From 6559823d31f520ba3878e1d2b286a396e4faaa44 Mon Sep 17 00:00:00 2001
From: Michael Gehring <mg@ebfe.org>
Date: Wed, 28 Jun 2017 22:58:38 +0000
Subject: [PATCH] musl: add bigstack build option

This enables building musl with a bigger default pthread stack size
(currently 8MB to match glibc default stack size), to make it easier to
diagnose stack-too-small issues.
---
 srcpkgs/musl/patches/bigstack-option.patch | 14 ++++++++++++++
 srcpkgs/musl/template                      |  5 +++++
 2 files changed, 19 insertions(+)
 create mode 100644 srcpkgs/musl/patches/bigstack-option.patch

diff --git a/srcpkgs/musl/patches/bigstack-option.patch b/srcpkgs/musl/patches/bigstack-option.patch
new file mode 100644
index 00000000000..f631bb803f5
--- /dev/null
+++ b/srcpkgs/musl/patches/bigstack-option.patch
@@ -0,0 +1,14 @@
+--- src/internal/pthread_impl.h.orig	2017-06-28 22:52:51.000000000 +0000
++++ src/internal/pthread_impl.h	2017-06-28 22:52:59.297555622 +0000
+@@ -141,7 +141,11 @@
+ void __block_app_sigs(void *);
+ void __restore_sigs(void *);
+ 
++#ifdef VOID_BIGSTACK
++#define DEFAULT_STACK_SIZE 8388608
++#else
+ #define DEFAULT_STACK_SIZE 81920
++#endif
+ #define DEFAULT_GUARD_SIZE 4096
+ 
+ #define __ATTRP_C11_THREAD ((void*)(uintptr_t)-1)
diff --git a/srcpkgs/musl/template b/srcpkgs/musl/template
index 4e0c3bc652e..2d5efc33942 100644
--- a/srcpkgs/musl/template
+++ b/srcpkgs/musl/template
@@ -17,6 +17,11 @@ nostrip_files="libc.so"
 shlib_provides="libc.so"
 only_for_archs="i686-musl x86_64-musl armv5tel-musl armv6l-musl armv7l-musl aarch64-musl mips-musl mipsel-musl mipselhf-musl"
 
+desc_option_bigstack="bigger default pthread stack size"
+build_options="bigstack"
+
+CFLAGS="$(vopt_if bigstack -DVOID_BIGSTACK)"
+
 post_build() {
 	$CC $CFLAGS $LDFLAGS ${FILESDIR}/getent.c -o getent
 	$CC $CFLAGS $LDFLAGS ${FILESDIR}/getconf.c -o getconf