Normalize OBJECT_DEPENDS paths to match custom commands (#15366)

Custom command path normalization added in commit v3.1.0-rc1~471^2
(add_custom_command: Normalize OUTPUT and DEPENDS paths, 2014-05-28)
broke use of OBJECT_DEPENDS to bring in custom commands because the
latter paths were not normalized too.  Normalize them and add a test
case.

Reported-by: Daniel v. Gerpen

3 files changed, 19 insertions, 0 deletions

diff --git a/Tests/CustomCommand/CMakeLists.txt b/Tests/CustomCommand/CMakeLists.txt
index b97cd16..7ef3540 100644
--- a/Tests/CustomCommand/CMakeLists.txt
+++ b/Tests/CustomCommand/CMakeLists.txt
@@ -153,6 +153,19 @@ add_custom_command(OUTPUT ${PROJECT_BINARY_DIR}/foo.c
   ${PROJECT_BINARY_DIR}/foo.c
   )
 
+# Test using OBJECT_DEPENDS to bring in a custom command.
+# Use a path that can be simplified to make sure paths
+# are consistently normalized.
+add_custom_command(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/subdir/../subdir/subdir.h
+  COMMAND ${CMAKE_COMMAND} -E copy
+            ${CMAKE_CURRENT_SOURCE_DIR}/subdir.h.in
+            ${CMAKE_CURRENT_BINARY_DIR}/subdir/subdir.h
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/subdir.h.in
+  )
+set_property(SOURCE ${PROJECT_BINARY_DIR}/foo.c PROPERTY
+  OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/subdir/../subdir/subdir.h)
+
 # Add custom command to generate not_included.h, which is a header
 # file that is not included by any source in this project.  This will
 # test whether all custom command outputs explicitly listed as sources
diff --git a/Tests/CustomCommand/foo.in b/Tests/CustomCommand/foo.in
index 0c5021c..5ca6315 100644
--- a/Tests/CustomCommand/foo.in
+++ b/Tests/CustomCommand/foo.in
@@ -7,6 +7,11 @@
 int generated();
 int wrapped();
 
+#include "subdir/subdir.h"
+#ifndef SUBDIR_DEF
+# error SUBDIR_DEF not defined
+#endif
+
 int main ()
 {
   if (generated()*wrapped()*doc() == 3*5*7)
diff --git a/Tests/CustomCommand/subdir.h.in b/Tests/CustomCommand/subdir.h.in
new file mode 100644
index 0000000..1e50750
--- /dev/null
+++ b/Tests/CustomCommand/subdir.h.in
@@ -0,0 +1 @@
+#define SUBDIR_DEF