toolchain-external: introduce BR2_TOOLCHAIN_HAS_OPENMP

Add new BR2_TOOLCHAIN_HAS_OPENMP option for toolchains with OpenMP
support.

Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

toolchain/Config.in

@@ -168,6 +168,9 @@ config BR2_TOOLCHAIN_HAS_SSP
 config BR2_TOOLCHAIN_HAS_UCONTEXT
 	bool
 
+config BR2_TOOLCHAIN_HAS_OPENMP
+	bool
+
 config BR2_TOOLCHAIN_SUPPORTS_PIE
 	bool
 

toolchain/toolchain-external/pkg-toolchain-external.mk

@@ -144,6 +144,10 @@ TOOLCHAIN_EXTERNAL_LIBS += libquadmath.so*
 endif
 endif
 
+ifeq ($(BR2_TOOLCHAIN_HAS_OPENMP),y)
+TOOLCHAIN_EXTERNAL_LIBS += libgomp.so.*
+endif
+
 TOOLCHAIN_EXTERNAL_LIBS += $(call qstrip,$(BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS))