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Merge pull request #90 from scialex/cross-compile

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Add support for cross compiling with `make ARCH=name`
This commit is contained in:
Viral B. Shah 2015-03-02 09:00:26 +05:30
commit ef29d06db1
4 changed files with 50 additions and 11 deletions
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43
Make.inc
View file

@ -38,7 +38,9 @@ CC = gcc
CFLAGS_add += -fno-gnu89-inline
endif
ARCH := $(shell $(CC) -dumpmachine | sed "s/\([^-]*\).*$$/\1/")
ARCH ?= $(shell $(CC) -dumpmachine | sed "s/\([^-]*\).*$$/\1/")
ARCH_ORIGIN := $(origin ARCH)
ifeq ($(ARCH),mingw32)
$(error "the mingw32 compiler you are using fails the openblas testsuite. please see the Julia README.windows.md document for a replacement")
endif
@ -48,12 +50,16 @@ CFLAGS_add += -std=c99 -Wall -O3 -I$(OPENLIBM_HOME) -I$(OPENLIBM_HOME)/include -
default: all
%.c.o: %.c
$(CC) $(CPPFLAGS) $(CFLAGS_add) $(CFLAGS) -c $< -o $@
$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_add) -c $< -o $@
%.S.o: %.S
$(CC) $(SFLAGS) $(filter -m% -B% -I% -D%,$(CFLAGS_add)) -c $< -o $@
$(CC) $(SFLAGS) $(SFLAGS_add) $(filter -m% -B% -I% -D%,$(CFLAGS_add)) -c $< -o $@
# OS-specific stuff
REAL_ARCH := $(ARCH)
ifeq ($(findstring arm,$(ARCH)),arm)
override ARCH := arm
endif
ifeq ($(ARCH),i386)
override ARCH := i387
endif
@ -102,3 +108,34 @@ SHLIB_EXT = dylib
SONAME_FLAG = -install_name
CFLAGS_add+=-fPIC
endif
# The target specific FLAGS_add
ifeq ($(ARCH_ORIGIN),file)
CFLAGS_add_TARGET_$(ARCH) :=
SFLAGS_add_TARGET_$(ARCH) :=
LDFLAGS_add_TARGET_$(ARCH) :=
else
ifeq ($(ARCH),i387)
CFLAGS_add_TARGET_$(ARCH) := -m32 -march=$(REAL_ARCH)
SFLAGS_add_TARGET_$(ARCH) := -m32 -march=$(REAL_ARCH)
LDFLAGS_add_TARGET_$(ARCH) := -m32 -march=$(REAL_ARCH)
endif
CFLAGS_add_TARGET_x86_64 := -m64
SFLAGS_add_TARGET_x86_64 := -m64
LDFLAGS_add_TARGET_x86_64 := -m64
# Arm
ifeq ($(ARCH),arm)
ifneq ($(REAL_ARCH),arm)
CFLAGS_add_TARGET_$(ARCH) := -march=$(REAL_ARCH)
SFLAGS_add_TARGET_$(ARCH) := -march=$(REAL_ARCH)
LDFLAGS_add_TARGET_$(ARCH) := -march=$(REAL_ARCH)
else
$(error No known generic arm cflags. Please specify arch type)
endif
endif
endif
# Actually finish setting the FLAGS_add
CFLAGS_add += $(CFLAGS_add_TARGET_$(ARCH))
LDFLAGS_add += $(LDFLAGS_add_TARGET_$(ARCH))
SFLAGS_add += $(SFLAGS_add_TARGET_$(ARCH))

4
Makefile
View file

@ -30,9 +30,9 @@ libopenlibm.a: $(OBJS)
$(AR) -rcs libopenlibm.a $(OBJS)
libopenlibm.$(SHLIB_EXT): $(OBJS)
ifeq ($(OS),WINNT)
$(CC) -shared $(OBJS) $(LDFLAGS) -Wl,$(SONAME_FLAG),libopenlibm.$(SHLIB_EXT) -o libopenlibm.$(SHLIB_EXT)
$(CC) -shared $(OBJS) $(LDFLAGS) $(LDFLAGS_add) -Wl,$(SONAME_FLAG),libopenlibm.$(SHLIB_EXT) -o libopenlibm.$(SHLIB_EXT)
else
$(CC) -shared $(OBJS) $(LDFLAGS) -Wl,$(SONAME_FLAG),libopenlibm.$(SHLIB_EXT).$(SOMAJOR) -o libopenlibm.$(SHLIB_EXT).$(SOMAJOR).$(SOMINOR)
$(CC) -shared $(OBJS) $(LDFLAGS) $(LDFLAGS_add) -Wl,$(SONAME_FLAG),libopenlibm.$(SHLIB_EXT).$(SOMAJOR) -o libopenlibm.$(SHLIB_EXT).$(SOMAJOR).$(SOMINOR)
@-ln -sf libopenlibm.$(SHLIB_EXT).$(SOMAJOR).$(SOMINOR) libopenlibm.$(SHLIB_EXT).$(SOMAJOR)
@-ln -sf libopenlibm.$(SHLIB_EXT).$(SOMAJOR).$(SOMINOR) libopenlibm.$(SHLIB_EXT)
endif

2
README.md
View file

@ -25,3 +25,5 @@ includes experimental support for ARM.
Linux and Windows.
3. Use `make USECLANG=1` to build with clang. This is the default on OS X
and FreeBSD.
4. Use `make ARCH=i386` to build for i386. Other supported architectures are
i486, i586, i686, x86_64, and various arm architectures.

12
test/Makefile
View file

@ -6,22 +6,22 @@ all: test-double test-float # test-double-system test-float-system
bench: bench-syslibm bench-openlibm
test-double: test-double.c libm-test.c
$(CC) $(CFLAGS) -g $@.c -D__BSD_VISIBLE -I ../include -I../src ../libopenlibm.a -o $@
$(CC) $(CFLAGS) $(CFLAGS_add_TARGET_$(ARCH)) -g $@.c -D__BSD_VISIBLE -I ../include -I../src ../libopenlibm.a -o $@
test-float: test-float.c libm-test.c
$(CC) $(CFLAGS) -g $@.c -D__BSD_VISIBLE -I ../include -I../src ../libopenlibm.a -o $@
$(CC) $(CFLAGS) $(CFLAGS_add_TARGET_$(ARCH)) -g $@.c -D__BSD_VISIBLE -I ../include -I../src ../libopenlibm.a -o $@
test-double-system: test-double.c libm-test.c
$(CC) $(CFLAGS) -g $< -DSYS_MATH_H -lm -o $@
$(CC) $(CFLAGS) $(CFLAGS_add_TARGET_$(ARCH)) -g $< -DSYS_MATH_H -lm -o $@
test-float-system: test-float.c libm-test.c
$(CC) $(CFLAGS) -g $< -DSYS_MATH_H -lm -o $@
$(CC) $(CFLAGS) $(CFLAGS_add_TARGET_$(ARCH)) -g $< -DSYS_MATH_H -lm -o $@
bench-openlibm: libm-bench.cpp
$(CC) $(CFLAGS) -O2 $< ../libopenlibm.a -o $@
$(CC) $(CFLAGS) $(CFLAGS_add_TARGET_$(ARCH)) -O2 $< ../libopenlibm.a -o $@
bench-syslibm: libm-bench.cpp
$(CC) $(CFLAGS) -O2 $< -lm -o $@
$(CC) $(CFLAGS) $(CFLAGS_add_TARGET_$(ARCH)) -O2 $< -lm -o $@
clean:
rm -fr test-double test-float test-double-system test-float-system bench-openlibm bench-syslibm *.dSYM