TARGET_LIBC}
-STAGING_HOST2TARGET:=	../target_${CPU_ARCH}_${ADK_TARGET_LIBC}
+STAGING_HOST2TARGET:=	../../target_${CPU_ARCH}_${ADK_TARGET_LIBC}
 TOOLCHAIN_BUILD_DIR=	$(BASE_DIR)/toolchain_build_${CPU_ARCH}_${ADK_TARGET_LIBC}
 else
 TARGET_DIR:=		$(BASE_DIR)/root_${ADK_TARGET_SYSTEM}_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_ABI}
@@ -44,7 +45,7 @@ FW_DIR:=		$(BASE_DIR)/firmware/${ADK_TARGET_SYSTEM}_${CPU_ARCH}_${ADK_TARGET_LIB
 BUILD_DIR:=		${BASE_DIR}/build_${ADK_TARGET_SYSTEM}_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_ABI}
 STAGING_TARGET_DIR:=	${BASE_DIR}/target_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_ABI}
 STAGING_PKG_DIR:=	${BASE_DIR}/pkg_${ADK_TARGET_SYSTEM}_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_ABI}
-STAGING_HOST2TARGET:=	../target_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_ABI}
+STAGING_HOST2TARGET:=	../../target_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_ABI}
 TOOLCHAIN_BUILD_DIR=	$(BASE_DIR)/toolchain_build_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_ABI}
 endif
 
@@ -52,9 +53,9 @@ PACKAGE_DIR:=		$(FW_DIR)/packages
 SCRIPT_TARGET_DIR:=	${STAGING_TARGET_DIR}/scripts
 
 # PATH variables
-TARGET_PATH=		${SCRIPT_DIR}:${STAGING_TARGET_DIR}/scripts:${STAGING_HOST_DIR}/bin:${STAGING_HOST_DIR}/usr/bin:${_PATH}
-HOST_PATH=		${SCRIPT_DIR}:${STAGING_HOST_DIR}/bin:${STAGING_HOST_DIR}/usr/bin:${_PATH}
-AUTOTOOL_PATH=		${STAGING_HOST_DIR}/bin:${STAGING_HOST_DIR}/usr/bin:${STAGING_TARGET_DIR}/scripts:${_PATH}
+TARGET_PATH=		${SCRIPT_DIR}:${STAGING_TARGET_DIR}/scripts:${TOOLCHAIN_DIR}/usr/bin:${STAGING_HOST_DIR}/usr/bin:${_PATH}
+HOST_PATH=		${SCRIPT_DIR}:${TOOLCHAIN_DIR}/bin:${STAGING_HOST_DIR}/usr/bin:${_PATH}
+AUTOTOOL_PATH=		${TOOLCHAIN_DIR}/usr/bin:${STAGING_HOST_DIR}/usr/bin:${STAGING_TARGET_DIR}/scripts:${_PATH}
 
 ifeq ($(ADK_DISABLE_HONOUR_CFLAGS),)
 GCC_CHECK:=		GCC_HONOUR_COPTS=2
@@ -63,9 +64,11 @@ GCC_CHECK:=
 endif
 
 GNU_TARGET_NAME:=	$(CPU_ARCH)-$(ADK_VENDOR)-linux-$(ADK_TARGET_SUFFIX)
-TARGET_CROSS:=		$(STAGING_HOST_DIR)/bin/$(GNU_TARGET_NAME)-
+TARGET_CROSS:=		$(TOOLCHAIN_DIR)/usr/bin/$(GNU_TARGET_NAME)-
 TARGET_COMPILER_PREFIX?=${TARGET_CROSS}
-CONFIGURE_TRIPLE:=	--build=${GNU_HOST_NAME} --host=${GNU_TARGET_NAME} --target=${GNU_TARGET_NAME}
+CONFIGURE_TRIPLE:=	--build=${GNU_HOST_NAME} \
+			--host=${GNU_TARGET_NAME} \
+			--target=${GNU_TARGET_NAME}
 
 ifneq ($(strip ${ADK_USE_CCACHE}),)
 TARGET_COMPILER_PREFIX=ccache ${TARGET_CROSS}
diff --git a/toolchain/Makefile b/toolchain/Makefile
index db5f65fd5..c70ea9820 100644
--- a/toolchain/Makefile
+++ b/toolchain/Makefile
@@ -53,17 +53,11 @@ else
 $(LIBC)-fixup: gcc-install
 endif
 
