package/graphicsmagick: enable OpenMP when supported by toolchain

Signed-off-by: Grzegorz Blach <grzegorz@blach.pl>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/graphicsmagick/graphicsmagick.mk

@@ -21,7 +21,6 @@ GRAPHICSMAGICK_CONFIG_SCRIPTS += GraphicsMagick++-config
 endif
 
 GRAPHICSMAGICK_CONF_OPTS = \
-	--disable-openmp \
 	--without-dps \
 	--without-fpx \
 	--without-jbig \
@@ -33,6 +32,12 @@ GRAPHICSMAGICK_CONF_OPTS = \
 
 GRAPHICSMAGICK_DEPENDENCIES = host-pkgconf
 
+ifeq ($(BR2_TOOLCHAIN_HAS_OPENMP),y)
+GRAPHICSMAGICK_CONF_OPTS += --enable-openmp
+else
+GRAPHICSMAGICK_CONF_OPTS += --disable-openmp
+endif
+
 ifeq ($(BR2_PACKAGE_FREETYPE),y)
 GRAPHICSMAGICK_CONF_OPTS += --with-ttf
 GRAPHICSMAGICK_CONF_ENV += ac_cv_path_freetype_config=$(STAGING_DIR)/usr/bin/freetype-config