Add generator expression support to per-source COMPILE_DEFINITIONS

This allows users to specify different genex-based compile definitions for each file in a target.

Fixes: #17508

3 files changed, 20 insertions, 3 deletions

diff --git a/Tests/GeneratorExpression/CMakeLists.txt b/Tests/GeneratorExpression/CMakeLists.txt
index 83fd11d..5165970 100644
--- a/Tests/GeneratorExpression/CMakeLists.txt
+++ b/Tests/GeneratorExpression/CMakeLists.txt
@@ -258,8 +258,13 @@ add_custom_target(check-part4 ALL
   VERBATIM
   )
 
-add_executable(srcgenex srcgenex.c)
-set_property(SOURCE srcgenex.c PROPERTY COMPILE_FLAGS "-DNAME=$<TARGET_PROPERTY:NAME>")
+#-----------------------------------------------------------------------------
+# Cover source file properties with generator expressions.
+add_executable(srcgenex_flags srcgenex_flags.c)
+set_property(SOURCE srcgenex_flags.c PROPERTY COMPILE_FLAGS "-DNAME=$<TARGET_PROPERTY:NAME>")
+
+add_executable(srcgenex_defs srcgenex_defs.c)
+set_property(SOURCE srcgenex_defs.c PROPERTY COMPILE_DEFINITIONS NAME=$<TARGET_PROPERTY:NAME>)
 
 #-----------------------------------------------------------------------------
 # Cover test properties with generator expressions.
diff --git a/Tests/GeneratorExpression/srcgenex.c b/Tests/GeneratorExpression/srcgenex_defs.c
index 56d3c3f..883e631 100644
--- a/Tests/GeneratorExpression/srcgenex.c
+++ b/Tests/GeneratorExpression/srcgenex_defs.c
@@ -1,4 +1,4 @@
-int srcgenex(void)
+int srcgenex_defs(void)
 {
   return 0;
 }
diff --git a/Tests/GeneratorExpression/srcgenex_flags.c b/Tests/GeneratorExpression/srcgenex_flags.c
new file mode 100644
index 0000000..3de2b12
--- /dev/null
+++ b/Tests/GeneratorExpression/srcgenex_flags.c
@@ -0,0 +1,12 @@
+int srcgenex_flags(void)
+{
+  return 0;
+}
+
+int main(int argc, char* argv[])
+{
+#ifndef NAME
+#error NAME not defined
+#endif
+  return NAME();
+}