[Buildroot] [PATCH v1 2/2] package/quickjs: link with libatomic

[Peter Seiderer]

Link with libatomic if available.

Fixes:

  - http://autobuild.buildroot.net/results/e0766eef95a2559d51e58d1a81a9c40df84ae509

  .../build/quickjs-2020-11-08/quickjs.c:12229: undefined reference to `__atomic_fetch_xor_1'

Signed-off-by: Peter Seiderer <ps.report at gmx.net>
---
 ...ile-add-optional-link-with-libatomic.patch | 30 +++++++++++++++++++
 package/quickjs/quickjs.mk                    |  6 +++-
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 package/quickjs/0001-Makefile-add-optional-link-with-libatomic.patch

diff --git a/package/quickjs/0001-Makefile-add-optional-link-with-libatomic.patch b/package/quickjs/0001-Makefile-add-optional-link-with-libatomic.patch
new file mode 100644
index 0000000000..12f4eb2338
--- /dev/null
+++ b/package/quickjs/0001-Makefile-add-optional-link-with-libatomic.patch
@@ -0,0 +1,30 @@
+From 2cf2aa34d5d55a4eedb1aedd4d56d89d24870230 Mon Sep 17 00:00:00 2001
+From: Peter Seiderer <ps.report at gmx.net>
+Date: Sun, 3 Jan 2021 21:11:44 +0100
+Subject: [PATCH] Makefile: add optional link with libatomic
+
+Add optional libatomic linking if available to fix:
+
+  .../build/quickjs-2020-11-08/quickjs.c:12229: undefined reference to `__atomic_fetch_xor_1'
+
+Signed-off-by: Peter Seiderer <ps.report at gmx.net>
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index e6ae827..22ad496 100644
+--- a/Makefile
++++ b/Makefile
+@@ -177,7 +177,7 @@ endif
+ HOST_LIBS=-lm -ldl -lpthread
+ LIBS=-lm
+ ifndef CONFIG_WIN32
+-LIBS+=-ldl -lpthread
++LIBS+=-ldl -lpthread $(LIBATOMIC)
+ endif
+ 
+ $(OBJDIR):
+-- 
+2.29.2
+
diff --git a/package/quickjs/quickjs.mk b/package/quickjs/quickjs.mk
index 1a2e63278f..389ed71133 100644
--- a/package/quickjs/quickjs.mk
+++ b/package/quickjs/quickjs.mk
@@ -10,8 +10,12 @@ QUICKJS_SITE = https://bellard.org/quickjs
 QUICKJS_LICENSE = MIT
 QUICKJS_INSTALL_STAGING = YES
 
+ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
+QUICKJS_LIBATOMIC += -latomic
+endif
+
 define QUICKJS_BUILD_CMDS
-	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
+	$(TARGET_MAKE_ENV) LIBATOMIC=$(QUICKJS_LIBATOMIC) $(MAKE) -C $(@D) \
 		CROSS_PREFIX="$(TARGET_CROSS)" \
 		all
 endef
-- 
2.29.2