glslang: new port

graphics/glslang/Portfile

@@ -0,0 +1,21 @@
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
+
+PortSystem          1.0
+PortGroup           github 1.0
+PortGroup           cmake 1.0
+
+github.setup        KhronosGroup glslang 7.11.3113
+
+categories          graphics
+platforms           darwin
+license             {BSD Permissive}
+
+maintainers         {itanimul.li:josh @eintw1ck} openmaintainer
+description         Shader compiler libraries & tools
+long_description    OpenGL and OpenGL ES reference compiler for shading languages
+
+homepage            https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/
+checksums           sha256  18f6866f1607b842abfa461dd6e8728f6fa173d1fa95a5cdc625afa10c878506 \
+                    rmd160  83c7596f4438707aa4beb27102ac9e6372062419 \
+                    size    2495519
+use_zip             no