From 434f5cef657a001bcfbaa5e8b5c4fba80215efb5 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 26 Apr 2017 08:35:11 -0400
Subject: Tests: Add case for IMPLICIT_DEPENDS in custom target

Use the `IMPLICIT_DEPENDS` option of `add_custom_command` and place the
command in a custom target.  Verify that `INCLUDE_DIRECTORIES` of that
custom target are honored.  This is a case that was not really designed
to work but happens to work, is useful, and makes sense.  Add a test
case make sure it continues to work.

Issue: #16830
---
 Tests/RunCMake/BuildDepends/MakeCustomIncludes.cmake       | 13 +++++++++++++
 Tests/RunCMake/BuildDepends/MakeCustomIncludes.cxx         |  6 ++++++
 Tests/RunCMake/BuildDepends/MakeCustomIncludes.step1.cmake |  3 +++
 Tests/RunCMake/BuildDepends/MakeCustomIncludes.step2.cmake |  3 +++
 Tests/RunCMake/BuildDepends/RunCMakeTest.cmake             |  1 +
 5 files changed, 26 insertions(+)
 create mode 100644 Tests/RunCMake/BuildDepends/MakeCustomIncludes.cmake
 create mode 100644 Tests/RunCMake/BuildDepends/MakeCustomIncludes.cxx
 create mode 100644 Tests/RunCMake/BuildDepends/MakeCustomIncludes.step1.cmake
 create mode 100644 Tests/RunCMake/BuildDepends/MakeCustomIncludes.step2.cmake

diff --git a/Tests/RunCMake/BuildDepends/MakeCustomIncludes.cmake b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.cmake
new file mode 100644
index 0000000..0f92e0e
--- /dev/null
+++ b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.cmake
@@ -0,0 +1,13 @@
+add_custom_command(
+  OUTPUT output.cxx
+  COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/MakeCustomIncludes.cxx output.cxx
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/MakeCustomIncludes.cxx
+  IMPLICIT_DEPENDS CXX ${CMAKE_CURRENT_SOURCE_DIR}/MakeCustomIncludes.cxx)
+add_custom_target(generate ALL DEPENDS output.cxx)
+set_property(TARGET generate PROPERTY INCLUDE_DIRECTORIES ${CMAKE_CURRENT_BINARY_DIR})
+
+file(GENERATE OUTPUT check-$<LOWER_CASE:$<CONFIG>>.cmake CONTENT "
+set(check_pairs
+  \"${CMAKE_CURRENT_BINARY_DIR}/output.cxx|${CMAKE_CURRENT_BINARY_DIR}/MakeCustomIncludes.h\"
+  )
+")
diff --git a/Tests/RunCMake/BuildDepends/MakeCustomIncludes.cxx b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.cxx
new file mode 100644
index 0000000..9a0edef
--- /dev/null
+++ b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.cxx
@@ -0,0 +1,6 @@
+#include "MakeCustomIncludes.h"
+
+int main()
+{
+  return MakeCustomIncludes();
+}
diff --git a/Tests/RunCMake/BuildDepends/MakeCustomIncludes.step1.cmake b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.step1.cmake
new file mode 100644
index 0000000..6bb01a6
--- /dev/null
+++ b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.step1.cmake
@@ -0,0 +1,3 @@
+file(WRITE "${RunCMake_TEST_BINARY_DIR}/MakeCustomIncludes.h" [[
+inline int MakeCustomIncludes() { return 1; }
+]])
diff --git a/Tests/RunCMake/BuildDepends/MakeCustomIncludes.step2.cmake b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.step2.cmake
new file mode 100644
index 0000000..6b3151d
--- /dev/null
+++ b/Tests/RunCMake/BuildDepends/MakeCustomIncludes.step2.cmake
@@ -0,0 +1,3 @@
+file(WRITE "${RunCMake_TEST_BINARY_DIR}/MakeCustomIncludes.h" [[
+inline int MakeCustomIncludes() { return 2; }
+]])
diff --git a/Tests/RunCMake/BuildDepends/RunCMakeTest.cmake b/Tests/RunCMake/BuildDepends/RunCMakeTest.cmake
index 736ecff..9941c70 100644
--- a/Tests/RunCMake/BuildDepends/RunCMakeTest.cmake
+++ b/Tests/RunCMake/BuildDepends/RunCMakeTest.cmake
@@ -44,6 +44,7 @@ run_BuildDepends(Custom-Symbolic-and-Byproduct)
 run_BuildDepends(Custom-Always)
 
 if(RunCMake_GENERATOR MATCHES "Make")
+  run_BuildDepends(MakeCustomIncludes)
   if(NOT "${RunCMake_BINARY_DIR}" STREQUAL "${RunCMake_SOURCE_DIR}")
     run_BuildDepends(MakeInProjectOnly)
   endif()
-- 
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