From 1089758c8c1a4ea1ee3f9af46bcb958d91f7d856 Mon Sep 17 00:00:00 2001
From: reinoud <reinoud@pkgsrc.org>
Date: Fri, 2 Feb 2007 15:23:16 +0000
Subject: Initial commit of pkgsrc crosscompile HOWTO. It till needs some
 tweaking and could eventually be incorporated into the guide.

---
 doc/HOWTO-crosscompile | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 doc/HOWTO-crosscompile

(limited to 'doc')

diff --git a/doc/HOWTO-crosscompile b/doc/HOWTO-crosscompile
new file mode 100644
index 00000000000..6685327b324
--- /dev/null
+++ b/doc/HOWTO-crosscompile
@@ -0,0 +1,90 @@
+Crosscompiling with distcc HOWTO
+================================
+
+Purpose:
+--------
+croscompiling of sourcecode in general including NetBSD's source 
+tree and NetBSD's pkgsrc packages using `pkgsrc/devel/distcc'
+
+Note that this current setup is not intended for build builds as it might
+confuse the buildbuild system.
+
+Target machine setup:
+---------------------
+1) install `pkgsrc/devel/distcc' package.
+
+2) install helper script "use-distcc" in f.e. /usr/local/bin/:
+	---------
+	#!/usr/pkg/bin/tcsh
+
+	setenv PATH "/usr/distcc/bin:$PATH"
+	setenv CC gcc
+	---------
+
+3) create directory "/usr/distcc/bin" contents with softlinks :
+	lrwxr-xr-x  1 root  wheel   20 Sep 16 02:58 c++@ -> ../../pkg/bin/distcc
+	lrwxr-xr-x  1 root  wheel   20 Sep 16 02:57 cc@ -> ../../pkg/bin/distcc
+	lrwxr-xr-x  1 root  wheel   20 Sep 16 02:58 g++@ -> ../../pkg/bin/distcc
+	lrwxr-xr-x  1 root  wheel   20 Sep 16 02:57 gcc@ -> ../../pkg/bin/distcc
+
+
+Helper machine setup:
+---------------------
+1) install `pkgsrc/devel/distcc' package.
+
+2) create a crosscompiler to compile from any architecture to NetBSD/sparc, 
+go to the NetBSD src dir and run :
+	./build.sh -a sparc -m sparc -T /usr/gcc-cross-sparc/ tools
+
+this will create a directory called /usr/gcc-cross-sparc/ with the 
+crosscompilation tools.
+
+3) install helper script "START-distcc' 
+	------------
+	#!/usr/pkg/bin/tcsh
+
+	setenv PATH "/usr/gcc-cross-sparc/sparc--netbsdelf/bin/:$PATH"
+	setenv DISTCC_VERBOSE 1
+
+	distccd -a 192.168.0.137/24  --listen 192.168.0.137 -p 3632
+	-----------
+this will start the `distcc' daemon to listen on the 192.168.0/24 network 
+and listen on 192.168.0.137 specificly and on port 3632 (why doesn't it do 
+this on default?)
+
+
+Compilation of sources (not pkgsrc):
+------------------------------------
+1) on each helper machine run the `START-distcc' script
+
+2) on the target machine (replace helper1, helper2 etc. by the names/ip 
+addresses of the helper machines) :
+	-----------
+	source /usr/local/bin/use-distcc
+	setenv DISTCC_HOSTS "helper1 helper2 helper3"
+	cd .../sourcedir
+	make -j2 target
+	-----------
+
+
+Compilation of pkgsrc packages:
+-------------------------------
+1) on each helper machine run the `START-distcc' script
+
+2) on the target machine, do NOT run the `use-distcc' script, go to the
+package dir and set :
+
+set the helpers (,lzo addition sets compression of the data transport):
+	setenv DISTCC_HOSTS "helper1 helper2 helper3,lzo"
+
+instruct pkgsrc to use distcc:
+	setenv PKGSRC_COMPILER "distcc gcc"
+
+set the concurrency level (not all packages allow this)
+	setenv BUILD_MAKE_FLAGS "-j2"
+
+compile/update package
+	make update
+
+thats all :)
+
-- 
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