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authorBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2013-11-13 12:31:00 +0100
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2013-11-13 12:31:00 +0100
commit32ef09dd30bb2b8e1878afff755fc5b7000f24c7 (patch)
tree127164554c6fa1c837a992a74b9aca030aff673b
parentea269ccbb222c6913cff6fc3ebc87cc945df53a8 (diff)
buildsys: check LDFLAGS through driver
We run the linker through the compiler-driver, so we have to check linker flags through the driver, too. Otherwise we might check $LD's flags while we will run $CC's linker and those might be different beasts. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
-rw-r--r--Rules.mak14
1 files changed, 7 insertions, 7 deletions
diff --git a/Rules.mak b/Rules.mak
index 5108978e2..03935f90f 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -201,7 +201,7 @@ check_as=$(shell \
if $(CC) -Wa,$(1) -Wa,-Z -c -o /dev/null -xassembler /dev/null > /dev/null 2>&1; \
then echo "-Wa,$(1)"; fi)
check_ld=$(shell \
- if $(LD) $(1) -o /dev/null -b binary /dev/null > /dev/null 2>&1; \
+ if $(CC) -Wl,$(1) $(CFLAG_-nostdlib) -o /dev/null -Wl,-b,binary /dev/null > /dev/null 2>&1; \
then echo "$(1)"; fi)
# Use variable indirection here so that we can have variable
@@ -252,6 +252,8 @@ endef
ARFLAGS:=cr
+# Note: The check for -nostdlib has to be before all calls to check_ld
+$(eval $(call check-gcc-var,-nostdlib))
# Flags in OPTIMIZATION are used only for non-debug builds
@@ -557,11 +559,11 @@ endif
# well as the LD PIE flag (below) because we can't rely on
# gcc passing -pie if we used -fPIE. We need to directly use -pie
# instead of -Wl,-pie as gcc picks up the wrong startfile/endfile
-$(eval $(call cache-output-var,LDPIEFLAG,$(LD) --help 2>/dev/null | grep -q -- -pie && echo "-pie"))
+$(eval $(call cache-output-var,LDPIEFLAG,$(CC) -Wl$(comma)--help 2>/dev/null | grep -q -- -pie && echo "-pie"))
# Check for --as-needed support in linker
ifndef LD_FLAG_ASNEEDED
-_LD_FLAG_ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -- --as-needed)
+_LD_FLAG_ASNEEDED:=$(shell $(CC) -Wl,--help 2>/dev/null | grep -- --as-needed)
ifneq ($(_LD_FLAG_ASNEEDED),)
export LD_FLAG_ASNEEDED:=--as-needed
endif
@@ -585,7 +587,7 @@ link.asneeded = $(if $(findstring yy,$(CC_FLAG_ASNEEDED)$(CC_FLAG_NO_ASNEEDED)),
# Check for AS_NEEDED support in linker script (binutils>=2.16.1 has it)
ifndef ASNEEDED
-export ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -q -- --as-needed && echo "AS_NEEDED ( $(UCLIBC_LDSO) )" || echo "$(UCLIBC_LDSO)")
+export ASNEEDED:=$(shell $(CC) -Wl,--help 2>/dev/null | grep -q -- --as-needed && echo "AS_NEEDED ( $(UCLIBC_LDSO) )" || echo "$(UCLIBC_LDSO)")
# Only used in installed libc.so linker script
ifeq ($(UCLIBC_HAS_BACKTRACE),y)
@@ -594,7 +596,7 @@ UBACKTRACE_FULL_NAME := $(subst //,/,$(RUNTIME_PREFIX)$(MULTILIB_DIR)/$(UBACKTRA
else
UBACKTRACE_FULL_NAME := $(UBACKTRACE_DSO)
endif
-export UBACKTRACE_ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -q -- --as-needed && \
+export UBACKTRACE_ASNEEDED:=$(shell $(CC) -Wl,--help 2>/dev/null | grep -q -- --as-needed && \
echo "GROUP ( AS_NEEDED ( $(UBACKTRACE_FULL_NAME) ) )" || \
echo "GROUP ( $(UBACKTRACE_FULL_NAME) )")
else
@@ -641,8 +643,6 @@ else
SSP_CFLAGS := $(SSP_DISABLE_FLAGS)
endif
-$(eval $(call check-gcc-var,-nostdlib))
-
# Collect all CFLAGS components
CFLAGS := $(XWARNINGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \
-nostdinc -I$(top_builddir)include \