Fix -fno-lto determination/add --enable-auto-image-base option to windows build (when available)

2 files changed, 74 insertions, 0 deletions

diff --git a/win/configure b/win/configure
index 99fc0a1..e176fb3 100755
--- a/win/configure
+++ b/win/configure
@@ -3665,6 +3665,7 @@ echo "${ECHO_T}$ac_cv_municode" >&6
 	else
 	    extra_cflags="$extra_cflags -DTCL_BROKEN_MAINARGS"
 	fi
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fno-lto"
 	echo "$as_me:$LINENO: checking for working -fno-lto" >&5
 echo $ECHO_N "checking for working -fno-lto... $ECHO_C" >&6
 if test "${ac_cv_nolto+set}" = set; then
@@ -3727,6 +3728,66 @@ echo "${ECHO_T}$ac_cv_nolto" >&6
 	fi
     fi
 
+    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Wl,--enable-auto-image-base"
+    echo "$as_me:$LINENO: checking for working --enable-auto-image-base" >&5
+echo $ECHO_N "checking for working --enable-auto-image-base... $ECHO_C" >&6
+if test "${ac_cv_enable_auto_image_base+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_enable_auto_image_base=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_enable_auto_image_base=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_enable_auto_image_base" >&5
+echo "${ECHO_T}$ac_cv_enable_auto_image_base" >&6
+    CFLAGS=$hold_cflags
+    if test "$ac_cv_enable_auto_image_base" == "yes" ; then
+	extra_ldflags="$extra_ldflags -Wl,--enable-auto-image-base"
+    fi
+
     echo "$as_me:$LINENO: checking compiler flags" >&5
 echo $ECHO_N "checking compiler flags... $ECHO_C" >&6
     if test "${GCC}" = "yes" ; then
diff --git a/win/tcl.m4 b/win/tcl.m4
index 79cb87b..00cd4d2 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -659,6 +659,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	else
 	    extra_cflags="$extra_cflags -DTCL_BROKEN_MAINARGS"
 	fi
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fno-lto"
 	AC_CACHE_CHECK(for working -fno-lto,
 	    ac_cv_nolto,
 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
@@ -673,6 +674,18 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	fi
     fi
 
+    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Wl,--enable-auto-image-base"
+    AC_CACHE_CHECK(for working --enable-auto-image-base,
+	ac_cv_enable_auto_image_base,
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
+	[ac_cv_enable_auto_image_base=yes],
+	[ac_cv_enable_auto_image_base=no])
+    )
+    CFLAGS=$hold_cflags
+    if test "$ac_cv_enable_auto_image_base" == "yes" ; then
+	extra_ldflags="$extra_ldflags -Wl,--enable-auto-image-base"
+    fi
+
     AC_MSG_CHECKING([compiler flags])
     if test "${GCC}" = "yes" ; then
 	SHLIB_LD=""