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

4 files changed, 4 insertions, 7 deletions

diff --git a/tests/pp/13.expect b/tests/pp/13.expect
index 6eb2bec..c7a3230 100644
--- a/tests/pp/13.expect
+++ b/tests/pp/13.expect
@@ -1,3 +1,2 @@
-# `modelist' label. Each video mode record looks like:
 .text
 endtext:
diff --git a/tests/pp/15.c b/tests/pp/15.c
index 3bbc3ca..cf13f9a 100644
--- a/tests/pp/15.c
+++ b/tests/pp/15.c
@@ -12,7 +12,7 @@ return n(A)n(++)n(+)n(+)n(B);
 return n(0x1E)n(-1);
 
 // unlike gcc but correct
-XXX: return n(x)+n(x)-n(1)+n(1)-2;
+// XXX: return n(x)+n(x)-n(1)+n(1)-2;
 
 // unlike gcc, but cannot appear in valid C
-XXX: return n(x)n(x)n(1)n(2)n(x);
+// XXX: return n(x)n(x)n(1)n(2)n(x);
diff --git a/tests/pp/15.expect b/tests/pp/15.expect
index f652240..b4f885e 100644
--- a/tests/pp/15.expect
+++ b/tests/pp/15.expect
@@ -3,5 +3,3 @@ return A+++B;
 return A+ ++B;
 return A+++ +B;
 return 0x1E -1;
-XXX: return x+x-1 +1 -2;
-XXX: return x x 1 2 x;
diff --git a/tests/pp/Makefile b/tests/pp/Makefile
index 21c9969..687aa52 100644
--- a/tests/pp/Makefile
+++ b/tests/pp/Makefile
@@ -12,7 +12,7 @@ TESTS = $(call files,c) $(call files,S)
 
 all test : $(sort $(TESTS))
 
-DIFF_OPTS = -Nu -b -B -I "^\#"
+DIFF_OPTS = -Nu -b -B
 
 # Filter source directory in warnings/errors (out-of-tree builds)
 FILTER = 2>&1 | sed 's,$(SRC)/,,g'
@@ -40,7 +40,7 @@ clean:
 	rm -f *.output
 
 02.test : DIFF_OPTS += -w
-15.test : DIFF_OPTS += -I"^XXX:"
+# 15.test : DIFF_OPTS += -I"^XXX:"
 
 # diff options:
 # -b ighore space changes