packages: use SPDX short identifier for zlib license

We want to use SPDX identifier for license string as much as possible.
SPDX short identifier for zlib license is Zlib.

This change is done using following command.
find . -name "*.mk" | xargs sed -ri '/LICENSE( )?[\+:]?=/s/zlib( )?(license)?/Zlib/g'

Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/bullet/bullet.mk

@@ -7,7 +7,7 @@
 BULLET_VERSION = 2.85.1
 BULLET_SITE = $(call github,bulletphysics,bullet3,$(BULLET_VERSION))
 BULLET_INSTALL_STAGING = YES
-BULLET_LICENSE = zlib license
+BULLET_LICENSE = Zlib
 BULLET_LICENSE_FILES = LICENSE.txt
 
 # Disable demos apps and unit tests.

package/libglfw/libglfw.mk

@@ -9,7 +9,7 @@ LIBGLFW_SITE = $(call github,glfw,glfw,$(LIBGLFW_VERSION))
 LIBGLFW_INSTALL_STAGING = YES
 LIBGLFW_DEPENDENCIES = libgl xlib_libXcursor xlib_libXext \
 	xlib_libXinerama xlib_libXrandr
-LIBGLFW_LICENSE = zlib
+LIBGLFW_LICENSE = Zlib
 LIBGLFW_LICENSE_FILES = COPYING.txt
 
 LIBGLFW_CONF_OPTS += \

package/minizip/minizip.mk

@@ -10,7 +10,7 @@ MINIZIP_DEPENDENCIES = zlib
 MINIZIP_AUTORECONF = YES
 MINIZIP_INSTALL_STAGING = YES
 MINIZIP_CONF_OPTS = $(if $(BR2_PACKAGE_MINIZIP_DEMOS),--enable-demos)
-MINIZIP_LICENSE = zlib license
+MINIZIP_LICENSE = Zlib
 MINIZIP_LICENSE_FILES = LICENSE
 
 $(eval $(autotools-package))

package/physfs/physfs.mk

@@ -8,7 +8,7 @@ PHYSFS_VERSION = be27dfd07d97336145e7f49d3fd200a6e902f85e
 PHYSFS_SITE = https://hg.icculus.org/icculus/physfs
 PHYSFS_SITE_METHOD = hg
 
-PHYSFS_LICENSE = zlib license (physfs), LGPL with exceptions (lzma)
+PHYSFS_LICENSE = Zlib (physfs), LGPL with exceptions (lzma)
 PHYSFS_LICENSE_FILES = LICENSE.txt src/lzma/LGPL.txt
 
 PHYSFS_INSTALL_STAGING = YES

package/sdl2/sdl2.mk

@@ -7,7 +7,7 @@
 SDL2_VERSION = 2.0.5
 SDL2_SOURCE = SDL2-$(SDL2_VERSION).tar.gz
 SDL2_SITE = http://www.libsdl.org/release
-SDL2_LICENSE = zlib
+SDL2_LICENSE = Zlib
 SDL2_LICENSE_FILES = COPYING.txt
 SDL2_INSTALL_STAGING = YES
 SDL2_CONFIG_SCRIPTS = sdl2-config

package/sdl2_gfx/sdl2_gfx.mk

@@ -7,7 +7,7 @@
 SDL2_GFX_VERSION = 1.0.1
 SDL2_GFX_SOURCE = SDL2_gfx-$(SDL2_GFX_VERSION).tar.gz
 SDL2_GFX_SITE = http://www.ferzkopp.net/Software/SDL2_gfx
-SDL2_GFX_LICENSE = zlib
+SDL2_GFX_LICENSE = Zlib
 SDL2_GFX_LICENSE_FILES = COPYING SDL2_framerate.h
 SDL2_GFX_INSTALL_STAGING = YES
 SDL2_GFX_DEPENDENCIES = sdl2 host-pkgconf

package/sdl2_image/sdl2_image.mk

@@ -8,7 +8,7 @@ SDL2_IMAGE_VERSION = 2.0.1
 SDL2_IMAGE_SOURCE = SDL2_image-$(SDL2_IMAGE_VERSION).tar.gz
 SDL2_IMAGE_SITE = http://www.libsdl.org/projects/SDL_image/release
 SDL2_IMAGE_INSTALL_STAGING = YES
-SDL2_IMAGE_LICENSE = zlib
+SDL2_IMAGE_LICENSE = Zlib
 SDL2_IMAGE_LICENSE_FILES = COPYING.txt
 
