Commit 1563574740

@@ -8,10 +8,26 @@ endif()
 project(zig C CXX)
 set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
 
+
 set(ZIG_VERSION_MAJOR 0)
 set(ZIG_VERSION_MINOR 0)
 set(ZIG_VERSION_PATCH 0)
 set(ZIG_VERSION "${ZIG_VERSION_MAJOR}.${ZIG_VERSION_MINOR}.${ZIG_VERSION_PATCH}")
+
+find_program(GIT_EXE NAMES git)
+if(GIT_EXE)
+    execute_process(
+        COMMAND ${GIT_EXE} name-rev HEAD --tags --name-only --no-undefined --always
+        OUTPUT_VARIABLE ZIG_GIT_REV
+        OUTPUT_STRIP_TRAILING_WHITESPACE)
+    if(ZIG_GIT_REV MATCHES "\\\\^0$")
+        if(NOT("${ZIG_GIT_REV}" STREQUAL "${ZIG_VERSION}^0"))
+            message("WARNING: Tag does not match configured Zig version")
+        endif()
+    else()
+        set(ZIG_VERSION "${ZIG_VERSION_MAJOR}.${ZIG_VERSION_MINOR}.${ZIG_VERSION_PATCH}.${ZIG_GIT_REV}")
+    endif()
+endif()
 message("Configuring zig version ${ZIG_VERSION}")
 
 set(ZIG_LIBC_LIB_DIR "" CACHE STRING "Default native target libc directory where crt1.o can be found")