fix installation amd bcheck for Windows

    * define targetos=Windows when --enable-tcc32-mingw, --enable-cygwin, ...
    * use TARGETOS insteed HOST_OS when selecting PROGS
    * use "$(tccdir)" insteed $(tccdir) on install (spaces in path)
    * install tcc.exe too
    * produce bcheck.o when cross-compiling too (lib/Makefile)
    * force bcheck.o linking by compiling inside tcc_set_output_type()
      a dummy program with local array. Otherwise bcheck.o may be not linked.
    * replace %xz format specifier with %p in bcheck (don't supported on
      Windows)
    * call a __bound_init when __bound_ptr_add, __bound_ptr_indir,
      __bound_new_region, __bound_delete_region called.
      This is because a __bound_init inside ".init" section is not called
      on Windows for unknown reason.
    * print on stderr a message when an illegal pointer is returned:
        there is no segmentation violation on Windows for a program
        compiled with "tcc -b"
    * remove "C:" subdir on clean if $HOST_OS = "Linux"
    * default CFLAGS="-Wall -g -O0" insteed CFLAGS="-Wall -g -O2"
      to speed up compilation and more precise debugging.

1 files changed, 10 insertions, 5 deletions

diff --git a/configure b/configure
index 69089fe..5b9b9c1 100755
--- a/configure
+++ b/configure
@@ -47,7 +47,12 @@ tcc_elfinterp=""
 tcc_lddir=
 confvars=
 cpu=
+
 host_os=`uname`
+case $host_os in
+  MINGW32*)  host_os=Windows; ;;
+  *) ;;
+esac
 
 # OS specific
 targetos=`uname`
@@ -170,13 +175,13 @@ for opt do
   ;;
   --enable-gprof) gprof="yes"
   ;;
-  --enable-mingw32) mingw32="yes" ; cross_prefix="i686-pc-mingw32-" ; cpu=x86
+  --enable-mingw32) mingw32="yes" ; cross_prefix="i686-pc-mingw32-" ; cpu=x86; targetos=Windows;
   ;;
-  --enable-cygwin) mingw32="yes" ; cygwin="yes" ; cross_prefix="mingw32-" ; cpu=x86
+  --enable-cygwin) mingw32="yes" ; cygwin="yes" ; cross_prefix="mingw32-" ; cpu=x86; targetos=Windows;
   ;;
-  --enable-tcc32-mingw) mingw32="yes" ; cross_prefix="i386-win-" ; cpu=x86; cc=tcc
+  --enable-tcc32-mingw) mingw32="yes" ; cross_prefix="i386-win-" ; cpu=x86; cc=tcc; targetos=Windows;
   ;;
-  --enable-tcc64-mingw) mingw32="yes" ; cross_prefix="x86_64-win-" ; cpu=x86_64; cc=tcc
+  --enable-tcc64-mingw) mingw32="yes" ; cross_prefix="x86_64-win-" ; cpu=x86_64; cc=tcc; targetos=Windows;
   ;;
   --enable-cross) build_cross="yes"
   ;;
@@ -210,7 +215,7 @@ classify_cpu "$cpu"
 
 # Checking for CFLAGS
 if test -z "$CFLAGS"; then
-    CFLAGS="-Wall -g -O2"
+    CFLAGS="-Wall -g -O0"
 fi
 
 if test "$mingw32" = "yes" ; then