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fix breakage when user overrides CFLAGS on the make command line

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these per-target CFLAGS adjustments are mandatory additions to the
command line for building the affected targets, not part of the
user-provided CFLAGS for tuning. my intent was always that the
variable append operations would take place after user settings, but
when a variable is set on the command line, it overrides all
definitions in the makefile, including target-specific ones.

based on patch by Szabolcs Nagy.
This commit is contained in:
Rich Felker 2015-10-22 23:41:35 -04:00
parent 615629bd6f
commit be76cdcf81
1 changed files with 4 additions and 4 deletions

8
Makefile
View file

@ -94,22 +94,22 @@ crt/crt1.o crt/Scrt1.o crt/rcrt1.o src/ldso/dlstart.lo: $(wildcard arch/$(ARCH)/
crt/rcrt1.o: src/ldso/dlstart.c
crt/Scrt1.o crt/rcrt1.o: CFLAGS += -fPIC
crt/Scrt1.o crt/rcrt1.o: CFLAGS_ALL += -fPIC
OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=src/%))
$(OPTIMIZE_SRCS:%.c=%.o) $(OPTIMIZE_SRCS:%.c=%.lo): CFLAGS += -O3
MEMOPS_SRCS = src/string/memcpy.c src/string/memmove.c src/string/memcmp.c src/string/memset.c
$(MEMOPS_SRCS:%.c=%.o) $(MEMOPS_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_MEMOPS)
$(MEMOPS_SRCS:%.c=%.o) $(MEMOPS_SRCS:%.c=%.lo): CFLAGS_ALL += $(CFLAGS_MEMOPS)
NOSSP_SRCS = $(wildcard crt/*.c) \
src/env/__libc_start_main.c src/env/__init_tls.c \
src/thread/__set_thread_area.c src/env/__stack_chk_fail.c \
src/string/memset.c src/string/memcpy.c \
src/ldso/dlstart.c src/ldso/dynlink.c
$(NOSSP_SRCS:%.c=%.o) $(NOSSP_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_NOSSP)
$(NOSSP_SRCS:%.c=%.o) $(NOSSP_SRCS:%.c=%.lo): CFLAGS_ALL += $(CFLAGS_NOSSP)
$(CRT_LIBS:lib/%=crt/%): CFLAGS += -DCRT
$(CRT_LIBS:lib/%=crt/%): CFLAGS_ALL += -DCRT
# This incantation ensures that changes to any subarch asm files will
# force the corresponding object file to be rebuilt, even if the implicit