libs: add cJSON

New package, new dependency of mosquitto v2.0

Signed-off-by: Karl Palsson <karlp@etactica.com>

libs/cjson/Makefile

@@ -0,0 +1,53 @@
+# This Makefile is free software, SPDX codes: GPL-2.0-or-later OR MIT
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=cJSON
+PKG_VERSION:=1.7.14
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/DaveGamble/cJSON/tar.gz/v$(PKG_VERSION)?
+PKG_HASH:=fb50a663eefdc76bafa80c82bc045af13b1363e8f45cec8b442007aef6a41343
+
+PKG_LICENSE:=MIT
+PKG_LICENSE_FILES:=LICENSE
+PKG_CPE_ID:=cpe:/a:cjson_project:cjson
+
+CMAKE_INSTALL:=1
+PKG_BUILD_PARALLEL:=1
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+define Package/cJSON
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE:=Ultralightweight JSON parser in ANSI C
+  URL:=https://github.com/DaveGamble/cJSON
+  MAINTAINER:=Karl Palsson <karlp@etactica.com>
+endef
+
+define Package/cJSON/description
+ Ultralightweight JSON parser in ANSI C.
+cJSON aims to be the dumbest possible parser that you can get your
+job done with. It's a single file of C, and a single header file.
+endef
+
+CMAKE_OPTIONS += -DENABLE_CJSON_TEST=OFF
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/libcjson.pc $(1)/usr/lib/pkgconfig
+	$(INSTALL_DIR) $(1)/usr/include
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/cjson/cJSON.h $(1)/usr/include/
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libcjson.so* $(1)/usr/lib/
+endef
+
+define Package/cJSON/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libcjson.so* $(1)/usr/lib/
+endef
+
+$(eval $(call BuildPackage,cJSON))