[Buildroot] [PATCH] HOST_DIR/lib: symlink respectively to lib32/64

[Matt Weber]

Modeled after system/system.mk creation of
TARGET_DIR equivalent.

Discovered the issue on a RHEL7.4 machine where
the cmake build dynamically selected HOST_DIR/lib64
as the installation path for the lzo2 library.

Fixes failures like the following:
host-mtd
http://autobuild.buildroot.net/results/d31/d31581d2e60f35cf70312683df99c768e2ea8516/

host-squashfs
http://autobuild.buildroot.net/results/d9c/d9c95231ac774ed71580754a15ebb3b121764310/

Signed-off-by: Matthew Weber <matthew.weber at rockwellcollins.com>
---
 Makefile | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 9b09589..d51f8ce 100644
--- a/Makefile
+++ b/Makefile
@@ -542,7 +542,7 @@ endif
 
 .PHONY: dirs
 dirs: $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
-	$(HOST_DIR) $(HOST_DIR)/usr $(BINARIES_DIR)
+	$(HOST_DIR) $(HOST_DIR)/usr $(HOST_DIR)/lib $(BINARIES_DIR)
 
 $(BUILD_DIR)/buildroot-config/auto.conf: $(BR2_CONFIG)
 	$(MAKE1) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig
@@ -565,6 +565,15 @@ sdk: world
 $(HOST_DIR)/usr: $(HOST_DIR)
 	@ln -snf . $@
 
+$(HOST_DIR)/lib: $(HOST_DIR)
+# Make a symlink lib32->lib or lib64->lib as appropriate.
+# MIPS64/n32 requires lib32 even though it's a 64-bit arch.
+ifeq ($(BR2_ARCH_IS_64)$(BR2_MIPS_NABI32),y)
+	@ln -snf lib $@64
+else
+	@ln -snf lib $@32
+endif
+
 # Populating the staging with the base directories is handled by the skeleton package
 $(STAGING_DIR):
 	@mkdir -p $(STAGING_DIR)
-- 
1.9.1