From 05e2023f74d510c833541e0b1502a720557280a0 Mon Sep 17 00:00:00 2001
From: Christian Neukirchen <chneukirchen@gmail.com>
Date: Tue, 19 May 2015 16:38:52 +0200
Subject: [PATCH] gc: fix musl build. (patch from Alpine.)

---
 srcpkgs/gc/patches/fix-boehm-gc.patch | 11 +++++++++++
 srcpkgs/gc/template                   |  4 ++++
 2 files changed, 15 insertions(+)
 create mode 100644 srcpkgs/gc/patches/fix-boehm-gc.patch

diff --git a/srcpkgs/gc/patches/fix-boehm-gc.patch b/srcpkgs/gc/patches/fix-boehm-gc.patch
new file mode 100644
index 00000000000..5c69b6d7522
--- /dev/null
+++ b/srcpkgs/gc/patches/fix-boehm-gc.patch
@@ -0,0 +1,11 @@
+--- os_dep.c
++++ os_dep.c
+@@ -26,7 +26,7 @@
+ #   define __KERNEL__
+ #   include <asm/signal.h>
+ #   undef __KERNEL__
+-# else
++# elif defined(__GLIBC__)
+     /* Kernels prior to 2.1.1 defined struct sigcontext_struct instead of */
+     /* struct sigcontext.  libc6 (glibc2) uses "struct sigcontext" in     */
+     /* prototypes, so we have to include the top-level sigcontext.h to    */
diff --git a/srcpkgs/gc/template b/srcpkgs/gc/template
index ffb3f4b6905..7940679b96a 100644
--- a/srcpkgs/gc/template
+++ b/srcpkgs/gc/template
@@ -5,6 +5,10 @@ revision=1
 build_style=gnu-configure
 hostmakedepends="automake pkg-config libtool"
 makedepends="libatomic_ops-devel"
+case "$XBPS_TARGET_MACHINE" in
+*-musl)
+	CFLAGS='-D_GNU_SOURCE -DNO_GETCONTEXT -DUSE_MMAP'
+esac
 short_desc="A garbage collector for C and C++"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="http://www.hboehm.info/gc/"