various stuff

win32/Makefile ("for cygwin") removed
- On cygwin, the normal ./configure && make can be used with either
  cygwin's "GCC for Win32 Toolchain"
      ./configure --cross-prefix=i686-w64-mingw32-
  or with an existing tcc:
      ./configure --cc=<old-tccdir>/tcc.exe

tcctest.c:
- exclude test_high_clobbers() on _WIN64 (does not work)

tests2/95_bitfield.c:
- use 'signed char' for ARM (where default 'char' is unsigned)

tests:
- remove -I "expr" diff option to allow tests with
  busybox-diff.

libtcc.c, tcc.c:
- removed -iwithprefix option.  It is supposed to be
  combined with -iprefix which we don't have either.

tccgen.c:
- fix assignments and return of 'void', as in
     void f() {
         void *p, *q;
         *p = *q:
         return *p;
     }
  This appears to be allowed but should do nothing.

tcc.h, libtcc.c, tccpp.c:
- Revert "Introduce VIP sysinclude paths which are always searched first"
  This reverts commit 1d5e386b0a78393ac6b670c209a185849ec798a1.

  The patch was giving tcc's system includes priority over -I which
  is not how it should be.

tccelf.c:
- add DT_TEXTREL tag only if text relocations are actually
  used (which is likely not the case on x86_64)
- prepare_dynamic_rel(): avoid relocation of unresolved
  (weak) symbols

tccrun.c:
- for HAVE_SELINUX, use two mappings to the same (real) file.
  (it was so once except the RX mapping wasn't used at all).

tccpe.c:
- fix relocation constant used for x86_64 (by Andrei E. Warentin)
- #ifndef _WIN32 do "chmod 755 ..." to get runnable exes on cygwin.

tccasm.c:
- keep forward asm labels static, otherwise they will endup
  in dynsym eventually.

configure, Makefile:
- mingw32: respect ./configure options --bindir --docdir --libdir
- allow overriding tcc when building libtcc1.a and libtcc.def with
      make XTCC=<tcc program to use>
- use $(wildcard ...) for install to allow installing just
  a cross compiler for example
      make cross-arm
      make install
- use name <target>-libtcc1.a

build-tcc.bat:
- add  options: -clean, -b bindir

1 files changed, 7 insertions, 12 deletions

diff --git a/win32/tcc-win32.txt b/win32/tcc-win32.txt
index 3609684..751a8e0 100644
--- a/win32/tcc-win32.txt
+++ b/win32/tcc-win32.txt
@@ -108,6 +108,8 @@
     ------------------------
     * You can use the MinGW and MSYS tools available at
         http://www.mingw.org
+        http://www.mingw-w64.org
+        http://www.msys2.org
 
       Untar the TCC archive and type in the MSYS shell:
         ./configure [--prefix installpath]
@@ -116,29 +118,22 @@
 
       The default install location is c:\Program Files\tcc
 
+      Cygwin can be used too with its mingw cross-compiler installed:
+        ./configure --cross-prefix=i686-w64-mingw32-
+        (the prefix may vary)
+
     * Alternatively you can compile TCC with just GCC from MinGW using
         > build-tcc.bat (from the win32 directory)
 
       Also MSVC can be used with the "VSTools Developer Command Prompt":
         > build-tcc.bat -c cl
 
-      or with a tcc (needs to be in a different directory)
+      or with an existing tcc (needs to be in a different directory)
         > build-tcc.bat -c some-tcc-dir\tcc.exe
 
       Also you can copy/install everything into another directory:
         > build-tcc.bat -i <dir>
 
-    * You can also bootstrap a native tcc Windows toolchain with cygwin.
-       https://www.cygwin.com/
-
-      Install Base, gcc, make
-      Launch Cygwin Terminal
-        > make
-      or to force 32bit executables (including 64bit backend)
-        > make TARGET=32
-      or to force 64bit executables (including 32bit backend)
-        > make TARGET=64
-
     Limitations:
     ------------
     - On the object file level, currently TCC supports only the ELF format,