From d54bcf14e1bf0aa17eea0ac820d6640df64c30ee Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Fri, 28 May 2010 19:48:05 +0000
Subject: [PATCH] grub: compile fixes for Mac OS X (based on patches by Jukka
 Ylitalo)

SVN-Revision: 21608
---
 package/grub/Makefile                         | 21 ++++++++
 .../patches/100-add_configure_macros.patch    | 11 +++++
 .../patches/110-remove_configure_errors.patch | 38 +++++++++++++++
 package/grub/patches/200-darwin_fixes.patch   | 48 +++++++++++++++++++
 4 files changed, 118 insertions(+)
 create mode 100644 package/grub/patches/100-add_configure_macros.patch
 create mode 100644 package/grub/patches/110-remove_configure_errors.patch
 create mode 100644 package/grub/patches/200-darwin_fixes.patch

diff --git a/package/grub/Makefile b/package/grub/Makefile
index 221269ba41..5fd2a23088 100644
--- a/package/grub/Makefile
+++ b/package/grub/Makefile
@@ -44,6 +44,11 @@ CONFIGURE_ARGS += $(MY_CONFIGURE_ARGS)
 
 CONFIGURE_VARS += $(MY_CONFIGURE_VARS)
 
+ifeq ($(HOST_OS),Darwin)
+  HOST_CFLAGS += $(call host-cc-option,-m32)
+  HOST_CFLAGS += $(call host-cc-option,-fnested-functions)
+endif
+
 HOST_CFLAGS += $(call host-cc-option,-fno-stack-protector)
 HOST_CFLAGS += $(call host-cc-option,-U_FORTIFY_SOURCE)
 
@@ -53,6 +58,22 @@ HOST_CONFIGURE_ARGS += $(MY_CONFIGURE_ARGS) \
 
 HOST_CONFIGURE_VARS += $(MY_CONFIGURE_VARS)
 
