From 1ca571b6c2978bec66f897b6665ddbdaba82a26e Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Thu, 17 Sep 2015 13:07:48 +0000
Subject: [PATCH] tools/mtd-utils: avoid linking libm statically

Rework static linker flags to not link libm statically, this should fix the
build on CentOS where libm.a is not provided by the libc devel package.

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

SVN-Revision: 46989
---
 .../310-add-static-linking-option.patch       | 40 ++++++++++++++-----
 1 file changed, 30 insertions(+), 10 deletions(-)

diff --git a/tools/mtd-utils/patches/310-add-static-linking-option.patch b/tools/mtd-utils/patches/310-add-static-linking-option.patch
index 273aa85e146..810aea9a548 100644
--- a/tools/mtd-utils/patches/310-add-static-linking-option.patch
+++ b/tools/mtd-utils/patches/310-add-static-linking-option.patch
@@ -1,23 +1,43 @@
 --- a/common.mk
 +++ b/common.mk
-@@ -2,6 +2,11 @@ CC := $(CROSS)gcc
+@@ -2,6 +2,16 @@ CC := $(CROSS)gcc
  AR := $(CROSS)ar
  RANLIB := $(CROSS)ranlib
  
 +ifeq ($(STATIC),1)
-+  LD_STATIC_ON := -Wl,-Bstatic
-+  LD_STATIC_OFF := -Wl,-Bdynamic
++ define static_link
++  -Wl,-Bstatic $(1) -Wl,-Bdynamic
++ endef
++else
++ define static_link
++  $(1)
++ endef
 +endif
 +
  # Stolen from Linux build system
  comma = ,
  try-run = $(shell set -e; ($(1)) >/dev/null 2>&1 && echo "$(2)" || echo "$(3)")
-@@ -68,7 +73,7 @@ endef
+--- a/Makefile
++++ b/Makefile
+@@ -89,10 +89,10 @@ obj-mkfs.jffs2 = compr_rtime.o compr_zli
+ 	compr_lzma.o lzma/LzFind.o lzma/LzmaEnc.o lzma/LzmaDec.o \
+ 	compr.o rbtree.o
+ LDFLAGS_mkfs.jffs2 = $(ZLIBLDFLAGS) $(LZOLDFLAGS)
+-LDLIBS_mkfs.jffs2  = -lz $(LZOLDLIBS)
++LDLIBS_mkfs.jffs2  = $(call static_link,-lz $(LZOLDLIBS))
  
- %: %.o $(LDDEPS)
- 	$(call BECHO,LD)
--	$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_$(notdir $@)) -g -o $@ $^ $(LDLIBS) $(LDLIBS_$(notdir $@))
-+	$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_$(notdir $@)) -g -o $@ $(LD_STATIC_ON) $^ $(LDLIBS) $(LDLIBS_$(notdir $@)) $(LD_STATIC_OFF)
+ LDFLAGS_jffs2reader = $(ZLIBLDFLAGS) $(LZOLDFLAGS)
+-LDLIBS_jffs2reader  = -lz $(LZOLDLIBS)
++LDLIBS_jffs2reader  = $(call static_link,-lz $(LZOLDLIBS))
  
- $(BUILDDIR)/%.a:
- 	$(call BECHO,AR)
+ $(foreach v,$(MTD_BINS),$(eval $(call mkdep,,$(v))))
+ 
+@@ -119,7 +119,7 @@ else
+   XZLDLIBS = -llzma
+ endif
+ 
+-LDLIBS_mkfs.ubifs = -lz $(LZOLDLIBS) $(XZLDLIBS) -lm -luuid
++LDLIBS_mkfs.ubifs = $(call static_link,-lz $(LZOLDLIBS) $(XZLDLIBS)) -lm $(call static_link,-luuid)
+ $(call mkdep,mkfs.ubifs/,mkfs.ubifs,,ubi-utils/libubi.a)
+ 
+ #
-- 
2.30.2