Test CMP0015 OLD and NEW link_directories behavior

We create a LinkDirectory test to check that the policy OLD and NEW
behaviors work as documented.  See issue #9697.

1 files changed, 47 insertions, 0 deletions

diff --git a/Tests/LinkDirectory/CMakeLists.txt b/Tests/LinkDirectory/CMakeLists.txt
new file mode 100644
index 0000000..7356b27
--- /dev/null
+++ b/Tests/LinkDirectory/CMakeLists.txt
@@ -0,0 +1,47 @@
+cmake_minimum_required(VERSION 2.8)
+project(LinkDirectory C)
+
+# Put the subproject source tree in our build tree so it can refer to
+# link directories relative to its source.
+if(NOT "${LinkDirectory_SOURCE_DIR}" STREQUAL "${LinkDirectory_BINARY_DIR}")
+  file(COPY External/ DESTINATION External PATTERN CVS EXCLUDE)
+endif()
+
+# Build a library into the subproject source tree.
+add_library(mylibA STATIC mylibA.c)
+set_property(TARGET mylibA PROPERTY
+  ARCHIVE_OUTPUT_DIRECTORY "${LinkDirectory_BINARY_DIR}/External/lib")
+get_property(mylibA TARGET mylibA PROPERTY LOCATION)
+
+# Build a library into our build tree relative to the subproject build tree.
+add_library(mylibB STATIC mylibB.c)
+set_property(TARGET mylibB PROPERTY
+  ARCHIVE_OUTPUT_DIRECTORY "${LinkDirectory_BINARY_DIR}/lib")
+get_property(mylibB TARGET mylibB PROPERTY LOCATION)
+
+# Create a custom target to drive the subproject build.
+include(ExternalProject)
+ExternalProject_Add(ExternalTarget
+  SOURCE_DIR "${LinkDirectory_BINARY_DIR}/External"
+  BINARY_DIR "${LinkDirectory_BINARY_DIR}/External-build"
+  CMAKE_ARGS "-DCMAKE_RUNTIME_OUTPUT_DIRECTORY=${LinkDirectory_BINARY_DIR}/bin"
+  PREFIX "${LinkDirectory_BINARY_DIR}/External-build/root"
+  DOWNLOAD_COMMAND ""
+  INSTALL_COMMAND ""
+  )
+
+# Add a step to wipe out the subproject executable after our libraries
+# change.  This is needed because the subproject cannot depend on them
+# directly because it does not know the full paths to the libraries.
+# (The purpose of this test is to check that link_directories works.)
+ExternalProject_Add_Step(ExternalTarget cleanup
+  COMMAND ${CMAKE_COMMAND} -E remove_directory ${LinkDirectory_BINARY_DIR}/bin
+  DEPENDEES download
+  DEPENDERS configure
+  DEPENDS ${mylibA} ${mylibB}
+    "${LinkDirectory_BINARY_DIR}/External/CMakeLists.txt"
+    "${LinkDirectory_BINARY_DIR}/External/myexe.c"
+  )
+
+# Make the subproject build after our targets.
+add_dependencies(ExternalTarget mylibA mylibB)