[pkgsrc/trunk]: pkgsrc/lang/erlang From https://github.com/erlang/otp/pull/46...

[is <is%pkgsrc.org@localhost>]

details:   https://anonhg.NetBSD.org/pkgsrc/rev/7fd4386fc561
branches:  trunk
changeset: 627955:7fd4386fc561
user:      is <is%pkgsrc.org@localhost>
date:      Tue Dec 24 15:00:44 2013 +0000

description:
>From https://github.com/erlang/otp/pull/46#issuecomment-21719585

"Since b29ecbd (OTP-10418, R15B03) Erlang does not compile anymore with
old versions of GCC that do not have atomic ops builtins on platforms
where there is no native ethread implementation (e.g. ARM): (...)

Please note however that I will be merging this branch as well,
which will mean that you have to explicitly tell configure that
you intend to use the fallback atomic operations though
--disable-native-ethr-impls or --disable-smp-require-native-atomics."

Translated: On NetBSD-5.1 (with gcc-4.1.3) the erlang package
didn't compile because of

>  ../include/internal/gcc/ethr_membar.h:49:4: error:
>       #error "No __sync_val_compare_and_swap"

Adding the abovementioned option --disable-native-ethr-impls make the
Erlang runtime system use the original (now fallback) code. This should
maybe be an pkg option, but for now this has to do.

diffstat:

 lang/erlang/Makefile |  22 +++++++++++++++++++---
 1 files changed, 19 insertions(+), 3 deletions(-)

diffs (43 lines):

diff -r 6f7233d35daa -r 7fd4386fc561 lang/erlang/Makefile
--- a/lang/erlang/Makefile      Tue Dec 24 11:22:42 2013 +0000
+++ b/lang/erlang/Makefile      Tue Dec 24 15:00:44 2013 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.58 2013/10/18 15:47:49 roy Exp $
+# $NetBSD: Makefile,v 1.59 2013/12/24 15:00:44 is Exp $
 
 DISTNAME=              otp_src_${DIST_VERSION_MAJOR}${DIST_VERSION_MINOR:D-${DIST_VERSION_MINOR}}
 PKGREVISION=           1
@@ -26,6 +26,24 @@
 PTHREAD_OPTS+=         require native
 CONFIGURE_ARGS+=       --enable-threads
 
+.include "../../mk/bsd.prefs.mk"
+
+# have gcc without the necessary atomic ops?
+.if !empty(MACHINE_PLATFORM:MNetBSD-5.*)
+
+# a machine without native ethread implementation?
+.if    empty(MACHINE_PLATFORM:M*i386)  &&\
+       empty(MACHINE_PLATFORM:M*sparc) &&\
+       empty(MACHINE_PLATFORM:M*sparc64) &&\
+       empty(MACHINE_PLATFORM:M*powerpc) &&\
+       empty(MACHINE_PLATFORM:M*x86_64)
+
+CONFIGURE_ARGS+=       --disable-native-ethr-impls\
+                       --disable-smp-require-native-atomics
+
+.endif
+.endif
+
 MAKE_ENV+=             DESTDIR=${DESTDIR}
 
 REPLACE_INTERPRETER+=  escript
@@ -52,8 +70,6 @@
 
 PLIST_SRC=             PLIST
 
-.include "../../mk/bsd.prefs.mk"
-
 .if exists(${.CURDIR}/PLIST.${OPSYS})
 PLIST_SRC+=    ${.CURDIR}/PLIST.${OPSYS}
 .endif