Some more adaptations for Debian-->mingw32

 * Remove option -mwindows which isnt working : the GUI binary refuses to
   launch in a real windows.

 * simplification of ./build. New way of use :
    ./configure -prefix "" -arch win32 && ./build win32
   This way we avoid any tricks with coq_config.ml.
   It is also best to avoid ./configure -local otherwise Envars.coqbin ()
   will be wrong later.

 * Avoid creation of an ad-hoc coq_config in myocamlbuild.ml

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12819 85f007b7-540e-0410-9357-904b9bb8a0f7

build

@@ -15,12 +15,9 @@ ocb() { $OCAMLBUILD $FLAGS $*; }
 rule() {
   check_config
   case $1 in
-    win32)  cp $CFG $CFG.initial && chmod 644 $CFG && \
-	    echo 'let arch = "win32"' >> $CFG &&
-	    ocb coq-win32.otarget
-	    mv -f $CFG.initial $CFG;;
     clean)  ocb -clean && rm -rf bin/* && rm -f $MYCFG;;
     all)    ocb coq.otarget;;
+    win32)  ocb coq-win32.otarget;;
     *)      ocb $1;;
   esac;
 }

myocamlbuild.ml

@@ -249,6 +249,7 @@ let extra_rules () = begin
 
   rule "coq_config.ml" ~prod:"coq_config.ml" ~dep:"config/coq_config.ml"
     (fun _ _ ->
+       if w32 then cp "config/coq_config.ml" "coq_config.ml" else
        let lines = read_file "config/coq_config.ml" in
        let lines = List.map (fun s -> s^"\n") lines in
        let srcbuild = Filename.concat coqsrc !_build in
@@ -374,7 +375,7 @@ let extra_rules () = begin
     let depsb = "coq_config.cmo" :: core_cma in
     let depideo = if is_ide then [ide_cmxa] else [] in
     let depideb = if is_ide then [ide_cma] else [] in
-    let w32ideflag = if is_ide then [A"-ccopt";A"\"-link -mwindows\""] else [] in
+    let w32ideflag = (*if is_ide then [A"-ccopt";A"\"-link -mwindows\""] else*) [] in
     let w32flag = if not w32 then N else S ([A"-camlbin";A w32bin]@w32ideflag) in
     if opt then rule fo ~prod:fo ~deps:(depsall@depso@depideo) ~insert:`top
       (cmd [P coqmktopbest;w32flag;A"-boot";A"-opt";ideflag;incl fo;A"-o";Px fo]);