+define Host/Configure
+	(cd $(HOST_BUILD_DIR); aclocal && autoconf && automake)
+	$(call Host/Configure/Default)
+endef
+
+ifeq ($(HOST_OS),Darwin)
+  define Host/Compile
+	$(MAKE) -C $(HOST_BUILD_DIR)/lib
+	$(MAKE) -C $(HOST_BUILD_DIR)/stage2 libgrub.a
+	$(MAKE) -C $(HOST_BUILD_DIR)/grub
+  endef
+  define Host/Install
+	$(MAKE) -C $(HOST_BUILD_DIR)/grub install
+  endef
+endif
+
 define Build/InstallDev
 	$(INSTALL_DIR) $(1)/usr/lib
 	$(CP) $(PKG_INSTALL_DIR)/usr/lib/grub $(1)/usr/lib/
diff --git a/package/grub/patches/100-add_configure_macros.patch b/package/grub/patches/100-add_configure_macros.patch
new file mode 100644
index 0000000000..476f778bc2
--- /dev/null
+++ b/package/grub/patches/100-add_configure_macros.patch
@@ -0,0 +1,11 @@
+--- a/configure.ac
++++ b/configure.ac
+@@ -56,6 +56,8 @@ fi
+ 
+ AC_CHECK_TOOL(CC, gcc)
+ AC_PROG_CC
++AM_PROG_CC_C_O
++AM_PROG_AS
+ # We need this for older versions of Autoconf.
+ _AM_DEPENDENCIES(CC)
+ 
diff --git a/package/grub/patches/110-remove_configure_errors.patch b/package/grub/patches/110-remove_configure_errors.patch
new file mode 100644
index 0000000000..f090aa9756
--- /dev/null
+++ b/package/grub/patches/110-remove_configure_errors.patch
@@ -0,0 +1,38 @@
+--- a/configure.ac
++++ b/configure.ac
+@@ -177,26 +177,22 @@ grub_ASM_ABSOLUTE_WITHOUT_ASTERISK
+ 
+ grub_CHECK_START_SYMBOL
+ grub_CHECK_USCORE_START_SYMBOL
+-if test "x$grub_cv_check_start_symbol" != "xyes" \
+-	-a "x$grub_cv_check_uscore_start_symbol" != "xyes"; then
+-  AC_MSG_ERROR([Neither start nor _start is defined])
+-fi
+ 
+ grub_CHECK_USCORE_USCORE_BSS_START_SYMBOL
+ grub_CHECK_USCORE_EDATA_SYMBOL
+ grub_CHECK_EDATA_SYMBOL
+-if test "x$grub_cv_check_uscore_uscore_bss_start_symbol" != "xyes" \
+-	-a "x$grub_cv_check_uscore_edata_symbol" != "xyes" \
+-	-a "x$grub_cv_check_edata_symbol" != "xyes"; then
+-  AC_MSG_ERROR([None of __bss_start, _edata, edata defined])
+-fi
++# if test "x$grub_cv_check_uscore_uscore_bss_start_symbol" != "xyes" \
++#	-a "x$grub_cv_check_uscore_edata_symbol" != "xyes" \
++#	-a "x$grub_cv_check_edata_symbol" != "xyes"; then
++#  AC_MSG_ERROR([None of __bss_start, _edata, edata defined])
++# fi
+ 
+ grub_CHECK_END_SYMBOL
+ grub_CHECK_USCORE_END_SYMBOL
+-if test "x$grub_cv_check_end_symbol" != "xyes" \
+-	-a "x$grub_cv_check_uscore_end_symbol" != "xyes"; then
+-  AC_MSG_ERROR([Neither end nor _end is defined])
+-fi
++#if test "x$grub_cv_check_end_symbol" != "xyes" \
++#	-a "x$grub_cv_check_uscore_end_symbol" != "xyes"; then
++#  AC_MSG_ERROR([Neither end nor _end is defined])
++#fi
+ 
+ # Check for curses libraries.
+ AC_ARG_WITH(curses,
diff --git a/package/grub/patches/200-darwin_fixes.patch b/package/grub/patches/200-darwin_fixes.patch
new file mode 100644
index 0000000000..c5c55a9182
--- /dev/null
+++ b/package/grub/patches/200-darwin_fixes.patch
@@ -0,0 +1,48 @@
+--- a/stage2/asm.S
++++ b/stage2/asm.S
+@@ -95,14 +95,16 @@ VARIABLE(stage2_id)
+ VARIABLE(force_lba)
+ 	.byte	0
+ VARIABLE(version_string)
+-	.string VERSION
++	.ascii VERSION
++	.byte	0
+ VARIABLE(config_file)
+ #ifndef STAGE1_5
+-	.string "/boot/grub/menu.lst"
++	.ascii "/boot/grub/menu.lst"
+ #else   /* STAGE1_5 */
+ 	.long	0xffffffff
+-	.string "/boot/grub/stage2"
++	.ascii "/boot/grub/stage2"
+ #endif  /* STAGE1_5 */
++	.byte	0
+ 
+ 	/*
+ 	 *  Leave some breathing room for the config file name.
+@@ -762,7 +764,9 @@ ENTRY(chain_stage1)
+ 	call	EXT_C(prot_to_real)
+ 	.code16
+ 
+-#ifdef ABSOLUTE_WITHOUT_ASTERISK
++#ifdef __APPLE__
++	DATA32	ADDR32	ljmp	offset
++#elif defined(ABSOLUTE_WITHOUT_ASTERISK)
+ 	DATA32	ADDR32	ljmp	(offset)
+ #else
+ 	DATA32	ADDR32	ljmp	*(offset)
+--- a/stage2/char_io.c
++++ b/stage2/char_io.c
+@@ -1345,5 +1345,12 @@ grub_strcpy (char *dest, const char *src
+ #ifndef GRUB_UTIL
+ # undef memcpy
+ /* GCC emits references to memcpy() for struct copies etc.  */
++#ifdef __APPLE__
++void *memcpy (void *dest, const void *src, int n)
++{
++	return grub_memmove(dest, src, n);
++}
++#else
+ void *memcpy (void *dest, const void *src, int n)  __attribute__ ((alias ("grub_memmove")));
+ #endif
++#endif
-- 
2.30.2