CMake: identify detached head state

when describing repository branch/tag/commit
dyfer · Mar 2, 2022 · 8b18880 · 8b18880
1 parent 712c32e
commit 8b18880
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/SCVersion.txt b/SCVersion.txt
@@ -27,13 +27,18 @@ if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
   set(GIT_REF_TYPE "branch")
 
   if(GIT_BRANCH_OR_TAG STREQUAL "HEAD")
-    set(GIT_REF_TYPE "tag")
     execute_process(
-      COMMAND git describe --tags
+      COMMAND git describe --tags 2>/dev/null
       WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
       OUTPUT_VARIABLE GIT_BRANCH_OR_TAG
       OUTPUT_STRIP_TRAILING_WHITESPACE
     )
+    if(GIT_BRANCH_OR_TAG STREQUAL "")
+      set(GIT_REF_TYPE "detached")
+      set(GIT_BRANCH_OR_TAG "HEAD")
+    else()
+      set(GIT_REF_TYPE "tag")
+    endif()
   endif()
 
   execute_process(