pkg/relic: adapt cmake xcompile on macOS

pkg/relic/Makefile

@@ -5,22 +5,28 @@ PKG_LICENSE=LGPL-2.1
 
 .PHONY: all
 
+CFLAGS += -Wno-gnu-zero-variadic-macro-arguments -Wno-unused-function -Wno-newline-eof
+
+TOOLCHAIN_FILE=$(PKG_BUILDDIR)/xcompile-toolchain.cmake
+
 all: $(PKG_BUILDDIR)/Makefile
-	"$(MAKE)" -C $(PKG_BUILDDIR) && \
+	$(MAKE) -C $(PKG_BUILDDIR) && \
 	cp $(PKG_BUILDDIR)/lib/librelic_s.a $(BINDIR)/$(PKG_NAME).a
 
-$(PKG_BUILDDIR)/comp-options.cmake: fix_source
-	cd "$(PKG_BUILDDIR)" && perl $(PKG_DIR)/generate-cmake-xcompile.perl > comp-options.cmake
+$(PKG_BUILDDIR)/Makefile: $(TOOLCHAIN_FILE)
+	cd $(PKG_BUILDDIR) && \
+	COMP="$(filter-out -Werror=old-style-definition -Werror=strict-prototypes, $(CFLAGS) ) " \
+	cmake -DCMAKE_TOOLCHAIN_FILE=$(TOOLCHAIN_FILE) \
+		  -DCHECK=off -DTESTS=0 -DBENCH=0 -DSHLIB=off -Wno-dev $(RELIC_CONFIG_FLAGS) .
 
-$(PKG_BUILDDIR)/Makefile: $(PKG_BUILDDIR)/comp-options.cmake
-	cd "$(PKG_BUILDDIR)" && COMP="$(filter-out -Werror=old-style-definition -Werror=strict-prototypes, $(CFLAGS) ) " cmake -DCMAKE_TOOLCHAIN_FILE=comp-options.cmake -DCHECK=off -DTESTS=0 -DBENCH=0 -DSHLIB=off -Wno-dev $(RELIC_CONFIG_FLAGS) .
-
-CFLAGS += -Wno-gnu-zero-variadic-macro-arguments -Wno-unused-function -Wno-newline-eof
+$(TOOLCHAIN_FILE): fix_source
+	$(RIOTBASE)/dist/tools/cmake/generate-xcompile-toolchain.sh > $(TOOLCHAIN_FILE)
 
 fix_source: git-download
 	./fix-util_print_wo_args.sh $(PKG_BUILDDIR)
 	./fix-old-style-definitions.sh $(PKG_BUILDDIR)
 
 clean::
 	@rm -rf $(BINDIR)/$(PKG_NAME).a
+
 include $(RIOTBASE)/pkg/pkg.mk