-$(STAGING_HOST_DIR):
-	@mkdir -p $(STAGING_HOST_DIR)/lib
-	@mkdir -p $(STAGING_HOST_DIR)/include
-	@mkdir -p $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)
-	@ln -sf ../lib $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/lib
-
 %-download:
 	$(TRACE) toolchain/$(patsubst %-download,%,$@)/download
 	$(MAKE) -C $(patsubst %-download,%,$@) fetch
 
-%-prepare: $(STAGING_HOST_DIR)
+%-prepare:
 	$(TRACE) toolchain/$(patsubst %-prepare,%,$@)/prepare
 	@if test x"$(patsubst %-prepare,%,$@)" = x"$(LIBC)"; then \
 		$(MAKE) -C $(patsubst %-prepare,%,$@) prepare \
diff --git a/toolchain/binutils/Makefile b/toolchain/binutils/Makefile
index fc256c578..6a01f1c9a 100644
--- a/toolchain/binutils/Makefile
+++ b/toolchain/binutils/Makefile
@@ -34,7 +34,7 @@ $(WRKBUILD)/.headers:
 $(WRKBUILD)/.configured:
 	(cd $(WRKBUILD); \
 		$(WRKBUILD)/configure \
-		--prefix=$(STAGING_HOST_DIR) \
+		--prefix=$(TOOLCHAIN_DIR)/usr \
 		--target=$(GNU_TARGET_NAME) \
 		--with-sysroot=$(STAGING_TARGET_DIR) \
 		--disable-dependency-tracking \
diff --git a/toolchain/gcc/Makefile b/toolchain/gcc/Makefile
index 475c90662..98e150f7a 100644
--- a/toolchain/gcc/Makefile
+++ b/toolchain/gcc/Makefile
@@ -8,14 +8,14 @@ TARGET_CFLAGS:=		$(filter-out -fstack-protector,$(TARGET_CFLAGS))
 
 include Makefile.inc
 
-GCC_CONFOPTS:=		--prefix=$(STAGING_HOST_DIR) \
+GCC_CONFOPTS:=		--prefix=$(TOOLCHAIN_DIR)/usr \
 			--with-bugurl="http://www.openadk.org/" \
 			--build=$(GNU_HOST_NAME) \
 			--host=$(GNU_HOST_NAME) \
 			--target=$(GNU_TARGET_NAME) \
-			--with-gmp=$(STAGING_HOST_DIR) \
-			--with-mpfr=$(STAGING_HOST_DIR) \
-			--with-libelf=$(STAGING_HOST_DIR) \
+			--with-gmp=$(STAGING_HOST_DIR)/usr \
+			--with-mpfr=$(STAGING_HOST_DIR)/usr \
+			--with-libelf=$(STAGING_HOST_DIR)/usr \
 			--disable-__cxa_atexit \
 			--with-gnu-ld \
 			--with-gnu-as \
@@ -120,15 +120,17 @@ GCC_BUILD_DIR_FINAL:=	$(WRKBUILD)-final
 $(GCC_BUILD_DIR_MINIMAL)/.configured:
 	mkdir -p $(GCC_BUILD_DIR_MINIMAL)
 	# these symlinks are very important, do not remove
-	rm -rf $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/sys-include
-	ln -sf ${STAGING_TARGET_DIR}/usr/include $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/sys-include
-	rm -rf ${STAGING_HOST_DIR}/$(GNU_TARGET_NAME)/lib
-	ln -sf ${STAGING_TARGET_DIR}/lib $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/lib
+	rm -rf $(TOOLCHAIN_DIR)/$(GNU_TARGET_NAME)/sys-include
+	ln -sf ${STAGING_TARGET_DIR}/usr/include \
+		$(TOOLCHAIN_DIR)/usr/$(GNU_TARGET_NAME)/sys-include
+	rm -rf ${TOOLCHAIN_DIR}/usr/$(GNU_TARGET_NAME)/lib
+	ln -sf ${STAGING_TARGET_DIR}/lib $(TOOLCHAIN_DIR)/usr/$(GNU_TARGET_NAME)/lib
 ifeq ($(ADK_LINUX_SH),y)
 	(cd ${STAGING_TARGET_DIR}/ && ln -sf . m4 && ln -sf . m4-nofpu)
 endif
-	sed -i '/k prot/agcc_cv_libc_provides_ssp=yes' $(WRKBUILD)/gcc/configure
-	cd $(GCC_BUILD_DIR_MINIMAL); PATH='$(TARGET_PATH)' \
+	$(SED) '/k prot/agcc_cv_libc_provides_ssp=yes' $(WRKBUILD)/gcc/configure
+	cd $(GCC_BUILD_DIR_MINIMAL); \
+		PATH='$(TARGET_PATH)' \
 		CFLAGS="-O0 -g0" \
 		CXXFLAGS="-O0 -g0" \
 		$(WRKBUILD)/configure \
@@ -151,7 +153,8 @@ $(WRKBUILD)/.headers: $(GCC_BUILD_DIR_MINIMAL)/.compiled
 
