target_link_libraries: Add LINK_(PUBLIC|PRIVATE) options

Makes it possible to specify the link dependencies and link
interfaces in one command without repetition.

8 files changed, 127 insertions, 0 deletions

diff --git a/Tests/CMakeCommands/target_link_libraries/CMakeLists.txt b/Tests/CMakeCommands/target_link_libraries/CMakeLists.txt
new file mode 100644
index 0000000..1faa888
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/CMakeLists.txt
@@ -0,0 +1,58 @@
+cmake_minimum_required(VERSION 2.8)
+
+project(target_link_libraries)
+
+file(WRITE
+  "${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
+  "int main() { return 0; }
+"
+)
+
+add_executable(
+  target_link_libraries
+  "${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
+)
+
+macro(ASSERT_PROPERTY _target _property _value)
+  get_target_property(_out ${_target} ${_property})
+  if (NOT _out)
+    set(_out "")
+  endif()
+  if (NOT "${_out}" STREQUAL "${_value}")
+    message(SEND_ERROR "Target ${_target} does not have property ${_property} with value ${_value}. Actual value: ${_out}")
+  endif()
+endmacro()
+
+include(GenerateExportHeader)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+add_library(depA SHARED depA.cpp)
+generate_export_header(depA)
+
+add_library(depB SHARED depB.cpp)
+generate_export_header(depB)
+
+target_link_libraries(depB LINK_PRIVATE depA)
+
+add_library(depC SHARED depC.cpp)
+generate_export_header(depC)
+
+target_link_libraries(depC LINK_PUBLIC depA)
+
+assert_property(depA LINK_INTERFACE_LIBRARIES "")
+assert_property(depB LINK_INTERFACE_LIBRARIES "")
+assert_property(depC LINK_INTERFACE_LIBRARIES "depA")
+
+add_executable(targetA targetA.cpp)
+
+target_link_libraries(targetA LINK_INTERFACE_LIBRARIES depA depB)
+
+assert_property(targetA LINK_INTERFACE_LIBRARIES "depA;depB")
+
+set_target_properties(targetA PROPERTIES LINK_INTERFACE_LIBRARIES "")
+
+assert_property(targetA LINK_INTERFACE_LIBRARIES "")
+
+target_link_libraries(targetA depB depC)
+
+assert_property(targetA LINK_INTERFACE_LIBRARIES "")
diff --git a/Tests/CMakeCommands/target_link_libraries/depA.cpp b/Tests/CMakeCommands/target_link_libraries/depA.cpp
new file mode 100644
index 0000000..c2e8e7b
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/depA.cpp
@@ -0,0 +1,7 @@
+
+#include "depA.h"
+
+int DepA::foo()
+{
+  return 0;
+}
diff --git a/Tests/CMakeCommands/target_link_libraries/depA.h b/Tests/CMakeCommands/target_link_libraries/depA.h
new file mode 100644
index 0000000..7a85948
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/depA.h
@@ -0,0 +1,7 @@
+
+#include "depa_export.h"
+
+struct DEPA_EXPORT DepA
+{
+  int foo();
+};
diff --git a/Tests/CMakeCommands/target_link_libraries/depB.cpp b/Tests/CMakeCommands/target_link_libraries/depB.cpp
new file mode 100644
index 0000000..97e5be2
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/depB.cpp
@@ -0,0 +1,11 @@
+
+#include "depB.h"
+
+#include "depA.h"
+
+int DepB::foo()
+{
+  DepA a;
+
+  return 0;
+}
diff --git a/Tests/CMakeCommands/target_link_libraries/depB.h b/Tests/CMakeCommands/target_link_libraries/depB.h
new file mode 100644
index 0000000..e617813
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/depB.h
@@ -0,0 +1,7 @@
+
+#include "depb_export.h"
+
+struct DEPB_EXPORT DepB
+{
+  int foo();
+};
diff --git a/Tests/CMakeCommands/target_link_libraries/depC.cpp b/Tests/CMakeCommands/target_link_libraries/depC.cpp
new file mode 100644
index 0000000..93410a8
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/depC.cpp
@@ -0,0 +1,13 @@
+
+#include "depC.h"
+
+int DepC::foo()
+{
+  return 0;
+}
+
+DepA DepC::getA()
+{
+  DepA a;
+  return a;
+}
\ No newline at end of file
diff --git a/Tests/CMakeCommands/target_link_libraries/depC.h b/Tests/CMakeCommands/target_link_libraries/depC.h
new file mode 100644
index 0000000..4d65c9e
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/depC.h
@@ -0,0 +1,12 @@
+
+#include "depc_export.h"
+
+#include "depA.h"
+
+struct DEPC_EXPORT DepC
+{
+  int foo();
+
+  DepA getA();
+
+};
diff --git a/Tests/CMakeCommands/target_link_libraries/targetA.cpp b/Tests/CMakeCommands/target_link_libraries/targetA.cpp
new file mode 100644
index 0000000..3c6472e
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/targetA.cpp
@@ -0,0 +1,12 @@
+
+#include "depB.h"
+#include "depC.h"
+
+int main(int argc, char **argv)
+{
+  DepA a;
+  DepB b;
+  DepC c;
+
+  return a.foo() + b.foo() + c.foo();
+}