bug#19111: 25.0.50; 32 bits temacs.exe is linked with wrong image-base when built on 64 bit Windows host

["Óscar Fuentes" <ofv@wanadoo.es>]

Óscar Fuentes <ofv@wanadoo.es> writes:

> There other places on `configure' that uses the contents of $canonical
> for deciding if its creating an 32 or 64 bits MinGW build.

Opinions?

diff --git a/configure.ac b/configure.ac
index 5d71c2f..f286246 100644
--- a/configure.ac
+++ b/configure.ac
@@ -665,8 +665,8 @@ case "${canonical}" in
 
   # MinGW64
   x86_64-*-* )
-    case "${canonical}" in
-      *-mingw* )
+    case "${MSYSTEM}" in
+      MINGW64 )
 		opsys=mingw32
 		# MinGW overrides and adds some system headers in nt/inc.
 		GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
@@ -1331,8 +1331,8 @@ C_SWITCH_SYSTEM=
 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
   C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
 if test "$opsys" = "mingw32"; then
-  case "$canonical" in
-    x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
+  case "$MSYSTEM" in
+    MINGW64) C_SWITCH_SYSTEM="-mtune=generic" ;;
     *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
   esac
 fi
@@ -1881,8 +1881,8 @@ if test "${HAVE_W32}" = "yes"; then
   W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
   W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
   EMACSRES="emacs.res"
-  case "$canonical" in
-    x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
+  case "$MSYSTEM" in
+    MINGW64) EMACS_MANIFEST="emacs-x64.manifest" ;;
     *) EMACS_MANIFEST="emacs-x86.manifest" ;;
   esac
   if test "${opsys}" = "cygwin"; then
@@ -4908,8 +4908,8 @@ case "$opsys" in
 
   mingw32)
    ## Is it any better under MinGW64 to relocate emacs into higher addresses?
-   case "$canonical" in
-     x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
+   case "$MSYSTEM" in
+     MINGW64) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
      *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
    esac
    ;;