From bc67731f82cd6cebaf51529e9610bacb1a7c07ef Mon Sep 17 00:00:00 2001
From: Andreas Bauman <mail@andreasbaumann.cc>
Date: Thu, 5 Apr 2018 16:00:25 +0200
Subject: tested on old OS X 10.8 with Macports

---
 doc/HOWTO.OSX | 23 +++++++++++++++++++----
 src/Makefile  |  5 +++--
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/doc/HOWTO.OSX b/doc/HOWTO.OSX
index 326cb70..90c1aed 100644
--- a/doc/HOWTO.OSX
+++ b/doc/HOWTO.OSX
@@ -1,17 +1,28 @@
 Followed: http://wiki.osdev.org/How_to_develop_on_Mac_OS_X
 
-brew uninstall binutils
+
 lynx ftp://ftp.gnu.org/gnu/binutils/
 lynx ftp://ftp.gnu.org/gnu/gcc/
 tar zxvf binutils-2.28.tar.gz 
 tar zxvf gcc-6.3.0.tar.gz 
 cd gcc-6.3.0
 contrib/download_prerequisites 
+
+# new MacOS (brew)
+brew uninstall binutils
 brew install gcc
 export CC=/usr/local/bin/gcc-6
 export CXX=/usr/local/bin/g++-6 
 export CPP=/usr/local/bin/cpp-6 
 export LD=/usr/local/bin/gcc-6 
+
+# old MacOS (macports)
+sudo port install gcc
+sudo port select --set gcc mp-gcc7
+export CC=/opt/local/bin/gcc
+export CXX=/opt/local/bin/g++
+export CPP=/opt/local/bin/cpp
+export LD=/opt/local/bin/gcc
 export PREFIX="$HOME/opt/cross"
 export TARGET=i486-elf
 export PATH="$PREFIX/bin:$PATH"
@@ -21,16 +32,20 @@ mv gcc-6.3.0* src
 cd src/
 mkdir build-binutils
 cd build-binutils
-../binutils-2.28/configure --target=$TARGET --prefix="$PREFIX" --with-sysroot --disable-nls --disable-werror
+../binutils-2.28/configure --target=$TARGET --prefix="$PREFIX" \
+	--with-sysroot --disable-nls --disable-werror
 make
 make install
 which -- $TARGET-as || echo $TARGET-as is not in the PATH
 mkdir build-gcc
 cd build-gcc
-../gcc-6.3.0/configure --target=$TARGET --prefix="$PREFIX" --disable-nls --enable-languages=c,c++ --without-headers
+../gcc-6.3.0/configure --target=$TARGET --prefix="$PREFIX" \
+	--disable-nls --enable-languages=c,c++ --without-headers
 make all-gcc
 make all-target-libgcc
 make install-gcc
 make install-target-libgcc
 
-make CC=~/opt/cross/bin/i486-elf-gcc LD=~/opt/cross/bin/i486-elf-ld
+make TRUNCATE=gtruncate OBJCOPY=~/opt/cross/bin/i486-elf-objcopy \
+	CC=~/opt/cross/bin/i486-elf-gcc LD=~/opt/cross/bin/i486-elf-ld \
+	clean all run-qemu
diff --git a/src/Makefile b/src/Makefile
index 0817887..96acb38 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -9,6 +9,7 @@ NASMFLAGS := -f elf32
 NASM := nasm
 OBJCOPY := objcopy
 MAGIC := $(shell printf '%x' `date +%s`)
+TRUNCATE := truncate
 
 all: image.bin kernel.sym
 
@@ -23,9 +24,9 @@ all: image.bin kernel.sym
 # on the size of the image)
 image.bin: boot.bin kernel.bin magic.bin
 	cat boot.bin kernel.bin > image.tmp
-	truncate -s 89088 image.tmp
+	$(TRUNCATE) -s 89088 image.tmp
 	cat image.tmp magic.bin > image.bin
-	truncate -s 1474560 image.bin
+	$(TRUNATE) -s 1474560 image.bin
 	
 boot.bin: boot/boot.asm boot/boot_gdt.asm boot/stage1_functions.asm boot/stage2_real_functions.asm boot/stage2_pm_functions.asm boot/stage2_switch_mode.asm boot/stage2_a20.asm
 	$(NASM) boot/boot.asm -DMAGIC='"$(MAGIC)"' -f bin -o boot.bin
-- 
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