package/coremark-pro: fix build without threads

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/coremark-pro/coremark-pro.mk

@@ -10,13 +10,32 @@ COREMARK_PRO_LICENSE = Apache-2.0
 COREMARK_PRO_LICENSE_FILES = LICENSE.md
 COREMARK_PRO_DEPENDENCIES = perl
 
+COREMARK_PRO_LDFLAGS = -lm
+
 ifeq ($(BR2_ENDIAN),"BIG")
-COREMARK_PRO_MAKE_OPTS += PLATFORM_DEFINES='EE_BIG_ENDIAN=1 EE_LITTLE_ENDIAN=0'
+COREMARK_PRO_DEFINES += \
+	EE_BIG_ENDIAN=1 \
+	EE_LITTLE_ENDIAN=0
+else
+COREMARK_PRO_DEFINES += \
+	EE_BIG_ENDIAN=0 \
+	EE_LITTLE_ENDIAN=1
+endif
+
+ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
+COREMARK_PRO_DEFINES += \
+	USE_NATIVE_PTHREAD=1 \
+	USE_SINGLE_CONTEXT=0
+COREMARK_PRO_LDFLAGS += -lpthread
 else
-COREMARK_PRO_MAKE_OPTS += PLATFORM_DEFINES='EE_BIG_ENDIAN=0 EE_LITTLE_ENDIAN=1'
+COREMARK_PRO_DEFINES += \
+	USE_NATIVE_PTHREAD=0 \
+	USE_SINGLE_CONTEXT=1
 endif
 
 COREMARK_PRO_MAKE_OPTS += \
+	LINKER_LAST="$(COREMARK_PRO_LDFLAGS)" \
+	PLATFORM_DEFINES="$(COREMARK_PRO_DEFINES)" \
 	TARGET=linux$(if $(BR2_ARCH_IS_64),64) \
 	EXE=