 $(GCC_BUILD_DIR_INITIAL)/.configured:
 	mkdir -p $(GCC_BUILD_DIR_INITIAL)
-	cd $(GCC_BUILD_DIR_INITIAL); PATH='$(TARGET_PATH)' \
+	cd $(GCC_BUILD_DIR_INITIAL); \
+		PATH='$(TARGET_PATH)' \
 		CFLAGS="-O0 -g0" \
 		CXXFLAGS="-O0 -g0" \
 		$(WRKBUILD)/configure \
@@ -174,7 +177,8 @@ $(WRKBUILD)/.configured: $(GCC_BUILD_DIR_INITIAL)/.compiled
 
 $(GCC_BUILD_DIR_FINAL)/.configured:
 	mkdir -p $(GCC_BUILD_DIR_FINAL)
-	cd $(GCC_BUILD_DIR_FINAL); PATH='$(TARGET_PATH)' \
+	cd $(GCC_BUILD_DIR_FINAL); \
+		PATH='$(TARGET_PATH)' \
 		$(WRKBUILD)/configure \
 			${GCC_CONFOPTS} \
 			${GCC_FINAL_CONFOPTS} \
@@ -192,19 +196,12 @@ $(WRKBUILD)/.installed: $(WRKBUILD)/.compiled
 	PATH='$(TARGET_PATH)' $(MAKE) -C $(GCC_BUILD_DIR_FINAL) install
 	# remove duplicate tools, convert hardlinks to symlinks
 	set -e; \
-	cd $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/bin; \
+	cd $(TOOLCHAIN_DIR)/usr/$(GNU_TARGET_NAME)/bin; \
 		for app in ar as c++ g++ gcc ld ld.bfd nm objcopy objdump ranlib strip; do \
 			ln -sf ../../bin/$(GNU_TARGET_NAME)-$${app} $${app}; \
 		done;
-	(cd $(STAGING_HOST_DIR)/bin && \
+	(cd $(TOOLCHAIN_DIR)/usr/bin && \
 		ln -sf $(GNU_TARGET_NAME)-gcc $(GNU_TARGET_NAME)-gcc-${PKG_VERSION})
-	# setup symlink, so that gcc/g++ find cc1plus
-	(cd $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/ && \
-		ln -sf ../libexec .)
-	# setup symlink, so that gcc/g++ find stddef.h
-	(cd $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/lib/ && \
-		ln -sf ../../host_${CPU_ARCH}_${ADK_TARGET_LIBC}_${ADK_TARGET_SUFFIX}/lib/gcc .)
-	# fix linking g++ apps with libtool
 	@-test -d $(STAGING_TARGET_DIR)/lib32 && \
 		cd $(STAGING_TARGET_DIR)/lib32 && \
 		ln -sf libstdc++.so.6.0.18 libstdc++.so && \
@@ -218,7 +215,7 @@ $(WRKBUILD)/.installed: $(WRKBUILD)/.compiled
 		ln -sf libstdc++.so.6.0.18 libstdc++.so && \
 		ln -sf libstdc++.so.6.0.18 libstdc++.so.6
 	# cleanup unneeded docs
-	rm -rf $(STAGING_HOST_DIR)/share
+	rm -rf $(TOOLCHAIN_DIR)/usr/share
 	touch $@
 
