Updated README.windows.md to include Arch Linux cross-compilation

README.windows.md

@@ -64,9 +64,11 @@ Running julia can be done in two ways:
 Cross-Compile
 -------------
 
-If you prefer to cross-compile, the following steps should get you started:
+If you prefer to cross-compile, the following steps should get you started.
 
-First, you will need to ensure your system has the required dependencies. Note that I build on an Ubuntu system, so the `make dist` may not be fully functional on other systems. On Ubuntu 12.04, the following command will install the required build dependencies.
+### Building on Ubuntu
+
+First, you will need to ensure your system has the required dependencies. On Ubuntu 12.04, the following command will install the required build dependencies.
 
 ```
 apt-get install \
@@ -115,6 +117,52 @@ Finally, the build and install process:
 
 If you are building for 64-bit windows. The steps are essentially the same. Just replace i686 in XC_HOST with x86_64.
 
+### Building on Arch Linux
+
+First the required dependencies will be installed:
+
+1. Install the following packages from the official Arch repository:
+`sudo pacman -S cloog gcc-ada libmpc p7zip ppl subversion zlib`
+2. The rest of the prerequisites consist of the mingw-w64 packages, which are available in the AUR Arch repository. They must be installed exactly in the order they are given or else their installation will fail. The `yaourt` package manager is used for illustration purposes; you may instead follow the [Arch instructions for installing packages from AUR](https://wiki.archlinux.org/index.php/Arch_User_Repository#Installing_packages) or may use your preferred package manager. To start with, install `mingw-w64-binutils` via the command
+`yaourt -S mingw-w64-binutils`
+3. `yaourt -S mingw-w64-headers-svn`
+4. `yaourt -S mingw-w64-headers-bootstrap`
+5. `yaourt -S mingw-w64-gcc-base`
+6. `yaourt -S mingw-w64-crt-svn`
+7. Remove `mingw-w64-headers-bootstrap` without removing its dependent mingw-w64 installed packages by using the command
+`yaourt -Rdd mingw-w64-headers-bootstrap`
+8. `yaourt -S mingw-w64-winpthreads`
+9. Remove `mingw-w64-gcc-base` without removing its installed mingw-w64 dependencies:
+`yaourt -Rdd mingw-w64-gcc-base`
+10. Complete the installation of the required `mingw-w64` packages:
+`yaourt -S mingw-w64-gcc`
+
+The build and install process of Julia is the same as in steps 1-7 of Ubuntu except that the following changes need to be made before executing the 7 steps:
+
+1. Add `OPENBLAS_BUILD_OPTS += HOSTCC=gcc` in `deps/Makefile` after the definition of the `OPENBLAS_BUILD_OPTS` environment variable.
+2. In `src/Mafefile` replace `./flisp/flisp` with `$(call spawn,./flisp/flisp)`. More specifically replace the lines
+
+```
+julia_flisp.boot.inc: julia_flisp.boot flisp/libflisp.a
+ $(QUIET_FLISP) ./flisp/flisp ./bin2hex.scm < $< > $@
+
+julia_flisp.boot: julia-parser.scm julia-syntax.scm \
+ match.scm utils.scm jlfrontend.scm mk_julia_flisp_boot.scm flisp/libflisp.a
+ $(QUIET_FLISP) ./flisp/flisp ./mk_julia_flisp_boot.scm
+```
+with
+
+```
+julia_flisp.boot.inc: julia_flisp.boot flisp/libflisp.a
+ $(QUIET_FLISP) $(call spawn,./flisp/flisp) ./bin2hex.scm < $< > $@
+
+julia_flisp.boot: julia-parser.scm julia-syntax.scm \
+ match.scm utils.scm jlfrontend.scm mk_julia_flisp_boot.scm flisp/libflisp.a
+ $(QUIET_FLISP) $(call spawn,./flisp/flisp) ./mk_julia_flisp_boot.scm
+```
+
+Finally, after completing the Julia cross-compilation by executing the 7 Julia build and installation steps described in the Ubuntu section and after moving the julia-* directory/zipfile to the target machine, add the `julia-*/lib` and `julia-*/lib/julia` directories to your Windows `PATH` environment variable.
+
 Important Build Errata
 ----------------------