makefile: unify cross with native builds

supports building cross compilers on the fly without need
for configure --enable-cross

   $ make cross          # all compilers
   $ make cross-TARGET   # only TARGET-compiler & its libtcc1.a

with TARGET one from
   i386 x86_64 i386-win32 x86_64-win32 arm arm64 arm-wince c67

Type 'make help' for more information

Author: grischka

Makefile

@@ -17,6 +17,11 @@ ST_FUNC void gen_le32(int c);
 #else
 /*************************************************************/
 
+static void asm_error(void)
+{
+    tcc_error("ARM asm not implemented.");
+}
+
 /* XXX: make it faster ? */
 ST_FUNC void g(int c)
 {
@@ -49,10 +54,12 @@ ST_FUNC void gen_expr32(ExprValue *pe)
 
 ST_FUNC void asm_opcode(TCCState *s1, int opcode)
 {
+    asm_error();
 }
 
 ST_FUNC void subst_asm_operand(CString *add_str, SValue *sv, int modifier)
 {
+    asm_error();
 }
 
 /* generate prolog and epilog code for asm statement */
@@ -61,21 +68,25 @@ ST_FUNC void asm_gen_code(ASMOperand *operands, int nb_operands,
                          uint8_t *clobber_regs,
                          int out_reg)
 {
+    asm_error();
 }
 
 ST_FUNC void asm_compute_constraints(ASMOperand *operands,
                                     int nb_operands, int nb_outputs,
                                     const uint8_t *clobber_regs,
                                     int *pout_reg)
 {
+    asm_error();
 }
 
 ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str)
 {
+    asm_error();
 }
 
 ST_FUNC int asm_parse_regvar (int t)
 {
+    asm_error();
     return -1;
 }
 

arm-asm.c

@@ -1,5 +1,4 @@
-#include <stdlib.h>
-#include <stdio.h>
+#include <tcclib.h>
 
 int fib(n)
 {

examples/ex3.c

@@ -5,76 +5,71 @@
 TOP = ..
 include $(TOP)/Makefile
 VPATH = $(TOPSRC)/lib $(TOPSRC)/win32/lib
+T = $(or $(CROSS_TARGET),$(NATIVE_TARGET),unknown)
+X = $(if $(CROSS_TARGET),$(CROSS_TARGET)-)
 
-ifneq ($(CROSS),yes)
- TCC = $(TOP)/tcc$(EXESUF)
- OUT = ../libtcc1.a
+TCC = $(TOP)/$(X)tcc$(EXESUF)
+XCC = $(TCC)
+XAR = $(TCC) -ar
+XFLAGS-unx = -B$(TOPSRC)
+XFLAGS-win = -B$(TOPSRC)/win32 -I$(TOPSRC)/include
+XFLAGS = $(XFLAGS$(XCFG))
+XCFG = $(or $(findstring -win,$T),-unx)
+
+ifeq ($(X),)
  BCHECK_O = bcheck.o
-else
- TCC = $(TOP)/$(TARGET)-tcc$(EXESUF)
- OUT = libtcc1-$(TARGET).a
+ ifeq "$T" "arm"
+  XCC = $(CC)
+  XAR = $(AR)
+  XFLAGS = $(CFLAGS) -fPIC
+ endif
 endif
 
-XCC = $(TCC) -B$(TOPSRC)
-XAR = $(TCC) -ar
+ifeq ($(TARGETOS),Darwin)
+ XFLAGS += -D_ANSI_SOURCE
+ BCHECK_O =
+endif
 
 I386_O = libtcc1.o alloca86.o alloca86-bt.o $(BCHECK_O)
 X86_64_O = libtcc1.o alloca86_64.o alloca86_64-bt.o $(BCHECK_O)
 ARM_O = libtcc1.o armeabi.o alloca-arm.o
 ARM64_O = lib-arm64.o
 WIN_O = crt1.o crt1w.o wincrt1.o wincrt1w.o dllcrt1.o dllmain.o
 