 include ${TOPDIR}/mk/toolchain.mk
diff --git a/toolchain/glibc/Makefile b/toolchain/glibc/Makefile
index 4af17c3d7..996f9dd87 100644
--- a/toolchain/glibc/Makefile
+++ b/toolchain/glibc/Makefile
@@ -76,7 +76,7 @@ $(WRKBUILD)/.fixup:
 ifeq ($(ADK_TOOLCHAIN),y)
 	# strip target libs and host tools for toolchain builds
 	PATH="$(TARGET_PATH)" debug='0' prefix='${TARGET_CROSS}' ${BASH} ${SCRIPT_DIR}/rstrip.sh $(STAGING_TARGET_DIR)
-	debug='0' prefix=' ' ${BASH} ${SCRIPT_DIR}/rstrip.sh $(STAGING_HOST_DIR)/bin $(STAGING_HOST_DIR)/$(GNU_TARGET_NAME)/
+	debug='0' prefix=' ' ${BASH} ${SCRIPT_DIR}/rstrip.sh $(TOOLCHAIN_DIR)/usr
 endif
 	touch $@
 
diff --git a/toolchain/gmp/Makefile b/toolchain/gmp/Makefile
index 692216b97..3e6e6c626 100644
--- a/toolchain/gmp/Makefile
+++ b/toolchain/gmp/Makefile
@@ -15,9 +15,10 @@ $(WRKBUILD)/.configured:
 ifneq ($(OStype),Darwin)
 	(cd $(WRKBUILD); cp configfsf.guess config.guess)
 endif
-	(cd $(WRKBUILD); PATH="$(STAGING_HOST_DIR)/usr/bin:$$PATH" \
+	(cd $(WRKBUILD); \
+		PATH="$(STAGING_HOST_DIR)/usr/bin:$$PATH" \
 		./configure \
-		--prefix=$(STAGING_HOST_DIR) \
+		--prefix=$(STAGING_HOST_DIR)/usr \
 		--with-pic \
 		--disable-shared \
 		--enable-static \
diff --git a/toolchain/libelf/Makefile b/toolchain/libelf/Makefile
index c243cdd00..90bf4cb8d 100644
--- a/toolchain/libelf/Makefile
+++ b/toolchain/libelf/Makefile
@@ -14,7 +14,7 @@ $(WRKBUILD)/.headers:
 $(WRKBUILD)/.configured:
 	(cd $(WRKBUILD); \
 		$(WRKBUILD)/configure \
-		--prefix=$(STAGING_HOST_DIR) \
+		--prefix=$(STAGING_HOST_DIR)/usr \
 		--disable-nls \
 		--disable-shared \
 		--enable-static \
diff --git a/toolchain/mpc/Makefile b/toolchain/mpc/Makefile
index 81f5b151d..40e7f615e 100644
--- a/toolchain/mpc/Makefile
+++ b/toolchain/mpc/Makefile
@@ -14,8 +14,8 @@ $(WRKBUILD)/.headers:
 $(WRKBUILD)/.configured:
 	(cd $(WRKBUILD); \
 		$(WRKBUILD)/configure \
-		--prefix=$(STAGING_HOST_DIR) \
-		--with-gmp=$(STAGING_HOST_DIR) \
+		--prefix=$(STAGING_HOST_DIR)/usr \
+		--with-gmp=$(STAGING_HOST_DIR)/usr \
 		--disable-shared \
 		--enable-static \
 	);
diff --git a/toolchain/mpfr/Makefile b/toolchain/mpfr/Makefile
index 019d14d77..954040b85 100644
--- a/toolchain/mpfr/Makefile
+++ b/toolchain/mpfr/Makefile
@@ -15,7 +15,7 @@ $(WRKBUILD)/.headers:
 $(WRKBUILD)/.configured:
 	(cd $(WRKBUILD); \
 		$(WRKBUILD)/configure \
-		--prefix=$(STAGING_HOST_DIR) \
+		--prefix=$(STAGING_HOST_DIR)/usr \
 		--with-gmp-build=$(GMP_BUILD_DIR) \
 		--disable-shared \
 		--enable-static \
-- 
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