ENH: Add a depends check step to custom targets. Add support for the IMPLICIT_DEPENDS feature of custom commands when building in custom targets. Convert multiple-output pair checks to be per-target instead of global.

4 files changed, 27 insertions, 7 deletions

diff --git a/Tests/BuildDepends/CMakeLists.txt b/Tests/BuildDepends/CMakeLists.txt
index 428d5ed67f..90b6b92e36 100644
--- a/Tests/BuildDepends/CMakeLists.txt
+++ b/Tests/BuildDepends/CMakeLists.txt
@@ -13,6 +13,8 @@ write_file(${BuildDepends_BINARY_DIR}/Project/foo.cxx
 
 file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot.hxx.in
   "static const char* zot = \"zot\";\n")
+file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_custom.hxx.in
+  "static const char* zot_custom = \"zot_custom\";\n")
 
 message("Building project first time")
 try_compile(RESULT 
@@ -70,11 +72,11 @@ execute_process(COMMAND ${zot} OUTPUT_VARIABLE out RESULT_VARIABLE runResult)
 string(REGEX REPLACE "[\r\n]" " " out "${out}")
 message("Run result: ${runResult} Output: \"${out}\"")
 
-if("${out}" STREQUAL "zot ")
+if("${out}" STREQUAL "[zot] [zot_custom] ")
   message("Worked!")
-else("${out}" STREQUAL "zot ")
+else("${out}" STREQUAL "[zot] [zot_custom] ")
   message(SEND_ERROR "Project did not initially build properly: ${out}")
-endif("${out}" STREQUAL "zot ")
+endif("${out}" STREQUAL "[zot] [zot_custom] ")
 
 message("Waiting 3 seconds...")
 # any additional argument will cause ${bar} to wait forever
@@ -85,6 +87,8 @@ write_file(${BuildDepends_BINARY_DIR}/Project/foo.cxx
   "const char* foo() { return \"foo changed\";}" )
 file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot.hxx.in
   "static const char* zot = \"zot changed\";\n")
+file(WRITE ${BuildDepends_BINARY_DIR}/Project/zot_custom.hxx.in
+  "static const char* zot_custom = \"zot_custom changed\";\n")
 
 message("Building project second time")
 try_compile(RESULT 
@@ -137,8 +141,8 @@ execute_process(COMMAND ${zot} OUTPUT_VARIABLE out RESULT_VARIABLE runResult)
 string(REGEX REPLACE "[\r\n]" " " out "${out}")
 message("Run result: ${runResult} Output: \"${out}\"")
 
-if("${out}" STREQUAL "zot changed ")
+if("${out}" STREQUAL "[zot changed] [zot_custom changed] ")
   message("Worked!")
-else("${out}" STREQUAL "zot changed ")
+else("${out}" STREQUAL "[zot changed] [zot_custom changed] ")
   message(SEND_ERROR "Project did not rebuild properly!")
-endif("${out}" STREQUAL "zot changed ")
+endif("${out}" STREQUAL "[zot changed] [zot_custom changed] ")
diff --git a/Tests/BuildDepends/Project/CMakeLists.txt b/Tests/BuildDepends/Project/CMakeLists.txt
index 2651adf098..01bbf44eef 100644
--- a/Tests/BuildDepends/Project/CMakeLists.txt
+++ b/Tests/BuildDepends/Project/CMakeLists.txt
@@ -32,9 +32,12 @@ add_executable(bar bar.cxx
 IF("${CMAKE_GENERATOR}" MATCHES "Make")
   # Test the IMPLICIT_DEPENDS feature.
   SET(ZOT_DEPENDS IMPLICIT_DEPENDS CXX ${CMAKE_CURRENT_SOURCE_DIR}/dep.cxx)
+  SET(ZOT_CUSTOM_DEP
+    IMPLICIT_DEPENDS CXX ${CMAKE_CURRENT_SOURCE_DIR}/dep_custom.cxx)
 ELSE("${CMAKE_GENERATOR}" MATCHES "Make")
   # No IMPLICIT_DEPENDS...just depend directly.
   SET(ZOT_DEPENDS DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/zot.hxx.in)
+  SET(ZOT_CUSTOM_DEP DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/zot_custom.hxx.in)
 ENDIF("${CMAKE_GENERATOR}" MATCHES "Make")
 add_custom_command(
   OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zot.hxx
@@ -44,4 +47,15 @@ add_custom_command(
   ${ZOT_DEPENDS}
   )
 
+add_custom_command(
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zot_custom.hxx
+  COMMAND ${CMAKE_COMMAND} -E copy
+  ${CMAKE_CURRENT_BINARY_DIR}/zot_custom.hxx.in
+  ${CMAKE_CURRENT_BINARY_DIR}/zot_custom.hxx
+  ${ZOT_CUSTOM_DEP}
+  )
+add_custom_target(zot_custom ALL DEPENDS
+  ${CMAKE_CURRENT_BINARY_DIR}/zot_custom.hxx)
+
 add_executable(zot zot.cxx ${CMAKE_CURRENT_BINARY_DIR}/zot.hxx)
+add_dependencies(zot zot_custom)
diff --git a/Tests/BuildDepends/Project/dep_custom.cxx b/Tests/BuildDepends/Project/dep_custom.cxx
new file mode 100644
index 0000000000..b6ac54847b
--- /dev/null
+++ b/Tests/BuildDepends/Project/dep_custom.cxx
@@ -0,0 +1 @@
+#include <zot_custom.hxx.in>
diff --git a/Tests/BuildDepends/Project/zot.cxx b/Tests/BuildDepends/Project/zot.cxx
index 703ca384b8..356b0787bb 100644
--- a/Tests/BuildDepends/Project/zot.cxx
+++ b/Tests/BuildDepends/Project/zot.cxx
@@ -1,9 +1,10 @@
 #include <zot.hxx>
+#include <zot_custom.hxx>
 #include <stdio.h>
 
 int main()
 {
-  printf("%s\n", zot);
+  printf("[%s] [%s]\n", zot, zot_custom);
   fflush(stdout);
   return 0;
 }