BB: uclibc++: make g++-uc* wrappers relocatable

The g++-uc wrapper hardcodes $(STAGING_DIR) and $(TOOLCHAIN_DIR) paths which
will not work outside of the original build environment.

Replace the hardcoded staging_dir occurences with paths relative to the
$STAGING_DIR environment variable to make the g++-uc* wrappers usable in an
SDK environment.

Fixes the libdb47 build failure reported at
  https://lists.openwrt.org/pipermail/openwrt-devel/2015-April/032455.html

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
Backport of r46162

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@46164 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/libs/uclibc++/Makefile b/package/libs/uclibc++/Makefile
index 38e8a99f9f44b7c47dfa21c2aeaf328fcbc172f4..f855cd216ff35cc4d068f862fe1ad4c84f98bf0f 100644 (file)
--- a/package/libs/uclibc++/Makefile
+++ b/package/libs/uclibc++/Makefile
@@ -74,8 +74,9 @@ define Build/InstallDev
        $(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/g++-uc $(TOOLCHAIN_DIR)/bin/
        $(CP) $(PKG_INSTALL_DIR)/include/* $(1)/usr/include/uClibc++/
        $(CP) $(PKG_INSTALL_DIR)/lib/libuClibc++*.{a,so}* $(1)/usr/lib/
-       $(SED) 's|-I/include/|-I$(STAGING_DIR)/usr/include/uClibc++/|g' $(TOOLCHAIN_DIR)/bin/g++-uc
-       $(SED) 's|-L/lib/|-L$(STAGING_DIR)/usr/lib/|g' $(TOOLCHAIN_DIR)/bin/g++-uc
+       $(SED) 's!\(^\|[[:space:]]\)-[IL]$(TOOLCHAIN_DIR)/[^[:space:]]*!!g' $(TOOLCHAIN_DIR)/bin/g++-uc
+       $(SED) 's|-I/include/|-I$$$${STAGING_DIR:-$(STAGING_DIR)}/usr/include/uClibc++/|g' $(TOOLCHAIN_DIR)/bin/g++-uc
+       $(SED) 's|-L/lib/|-L$$$${STAGING_DIR:-$(STAGING_DIR)}/lib/|g' $(TOOLCHAIN_DIR)/bin/g++-uc
 # add another wrapper which links against both uClibc++ and libstdc++ 
        $(INSTALL_BIN) $(TOOLCHAIN_DIR)/bin/g++-uc $(TOOLCHAIN_DIR)/bin/g++-uc+std
        $(SED) 's|^WRAPPER_INCLUDEDIR=.*||g' $(TOOLCHAIN_DIR)/bin/g++-uc+std