win32/64: msys2 support

Support ./configure && make under msys2 (a new msys fork)
on win32 and win64.

Get rid of CONFIG_WIN64 make-var. (On windows, WIN32 in
general is used for both 32 and 64 bit platforms)

Also:
- cleanup win32/build-tcc.bat
- adjust win32/(doc/)tcc-win32.tx

Makefile

@@ -28,9 +28,6 @@ LINK_LIBTCC =
 LIBS =
 
 ifdef CONFIG_WIN32
- ifeq ($(ARCH),x86-64)
-  CONFIG_WIN64=yes
- endif
  STRIP_BINARIES = yes
  LIBTCC = libtcc.dll
 else
@@ -93,18 +90,18 @@ ARM_FILES = $(CORE_FILES) arm-gen.c
 ARM64_FILES = $(CORE_FILES) arm64-gen.c
 C67_FILES = $(CORE_FILES) c67-gen.c tcccoff.c
 
-ifdef CONFIG_WIN64
-PROGS+=tiny_impdef$(EXESUF)
+ifdef CONFIG_WIN32
+ PROGS+=tiny_impdef$(EXESUF) tiny_libmaker$(EXESUF)
+ifeq ($(ARCH),x86-64)
  NATIVE_FILES=$(WIN64_FILES)
-PROGS_CROSS=$(WIN32_CROSS) $(I386_CROSS) $(X64_CROSS) $(ARM_CROSS) $(ARM64_CROSS) $(C67_CROSS) $(WINCE_CROSS)
+ PROGS_CROSS=$(WIN32_CROSS)
  LIBTCC1_CROSS=lib/i386-win32/libtcc1.a
-
-else ifdef CONFIG_WIN32
-PROGS+=tiny_impdef$(EXESUF)
+else
  NATIVE_FILES=$(WIN32_FILES)
-PROGS_CROSS=$(WIN64_CROSS) $(I386_CROSS) $(X64_CROSS) $(ARM_CROSS) $(ARM64_CROSS) $(C67_CROSS) $(WINCE_CROSS)
+ PROGS_CROSS=$(WIN64_CROSS)
  LIBTCC1_CROSS=lib/x86_64-win32/libtcc1.a
-
+endif
+ PROGS_CROSS+=$(X64_CROSS) $(ARM_CROSS) $(ARM64_CROSS) $(C67_CROSS) $(WINCE_CROSS)
 else ifeq ($(ARCH),i386)
 NATIVE_FILES=$(I386_FILES)
 PROGS_CROSS=$(X64_CROSS) $(WIN32_CROSS) $(WIN64_CROSS) $(ARM_CROSS) $(ARM64_CROSS) $(C67_CROSS) $(WINCE_CROSS)

configure

@@ -50,6 +50,7 @@ cpu=
 targetos=`uname`
 case $targetos in
   MINGW32*)  mingw32=yes;;
+  MSYS*)     mingw32=yes;;
   DragonFly) noldl=yes;;
   OpenBSD)   noldl=yes;;
   FreeBSD)   noldl=yes;;

lib/Makefile

@@ -8,11 +8,12 @@ VPATH = $(TOPSRC)/lib $(TOPSRC)/win32/lib
 
 ifndef TARGET
  # we're building the native libtcc1.a
- ifdef CONFIG_WIN64
+ ifdef CONFIG_WIN32
+  ifeq ($(ARCH),x86-64)
    TARGET = x86_64-win32
-  # using tcc
- else ifdef CONFIG_WIN32
+  else
    TARGET = i386-win32
+  endif
   # using tcc
  else ifeq ($(ARCH),i386)
   TARGET = i386

win32/build-tcc.bat

@@ -5,19 +5,17 @@
 @set /p VERSION= < ..\VERSION
 echo>..\config.h #define TCC_VERSION "%VERSION%"
 
-@if _%1_==_AMD64_ shift /1 && goto x86_64
-@if _%1_==_x64_ shift /1 && goto x86_64
+@if _%PROCESSOR_ARCHITECTURE%_==_AMD64_ goto x86_64
+@if _%PROCESSOR_ARCHITEW6432%_==_AMD64_ goto x86_64
 
 @set target=-DTCC_TARGET_PE -DTCC_TARGET_I386
-@set CC=gcc -Os -s -fno-strict-aliasing
-@if _%1_==_debug_ set CC=gcc -g -ggdb
+@set CC=gcc -m32 -Os -s -fno-strict-aliasing
 @set P=32
 @goto tools
 
 :x86_64
 @set target=-DTCC_TARGET_PE -DTCC_TARGET_X86_64
-@set CC=x86_64-w64-mingw32-gcc -Os -s -fno-strict-aliasing
-@if _%1_==_debug_ set CC=x86_64-w64-mingw32-gcc -g -ggdb
+@set CC=gcc -m64 -Os -s -fno-strict-aliasing
 @set P=64
 @goto tools
 
@@ -36,6 +34,8 @@ tiny_impdef libtcc.dll -o libtcc/libtcc.def
 
 :copy_std_includes
 copy ..\include\*.h include
+copy ..\tcclib.h include
+copy ..\tests\libtcc_test.c examples
 
 :libtcc1.a
 .\tcc %target% -c ../lib/libtcc1.c
@@ -59,10 +59,9 @@ tiny_libmaker lib/libtcc1.a libtcc1.o alloca86_64.o crt1.o wincrt1.o dllcrt1.o d
 
 :the_end
 del *.o
-copy ..\tests\libtcc_test.c examples
 
 :makedoc
 if not exist doc md doc
 copy tcc-win32.txt doc
 echo>..\config.texi @set VERSION %VERSION%
-makeinfo --html --no-split -o doc\tcc-doc.html ../tcc-doc.texi
+makeinfo --html --no-split -o doc\tcc-doc.html ../tcc-doc.texi || echo *** tcc-doc.html was not built ***

win32/tcc-win32.txt

@@ -54,7 +54,7 @@
         tcc examples/libtcc_test.c -I libtcc libtcc/libtcc.def
 
     - Compiling with MinGW:
-        gcc examples/libtcc_test.c -I libtcc libtcc.dll
+        gcc examples/libtcc_test.c -I libtcc libtcc.dll -o libtcc_test.exe
 
     - Compiling with MSVC:
         lib /def:libtcc\libtcc.def /out:libtcc.lib