Fixed substituted string with paths and version
Use `@CMAKE_INSTALL_PREFIX@`, `${prefix}/@CMAKE_INSTALL_INCLUDEDIR@` and
`@CMAKE_PROJECT_VERSION@`.
diff --git a/spirv-headers.pc.in b/spirv-headers.pc.in
index ccc4205..282144f 100644
--- a/spirv-headers.pc.in
+++ b/spirv-headers.pc.in
@@ -1,9 +1,9 @@
-prefix=@prefix@
-includedir=@includedir@
+prefix=@CMAKE_INSTALL_PREFIX@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
Name: spirv-headers
Description: Header files from the SPIR-V registry
-Version: @VERSION@
+Version: @CMAKE_PROJECT_VERSION@
Requires:
Libs:
Cflags: -I${includedir}