-ifeq "$(TARGET)" "i386-win32"
- OBJ = $(I386_O) chkstk.o $(WIN_O)
- TGT = -DTCC_TARGET_I386 -DTCC_TARGET_PE
- XCC = $(TCC) -B$(TOPSRC)/win32 -I$(TOPSRC)/include
-else ifeq "$(TARGET)" "x86_64-win32"
- OBJ = $(X86_64_O) chkstk.o $(WIN_O)
- TGT = -DTCC_TARGET_X86_64 -DTCC_TARGET_PE
- XCC = $(TCC) -B$(TOPSRC)/win32 -I$(TOPSRC)/include
-else ifeq "$(TARGET)" "arm-wince"
- OBJ = $(ARM_O) $(WIN_O)
- TGT = -DTCC_TARGET_ARM -DTCC_TARGET_PE
- XCC = $(TCC) -B$(TOPSRC)/win32 -I$(TOPSRC)/include
-else ifeq "$(TARGET)" "i386"
- OBJ = $(I386_O)
- TGT = -DTCC_TARGET_I386
-else ifeq "$(TARGET)" "x86_64"
- OBJ = $(X86_64_O)
- TGT = -DTCC_TARGET_X86_64
-else ifeq "$(TARGET)" "arm-eabihf"
- OBJ = $(ARM_O)
- TGT = -DTCC_TARGET_ARM
- ifneq ($(CROSS),yes)
- # using gcc, need asm
- XCC = $(CC)
- XFLAGS = $(CFLAGS) -fPIC
- XAR = $(AR)
- endif
-else ifeq "$(TARGET)" "arm64"
- OBJ = $(ARM64_O)
- TGT = -DTCC_TARGET_ARM64
-else ifneq "$(TARGET)" ""
- $(error libtcc1.a not supported on target '$(TARGET)')
-endif
+OBJ-i386 = $(I386_O)
+TGT-i386 = -DTCC_TARGET_I386
 
-ifeq ($(TARGETOS),Darwin)
- XFLAGS += -D_ANSI_SOURCE
- BCHECK_O =
-endif
+OBJ-x86_64 = $(X86_64_O)
+TGT-x86_64 = -DTCC_TARGET_X86_64
+
+OBJ-arm = $(ARM_O)
+TGT-arm = -DTCC_TARGET_ARM
+
+OBJ-arm64 = $(ARM64_O)
+TGT-arm64 = -DTCC_TARGET_ARM64
 
-all : $(OUT)
+OBJ-i386-win32 = $(I386_O) chkstk.o $(WIN_O)
+TGT-i386-win32 = -DTCC_TARGET_I386 -DTCC_TARGET_PE
 
-$(OUT) : $(patsubst %.o,%-$(TARGET).o,$(OBJ))
+OBJ-x86_64-win32 = $(X86_64_O) chkstk.o $(WIN_O)
+TGT-x86_64-win32 = -DTCC_TARGET_X86_64 -DTCC_TARGET_PE
+
+OBJ-arm-wince = $(ARM_O) $(WIN_O)
+TGT-arm-wince = -DTCC_TARGET_ARM -DTCC_TARGET_PE
+
+all : $(BIN)
+
+$(BIN) : $(patsubst %.o,$(X)%.o,$(OBJ-$T))
 	$(XAR) rcs $@ $^
-%-$(TARGET).o : %.c
-	$(XCC) -c $< -o $@ $(TGT) $(XFLAGS)
-%-$(TARGET).o : %.S
-	$(XCC) -c $< -o $@ $(TGT) $(XFLAGS)
 
-crt1w-$(TARGET).o : crt1.c
-wincrt1w-$(TARGET).o : wincrt1.c
-bcheck-$(TARGET).o : XFLAGS += -w
+$(X)%.o : %.c
+	$(XCC) -c $< -o $@ $(TGT-$T) $(XFLAGS)
+
+$(X)%.o : %.S
+	$(XCC) -c $< -o $@ $(TGT-$T) $(XFLAGS)
+
+$(X)crt1w.o : crt1.c
+$(X)wincrt1w.o : wincrt1.c
 
 clean :
-	rm -f *.a *.o $(OUT)
+	rm -f *.a *.o $(BIN)

lib/Makefile

@@ -49,7 +49,7 @@
     || defined(__DragonFly__) || defined(__dietlibc__) \
     || defined(__UCLIBC__) || defined(__OpenBSD__) || defined(__NetBSD__) \
     || defined(_WIN32) || defined(TCC_UCLIBC)
-#warning Bound checking does not support malloc (etc.) in this environment.
+//#warning Bound checking does not support malloc (etc.) in this environment.
 #undef CONFIG_TCC_MALLOC_HOOKS
 #undef HAVE_MEMALIGN
 #endif

lib/bcheck.c

@@ -1519,7 +1519,7 @@ ST_FUNC void gen_opl(int op);
 /* ------------ arm-gen.c ------------ */
 #ifdef TCC_TARGET_ARM
 #if defined(TCC_ARM_EABI) && !defined(CONFIG_TCC_ELFINTERP)
-ST_FUNC char *default_elfinterp(struct TCCState *s);
+PUB_FUNC char *default_elfinterp(struct TCCState *s);
 #endif
 ST_FUNC void arm_init(struct TCCState *s);
 ST_FUNC void gen_cvt_itof1(int t);

tcc.h

@@ -17,6 +17,7 @@ TESTS = \
  dlltest \
  abitest \
  vla_test-run \
+ cross-test \
  tests2-dir \
  pp-dir
 
