erlang: Add new package.

---
 package/Config.in                     |    1 +
 package/erlang/Config.in              |    9 +++++++++
 package/erlang/erlang-build-fix.patch |   13 +++++++++++++
 package/erlang/erlang.mk              |   26 ++++++++++++++++++++++++++
 4 files changed, 49 insertions(+), 0 deletions(-)
 create mode 100644 package/erlang/Config.in
 create mode 100644 package/erlang/erlang-build-fix.patch
 create mode 100644 package/erlang/erlang.mk

index b84d7f1..8c36952 100644
@@ -227,6 +227,7 @@ source "package/xfsprogs/Config.in"
 endmenu
 
 menu "Interpreter languages and scripting"
+source "package/erlang/Config.in"
 source "package/haserl/Config.in"
 source "package/lua/Config.in"
 if BR2_PACKAGE_LUA

new file mode 100644
index 0000000..78f34ac
@@ -0,0 +1,9 @@
+config BR2_PACKAGE_ERLANG
+	bool "erlang"
+	select BR2_PACKAGE_NCURSES
+	help
+	  Erlang is a programming language used to build massively scalable
+	  soft real-time systems with requirements on high availability.
+	  Some of its uses are in telecoms, banking, e-commerce, computer
+	  telephony and instant messaging. Erlang's runtime system has
+	  built-in support for concurrency, distribution and fault tolerance.

b/package/erlang/erlang-build-fix.patch
new file mode 100644
index 0000000..d2938a5

@@ -0,0 +1,13 @@
+apply-patches.sh deletes this file from the source directory.
+
+--- erlang-R15B01.old/lib/tools/emacs/Makefile	2012-04-04

15:54:29.271832192 +0100
++++ erlang-R15B01/lib/tools/emacs/Makefile 2012-04-04 15:55:16.978957307 +0100
+@@ -51,7 +51,7 @@
+
+ ELC_FILES = $(EMACS_FILES:%=%.elc)
+
+-TEST_FILES = test.erl.indented test.erl.orig ++TEST_FILES = test.erl.indented
+
+ # ----------------------------------------------------
+ # Targets

new file mode 100644
index 0000000..e8ce8bc
@@ -0,0 +1,26 @@
+#############################################################
+#
+# erlang
+#
+#############################################################
+
+ERLANG_VERSION = R15B01
+ERLANG_SITE = http://www.erlang.org/download
+ERLANG_SOURCE = otp_src_$(ERLANG_VERSION).tar.gz
+ERLANG_DEPENDENCIES = ncurses host-erlang
+
+# The configure checks for these functions fail incorrectly
+ERLANG_CONF_ENV = ac_cv_func_isnan=yes ac_cv_func_isinf=yes
+
+# Remove source, example, gs and wx files from the target
+define ERLANG_REMOVE_UNUSED
+	find $(TARGET_DIR)/usr/lib/erlang -type d -name src -prune -exec rm -rf {} \;
+	find $(TARGET_DIR)/usr/lib/erlang -type d -name examples -prune

-exec rm -rf {} \;
+ rm -rf $(TARGET_DIR)/usr/lib/erlang/lib/gs-*
+ rm -rf $(TARGET_DIR)/usr/lib/erlang/lib/wx-*
+endef
+
+ERLANG_POST_INSTALL_TARGET_HOOKS += ERLANG_REMOVE_UNUSED +
+$(eval $(call AUTOTARGETS))
+$(eval $(call AUTOTARGETS,host))

1.7.1
-------------- next part --------------

Hello Will,

Le Wed, 4 Apr 2012 17:49:07 +0100,
Will Newton <[email protected]> a ?crit :

Thanks for this.

A couple of questions/comments:

*) Could you update the patch to use autotools-package and host-autotools-package in accordance with the latest package infrastructure changes?

*) Could you add your Signed-off by line?

*) The complete Erlang stuff gets installed in /usr/lib/erlang, even the binaries (compiler, interpreter?) in /usr/lib/erlang/bin/. Is this the normal installation location? If so, then we should at least probably provide a few symlinks from /usr/bin/.

*) By default the /usr/lib/erlang/ size is 55 MB on ARM. Is this the minimal size of the standard library?

*) From the configure.in script, I see options like shared-zlib, or ssl path or things like that, but your erlang package does not depend on zlib nor OpenSSL. Can you give a few comments about this?

Thanks!

Thomas

Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

Ok, done.

Sure.

I get these symlinks in my build, e.g.:

[wnewton at wnewton-linux buildroot]$ ls -l output/target/usr/bin/erl* lrwxrwxrwx. 1 wnewton ldapusers 21 Aug 22 11:18 output/target/usr/bin/erl -> ../lib/erlang/bin/erl lrwxrwxrwx. 1 wnewton ldapusers 22 Aug 22 11:18 output/target/usr/bin/erlc -> ../lib/erlang/bin/erlc

It is quite large unfortunately. At least part of this seems to be that the bytecode files (.beam) are not very compact. It is possible to delete packages (just delete /usr/lib/erlang/lib/<package>-<version>) but it is not clear exactly what a good minimal set is. I remove gs (tk based UI) and wx (wxWidgets based UI) libs as they are not supported by buildroot.

I'll add a config option for the megaco application which is the largest by some distance.

I've added support for enabling openssl, zlib and ncurses dependencies.

I'll repost the patch with these changes.

Le Wed, 22 Aug 2012 14:00:04 +0100,
Will Newton <[email protected]> a ?crit :

Hum, ok, I might have looked improperly. I'll check again with your updated patch.

Ok.

Excellent, thanks!

Thomas

Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com