package/stb: new package

This is a header only library which is required by the latest version
of zxing-cpp.

Include paths and pc file are based off of debian libstb package.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1418,6 +1418,7 @@ F:	package/rtl8192eu/
 F:	package/serd/
 F:	package/sord/
 F:	package/sratom/
+F:	package/stb/
 F:	package/zchunk/
 F:	support/testing/tests/package/sample_python_rtoml.py
 F:	support/testing/tests/package/test_python_rtoml.py

package/Config.in

@@ -1600,6 +1600,7 @@ menu "Graphics"
 	source "package/pixman/Config.in"
 	source "package/poppler/Config.in"
 	source "package/powervr/Config.in"
+	source "package/stb/Config.in"
 	source "package/tiff/Config.in"
 	source "package/unclutter-xfixes/Config.in"
 	source "package/waffle/Config.in"

package/stb/Config.in

@@ -0,0 +1,6 @@
+config BR2_PACKAGE_STB
+	bool "stb"
+	help
+	  Single-file image and audio processing libraries for C/C++.
+
+	  https://github.com/nothings/stb

package/stb/stb.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  c47cf5abe21e1d620afccd159c23fe71dfa86eb270015a7646a4f79e9bfd5503  stb-8b5f1f37b5b75829fc72d38e7b5d4bcbf8a26d55.tar.gz
+sha256  bebfe904b14301657e4e5d655c811d51fd31b97c455b9cc2d8600d6bac6cff63  LICENSE

package/stb/stb.mk

@@ -0,0 +1,21 @@
+################################################################################
+#
+# stb
+#
+################################################################################
+
+STB_VERSION = 8b5f1f37b5b75829fc72d38e7b5d4bcbf8a26d55
+STB_SITE = $(call github,nothings,stb,$(STB_VERSION))
+STB_LICENSE = Public Domain or MIT
+STB_LICENSE_FILES = LICENSE
+STB_INSTALL_STAGING = YES
+STB_INSTALL_TARGET = NO
+
+define STB_INSTALL_STAGING_CMDS
+	mkdir -p $(STAGING_DIR)/usr/include/stb
+	$(INSTALL) -m 0644 $(@D)/*.h $(STAGING_DIR)/usr/include/stb
+	$(INSTALL) -D -m 0644 $(STB_PKGDIR)/stb.pc \
+		$(STAGING_DIR)/usr/lib/pkgconfig/stb.pc
+endef
+
+$(eval $(generic-package))

package/stb/stb.pc

@@ -0,0 +1,8 @@
+prefix=/usr
+libdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: stb
+Description: single-file image and audio processing libraries for C/C++
+Version: 0.0
+Cflags: -I${includedir}/stb