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Makefile: use ifdef/ifndef

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This commit is contained in:
Eric Biggers 2016-05-22 13:14:09 -05:00
parent 7e19d17e49
commit aaadf1421a
1 changed files with 13 additions and 13 deletions
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26
Makefile
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@ -76,32 +76,32 @@ LIB_HEADERS := $(wildcard lib/*.h)
LIB_SRC := lib/aligned_malloc.c lib/deflate_decompress.c lib/x86_cpu_features.c
DECOMPRESSION_ONLY :=
ifeq ($(DECOMPRESSION_ONLY),)
ifndef DECOMPRESSION_ONLY
LIB_SRC += lib/deflate_compress.c
endif
DISABLE_ZLIB :=
ifeq ($(DISABLE_ZLIB),)
ifndef DISABLE_ZLIB
LIB_SRC += lib/adler32.c lib/zlib_decompress.c
ifeq ($(DECOMPRESSION_ONLY),)
ifndef DECOMPRESSION_ONLY
LIB_SRC += lib/zlib_compress.c
endif
endif
DISABLE_GZIP :=
ifeq ($(DISABLE_GZIP),)
ifndef DISABLE_GZIP
LIB_SRC += lib/crc32.c lib/gzip_decompress.c
ifeq ($(DECOMPRESSION_ONLY),)
ifndef DECOMPRESSION_ONLY
LIB_SRC += lib/gzip_compress.c
endif
endif
LIB_OBJ := $(LIB_SRC:.c=.o)
LIB_PIC_OBJ := $(LIB_SRC:.c=.pic.o)
ifeq ($(PIC_REQUIRED),)
SHLIB_OBJ := $(LIB_OBJ)
else
ifdef PIC_REQUIRED
SHLIB_OBJ := $(LIB_PIC_OBJ)
else
SHLIB_OBJ := $(LIB_OBJ)
endif
# Compile position dependent library object files
@ -170,14 +170,14 @@ gzip$(PROG_SUFFIX):programs/gzip.o $(PROG_COMMON_OBJ) $(STATIC_LIB)
ALL_TARGETS += gzip$(PROG_SUFFIX)
ifeq ($(HARD_LINKS),)
# No hard links; copy gzip to gunzip
gunzip$(PROG_SUFFIX):gzip$(PROG_SUFFIX)
$(QUIET_CP) cp -f $< $@
else
ifdef HARD_LINKS
# Hard link gunzip to gzip
gunzip$(PROG_SUFFIX):gzip$(PROG_SUFFIX)
$(QUIET_LN) ln -f $< $@
else
# No hard links; copy gzip to gunzip
gunzip$(PROG_SUFFIX):gzip$(PROG_SUFFIX)
$(QUIET_CP) cp -f $< $@
endif
ALL_TARGETS += gunzip$(PROG_SUFFIX)