From 80fdaf1d012fa0403f7b75568df926735f070c3c Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Thu, 31 Dec 2015 22:34:26 +0100
Subject: [PATCH] configure.ac: Reorder efiemu check to after link format
 check.

efiemu is supposed to be disabled when compiling through exe format.
Unfortunately format was determined only after efiemu check. Reorder to fix the
problem
---
 configure.ac | 127 +++++++++++++++++++++++++++------------------------
 1 file changed, 67 insertions(+), 60 deletions(-)

diff --git a/configure.ac b/configure.ac
index 2e656dbea..26d2f33c7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -948,66 +948,6 @@ if test "x$grub_cv_cc_fno_unwind_tables" = xyes; then
   TARGET_CFLAGS="$TARGET_CFLAGS -fno-unwind-tables"
 fi
 
-AC_ARG_ENABLE([efiemu],
-	      [AS_HELP_STRING([--enable-efiemu],
-                             [build and install the efiemu runtimes (default=guessed)])])
-if test x"$enable_efiemu" = xno ; then
-  efiemu_excuse="explicitly disabled"
-fi
-if test x"$grub_cv_target_cc_link_format" = x-mi386pe || test x"$grub_cv_target_cc_link_format" = x-mi386pep ; then
-  efiemu_excuse="not available on cygwin"
-fi
-if test x"$target_cpu" != xi386 ; then
-  efiemu_excuse="only available on i386"
-fi
-if test x"$platform" = xefi ; then
-  efiemu_excuse="not available on efi"
-fi
-if test x"$efiemu_excuse" = x ; then
-  AC_CACHE_CHECK([whether options required for efiemu work], grub_cv_cc_efiemu, [
-    CFLAGS="-m64 -nostdlib -O2 -mcmodel=large -mno-red-zone"
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
-		      [grub_cv_cc_efiemu=yes],
-		      [grub_cv_cc_efiemu=no])
-  ])
-  if test x$grub_cv_cc_efiemu = xno; then
-     efiemu_excuse="cannot compile with -m64 -mcmodel=large -mno-red-zone -nostdlib"
-  fi
-fi
-if test x"$efiemu_excuse" = x ; then
-  AC_CACHE_CHECK([for efiemu64 linking format], [grub_cv_target_cc_efiemu64_link_format], [
-    grub_cv_target_cc_efiemu64_link_format=unknown
-    for format in -melf_x86_64 -melf_x86_64_fbsd -melf_x86_64_obsd -melf_x86_64_haiku -arch,x86_64; do
-      CFLAGS="-m64 -nostdlib -O2 -mcmodel=large -mno-red-zone"
-      LDFLAGS="-m64 -Wl,$format -nostdlib -static"
-      AC_LINK_IFELSE([AC_LANG_PROGRAM([[
-      asm (".globl start; start:");
-      asm (".globl _start; _start:");
-      asm (".globl __start; __start:");
-      void __main (void);
-      void __main (void) {}
-      ]], [[]])], [flag=1], [flag=0])
-      if test x"$flag" = x1; then
-        grub_cv_target_cc_efiemu64_link_format="$format"
-	break
-      fi
-    done])
-  if test x"$grub_cv_target_cc_efiemu64_link_format" = xunknown; then
-    efiemu_excuse="no suitable link format for efiemu64 found"
-  else
-    EFIEMU64_LINK_FORMAT="-Wl,$grub_cv_target_cc_efiemu64_link_format"
-  fi
-fi
-if test x"$enable_efiemu" = xyes && test x"$efiemu_excuse" != x ; then
-  AC_MSG_ERROR([efiemu runtime was explicitly requested but can't be compiled ($efiemu_excuse)])
-fi
-if test x"$efiemu_excuse" = x ; then
-enable_efiemu=yes
-else
-enable_efiemu=no
-fi
-AC_SUBST([enable_efiemu])
-AC_SUBST([EFIEMU64_LINK_FORMAT])
 
 CFLAGS="$TARGET_CFLAGS"
 
@@ -1101,6 +1041,73 @@ else
   TARGET_IMG_CFLAGS=
 fi
 
+CFLAGS="$TARGET_CFLAGS"
+
+AC_ARG_ENABLE([efiemu],
+	      [AS_HELP_STRING([--enable-efiemu],
+                             [build and install the efiemu runtimes (default=guessed)])])
+if test x"$enable_efiemu" = xno ; then
+  efiemu_excuse="explicitly disabled"
+fi
+
+if test x"$grub_cv_target_cc_link_format" = x-mi386pe || test x"$grub_cv_target_cc_link_format" = x-mi386pep ; then
+  efiemu_excuse="not available on cygwin"
+fi
+if test x"$target_cpu" != xi386 ; then
+  efiemu_excuse="only available on i386"
+fi
+if test x"$platform" = xefi ; then
+  efiemu_excuse="not available on efi"
+fi
+
+if test x"$efiemu_excuse" = x ; then
+  AC_CACHE_CHECK([whether options required for efiemu work], grub_cv_cc_efiemu, [
+    CFLAGS="-m64 -nostdlib -O2 -mcmodel=large -mno-red-zone"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+		      [grub_cv_cc_efiemu=yes],
+		      [grub_cv_cc_efiemu=no])
+  ])
+  if test x$grub_cv_cc_efiemu = xno; then
+     efiemu_excuse="cannot compile with -m64 -mcmodel=large -mno-red-zone -nostdlib"
+  fi
+fi
+if test x"$efiemu_excuse" = x ; then
+  AC_CACHE_CHECK([for efiemu64 linking format], [grub_cv_target_cc_efiemu64_link_format], [
+    grub_cv_target_cc_efiemu64_link_format=unknown
+    for format in -melf_x86_64 -melf_x86_64_fbsd -melf_x86_64_obsd -melf_x86_64_haiku -arch,x86_64; do
+      CFLAGS="-m64 -nostdlib -O2 -mcmodel=large -mno-red-zone"
+      LDFLAGS="-m64 -Wl,$format -nostdlib -static"
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+      asm (".globl start; start:");
+      asm (".globl _start; _start:");
+      asm (".globl __start; __start:");
+      void __main (void);
+      void __main (void) {}
+      ]], [[]])], [flag=1], [flag=0])
+      if test x"$flag" = x1; then
+        grub_cv_target_cc_efiemu64_link_format="$format"
+	break
+      fi
+    done])
+  if test x"$grub_cv_target_cc_efiemu64_link_format" = xunknown; then
+    efiemu_excuse="no suitable link format for efiemu64 found"
+  else
+    EFIEMU64_LINK_FORMAT="-Wl,$grub_cv_target_cc_efiemu64_link_format"
+  fi
+fi
+if test x"$enable_efiemu" = xyes && test x"$efiemu_excuse" != x ; then
+  AC_MSG_ERROR([efiemu runtime was explicitly requested but can't be compiled ($efiemu_excuse)])
+fi
+if test x"$efiemu_excuse" = x ; then
+enable_efiemu=yes
+else
+enable_efiemu=no
+fi
+AC_SUBST([enable_efiemu])
+AC_SUBST([EFIEMU64_LINK_FORMAT])
+
+CFLAGS="$TARGET_CFLAGS"
+
 AC_SUBST(TARGET_LDFLAGS_OLDMAGIC)