@@ -45,23 +46,22 @@ endif
 ifeq (,$(filter i386 x86_64,$(ARCH)))
  TESTS := $(filter-out dlltest,$(TESTS))
 endif
+ifndef CONFIG_CROSS
+ TESTS := $(filter-out cross-%,$(TESTS))
+endif
 
-# run local version of tcc with local libraries and includes
-TCCFLAGS = -B$(TOP) -I$(TOPSRC)/include -I$(TOPSRC) -I$(TOP)
 ifdef CONFIG_WIN32
- TCCFLAGS = -B$(TOPSRC)/win32 -I$(TOPSRC)/include -I$(TOPSRC) -I$(TOP) -L$(TOP)
- PATH := $(CURDIR)/$(TOP):$(PATH) # for libtcc_test to find libtcc.dll
+ PATH := $(CURDIR)/$(TOP);$(PATH) # for libtcc_test to find libtcc.dll
 endif
 
-TCC = $(TOP)/tcc $(TCCFLAGS)
-RUN_TCC = $(NATIVE_DEFINES) -DONE_SOURCE -run $(TOPSRC)/tcc.c $(TCCFLAGS)
-
 ifeq ($(TARGETOS),Darwin)
  CFLAGS += -Wl,-flat_namespace,-undefined,warning
  TCCFLAGS += -D_ANSI_SOURCE
  export MACOSX_DEPLOYMENT_TARGET:=10.2
 endif
 
+RUN_TCC = $(NATIVE_DEFINES) -DONE_SOURCE -run $(TOPSRC)/tcc.c $(TCCFLAGS)
+
 DISAS = objdump -d
 
 all test : clean-s $(TESTS)
@@ -236,6 +236,16 @@ vla_test-run: vla_test$(EXESUF)
 	@echo ------------ $@ ------------
 	./vla_test$(EXESUF)
 
+cross-test :
+	@echo ------------ $@ ------------
+	$(TOP)/i386-tcc$(EXESUF) $(TCCFLAGS-unx) -c $(TOPSRC)/examples/ex3.c && echo "ok"
+	$(TOP)/x86_64-tcc$(EXESUF) $(TCCFLAGS-unx) -c $(TOPSRC)/examples/ex3.c && echo "ok"
+	$(TOP)/arm-tcc$(EXESUF) $(TCCFLAGS-unx) -c $(TOPSRC)/examples/ex3.c && echo "ok"
+	$(TOP)/c67-tcc$(EXESUF) $(TCCFLAGS-unx) -c $(TOPSRC)/examples/ex3.c && echo "ok"
+	$(TOP)/i386-win32-tcc$(EXESUF) $(TCCFLAGS-win) $(TOPSRC)/win32/examples/hello_win.c && echo "ok"
+	$(TOP)/x86_64-win32-tcc$(EXESUF) $(TCCFLAGS-win) $(TOPSRC)/win32/examples/hello_win.c && echo "ok"
+	$(TOP)/arm-wince-tcc$(EXESUF) $(TCCFLAGS-win) -c $(TOPSRC)/win32/examples/hello_win.c && echo "ok"
+
 # targets for development
 %.bin: %.c tcc
 	$(TCC) -g -o $@ $<

tests/Makefile

@@ -3,11 +3,10 @@
 #
 
 TOP = ../..
-include $(TOP)/config.mak
+include $(TOP)/Makefile
 SRC = $(TOPSRC)/tests/pp
 VPATH = $(SRC)
 
-TCC = ../../tcc
 files = $(patsubst %.$1,%.test,$(notdir $(wildcard $(SRC)/*.$1)))
 TESTS = $(call files,c) $(call files,S)
 

tests/pp/Makefile

@@ -1,15 +1,8 @@
 TOP = ../..
-include $(TOP)/config.mak
+include $(TOP)/Makefile
 SRC = $(TOPSRC)/tests/tests2
 VPATH = $(SRC)
 
-# run local version of tcc with local libraries and includes
-TCCFLAGS = -B$(TOP) -I$(TOPSRC)/include
-ifdef CONFIG_WIN32
- TCCFLAGS = -B$(TOPSRC)/win32 -I$(TOPSRC)/include -L$(TOP)
-endif
-TCC = $(TOP)/tcc $(TCCFLAGS)
-
 TESTS = $(patsubst %.c,%.test,$(sort $(notdir $(wildcard $(SRC)/*.c))))
 
 # 34_array_assignment.test -- array assignment is not in C standard

tests/tests2/Makefile

@@ -83,8 +83,12 @@
 #define _M_IX86 300 /* Visual Studio */
 #define WIN32 1
 #define _USE_32BIT_TIME_T
+#ifdef __arm__
+#define __TRY__
+#else
 #define __TRY__ void __try__(void**), *_sehrec[6]; __try__(_sehrec);
 #endif
+#endif
 
 /* in stddef.h */
 #define _SIZE_T_DEFINED