 # Unconditionally enable support for image formats that don't require

package/sdl2_ttf/sdl2_ttf.mk

@@ -7,7 +7,7 @@
 SDL2_TTF_VERSION = 2.0.14
 SDL2_TTF_SOURCE = SDL2_ttf-$(SDL2_TTF_VERSION).tar.gz
 SDL2_TTF_SITE = http://www.libsdl.org/projects/SDL_ttf/release
-SDL2_TTF_LICENSE = zlib
+SDL2_TTF_LICENSE = Zlib
 SDL2_TTF_LICENSE_FILES = COPYING.txt
 SDL2_TTF_INSTALL_STAGING = YES
 SDL2_TTF_DEPENDENCIES = sdl2 freetype host-pkgconf

package/sdl_gfx/sdl_gfx.mk

@@ -8,7 +8,7 @@ SDL_GFX_VERSION_MAJOR = 2.0
 SDL_GFX_VERSION = $(SDL_GFX_VERSION_MAJOR).23
 SDL_GFX_SOURCE = SDL_gfx-$(SDL_GFX_VERSION).tar.gz
 SDL_GFX_SITE = http://www.ferzkopp.net/Software/SDL_gfx-$(SDL_GFX_VERSION_MAJOR)
-SDL_GFX_LICENSE = zlib
+SDL_GFX_LICENSE = Zlib
 SDL_GFX_LICENSE_FILES = COPYING LICENSE
 SDL_GFX_INSTALL_STAGING = YES
 SDL_GFX_DEPENDENCIES = sdl

package/sdl_image/sdl_image.mk

@@ -8,7 +8,7 @@ SDL_IMAGE_VERSION = 1.2.12
 SDL_IMAGE_SOURCE = SDL_image-$(SDL_IMAGE_VERSION).tar.gz
 SDL_IMAGE_SITE = http://www.libsdl.org/projects/SDL_image/release
 SDL_IMAGE_INSTALL_STAGING = YES
-SDL_IMAGE_LICENSE = zlib
+SDL_IMAGE_LICENSE = Zlib
 SDL_IMAGE_LICENSE_FILES = COPYING
 
 SDL_IMAGE_CONF_OPTS = \

package/sdl_mixer/sdl_mixer.mk

@@ -7,7 +7,7 @@
 SDL_MIXER_VERSION = 1.2.12
 SDL_MIXER_SOURCE = SDL_mixer-$(SDL_MIXER_VERSION).tar.gz
 SDL_MIXER_SITE = http://www.libsdl.org/projects/SDL_mixer/release
-SDL_MIXER_LICENSE = zlib
+SDL_MIXER_LICENSE = Zlib
 SDL_MIXER_LICENSE_FILES = COPYING
 
 SDL_MIXER_INSTALL_STAGING = YES

package/sdl_net/sdl_net.mk

@@ -7,7 +7,7 @@
 SDL_NET_VERSION = 1.2.8
 SDL_NET_SITE = http://www.libsdl.org/projects/SDL_net/release
 SDL_NET_SOURCE = SDL_net-$(SDL_NET_VERSION).tar.gz
-SDL_NET_LICENSE = zlib
+SDL_NET_LICENSE = Zlib
 SDL_NET_LICENSE_FILES = COPYING
 
 SDL_NET_CONF_OPTS = \

package/sdl_ttf/sdl_ttf.mk

@@ -7,7 +7,7 @@
 SDL_TTF_VERSION = 2.0.11
 SDL_TTF_SOURCE = SDL_ttf-$(SDL_TTF_VERSION).tar.gz
 SDL_TTF_SITE = http://www.libsdl.org/projects/SDL_ttf/release
-SDL_TTF_LICENSE = zlib
+SDL_TTF_LICENSE = Zlib
 SDL_TTF_LICENSE_FILES = COPYING
 
 SDL_TTF_INSTALL_STAGING = YES

package/tinyxml/tinyxml.mk

@@ -10,7 +10,7 @@ TINYXML_SITE = http://mirrors.xbmc.org/build-deps/sources
 # configure.ac which is not present in mainline.
 TINYXML_AUTORECONF = YES
 TINYXML_INSTALL_STAGING = YES
-TINYXML_LICENSE = zlib
+TINYXML_LICENSE = Zlib
 TINYXML_LICENSE_FILES = README
 
 $(eval $(autotools-package))

package/tinyxml2/tinyxml2.mk

@@ -6,7 +6,7 @@
 
 TINYXML2_VERSION = 3.0.0
 TINYXML2_SITE = $(call github,leethomason,tinyxml2,$(TINYXML2_VERSION))
-TINYXML2_LICENSE = zlib
+TINYXML2_LICENSE = Zlib
 TINYXML2_LICENSE_FILES = readme.md
 TINYXML2_INSTALL_STAGING = YES
 

package/zlib/zlib.mk

@@ -7,7 +7,7 @@
 ZLIB_VERSION = 1.2.11
 ZLIB_SOURCE = zlib-$(ZLIB_VERSION).tar.xz
 ZLIB_SITE = http://www.zlib.net
-ZLIB_LICENSE = zlib license
+ZLIB_LICENSE = Zlib
 ZLIB_LICENSE_FILES = README
 ZLIB_INSTALL_STAGING = YES