make sure that git repo info is only added if the musrfit project source is indeed a git repo, and not e.g. a download.

src/musredit_qt6/musrWiz/CMakeLists.txt

@@ -1,5 +1,12 @@
 #--- musrWiz for Qt > 6.0 -----------------------------------------------------
 
+#--- check if project source is repo ------------------------------------------
+if (IS_GIT_REPO)
+  set(HAVE_GIT_REV_H "-DHAVE_GIT_REV_H")  
+else (IS_GIT_REPO)
+  set(HAVE_GIT_REV_H "")  
+endif (IS_GIT_REPO)
+
 set(qt_libs Qt6::Core Qt6::Widgets Qt6::Svg Qt6::Xml)
 
 set(musrWiz_src
@@ -51,6 +58,11 @@ target_include_directories(musrWiz
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../../include>
 )
 
+target_compile_options(musrWiz
+  PRIVATE
+    "${HAVE_GIT_REV_H}"  
+)
+
 target_link_libraries(musrWiz ${qt_libs})
 
 #--- installation info --------------------------------------------------------

src/musredit_qt6/musrWiz/musrWiz.cpp

@@ -6,7 +6,10 @@
 #include <QMessageBox>
 #include <QObject>
 
+#ifdef HAVE_GIT_REV_H
 #include "git-revision.h"
+#endif
+
 #include "musrWiz.h"
 #include "PAdmin.h"
 #include "PMusrWiz.h"
@@ -53,7 +56,11 @@ int main(int argc, char *argv[])
 
   if (argc == 2) {
     if (!strcmp(argv[1], "--version") || (!strcmp(argv[1], "-v"))) {
+#ifdef HAVE_GIT_REV_H
       std::cout << std::endl << "musrWiz - git-branch: " << GIT_BRANCH << ", git-rev: " << GIT_CURRENT_SHA1 << std::endl << std::endl;
+#else
+      std::cout << std::endl << "musrWiz - git-branch: unknown, git-rev: unknown." << std::endl << std::endl;
+#endif
       return 0;
     } else if (!strcmp(argv[1], "--help")) {
       musrWiz_syntax();