Test OBJECT library failure cases

Add "RunCMake.ObjectLibrary" test to verify that unsupported use cases
are rejected with errors:

* An OBJECT library may not reference another object library
* An OBJECT library may not be referenced in target_link_libraries
* An OBJECT library may not contain non-compiling sources
* An OBJECT library may not have pre/post build/link commands
* An OBJECT library may not be installed, exported, or imported

Also verify that invalid $<TARGET_OBJECTS:...> expressions are
diagnosed.

Tests/RunCMake/CMakeLists.txt

@@ -40,5 +40,7 @@ macro(add_RunCMake_test test)
     )
 endmacro()
 
+add_RunCMake_test(ObjectLibrary)
+
 add_RunCMake_test(build_command)
 add_RunCMake_test(find_package)

Tests/RunCMake/ObjectLibrary/BadObjSource1-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/BadObjSource1-stderr.txt

@@ -0,0 +1,8 @@
+CMake Error at BadObjSource1.cmake:1 \(add_library\):
+  OBJECT library "A" contains:
+
+    bad.def
+
+  but may contain only headers and sources that compile.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/BadObjSource1.cmake

@@ -0,0 +1 @@
+add_library(A OBJECT a.c bad.def)

Tests/RunCMake/ObjectLibrary/BadObjSource2-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/BadObjSource2-stderr.txt

@@ -0,0 +1,8 @@
+CMake Error at BadObjSource2.cmake:1 \(add_library\):
+  OBJECT library "A" contains:
+
+    bad.obj
+
+  but may contain only headers and sources that compile.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/BadObjSource2.cmake

@@ -0,0 +1 @@
+add_library(A OBJECT a.c bad.obj)

Tests/RunCMake/ObjectLibrary/BadSourceExpression1-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/BadSourceExpression1-stderr.txt

@@ -0,0 +1,6 @@
+CMake Error at BadSourceExpression1.cmake:1 \(add_library\):
+  Unrecognized generator expression:
+
+    \$<BAD_EXPRESSION>
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/BadSourceExpression1.cmake

@@ -0,0 +1 @@
+add_library(A STATIC a.c $<BAD_EXPRESSION>)

Tests/RunCMake/ObjectLibrary/BadSourceExpression2-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/BadSourceExpression2-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at BadSourceExpression2.cmake:1 \(add_library\):
+  Objects of target "DoesNotExist" referenced but no such target exists.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/BadSourceExpression2.cmake

@@ -0,0 +1 @@
+add_library(A STATIC a.c $<TARGET_OBJECTS:DoesNotExist>)

Tests/RunCMake/ObjectLibrary/BadSourceExpression3-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/BadSourceExpression3-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at BadSourceExpression3.cmake:2 \(add_library\):
+  Objects of target "NotObjLib" referenced but is not an OBJECT library.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/BadSourceExpression3.cmake

@@ -0,0 +1,2 @@
+add_library(NotObjLib STATIC a.c)
+add_library(A STATIC a.c $<TARGET_OBJECTS:NotObjLib>)

Tests/RunCMake/ObjectLibrary/CMakeLists.txt

@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 2.8)
+project(${RunCMake_TEST} C)
+include(${RunCMake_TEST}.cmake)

Tests/RunCMake/ObjectLibrary/Export-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/Export-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at Export.cmake:2 \(export\):
+  export given OBJECT library "A" which may not be exported.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/Export.cmake

@@ -0,0 +1,2 @@
+add_library(A OBJECT a.c)
+export(TARGETS A FILE AExport.cmake)

Tests/RunCMake/ObjectLibrary/Import-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/Import-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at Import.cmake:1 \(add_library\):
+  The OBJECT library type may not be used for IMPORTED libraries.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/Import.cmake

@@ -0,0 +1 @@
+add_library(A OBJECT IMPORTED)

Tests/RunCMake/ObjectLibrary/Install-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/Install-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at Install.cmake:2 \(install\):
+  install TARGETS given OBJECT library "A" which may not be installed.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/Install.cmake

@@ -0,0 +1,2 @@
+add_library(A OBJECT a.c)
+install(TARGETS A DESTINATION lib)

Tests/RunCMake/ObjectLibrary/LinkObjLHS-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/LinkObjLHS-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at LinkObjLHS.cmake:2 \(target_link_libraries\):
+  Object library target "AnObjLib" may not link to anything.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/LinkObjLHS.cmake

@@ -0,0 +1,2 @@
+add_library(AnObjLib OBJECT a.c)
+target_link_libraries(AnObjLib OtherLib)

Tests/RunCMake/ObjectLibrary/LinkObjRHS1-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/LinkObjRHS1-stderr.txt

@@ -0,0 +1,6 @@
+CMake Error at LinkObjRHS1.cmake:3 \(target_link_libraries\):
+  Target "AnObjLib" of type OBJECT_LIBRARY may not be linked into another
+  target.  One may link only to STATIC or SHARED libraries, or to executables
+  with the ENABLE_EXPORTS property set.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/LinkObjRHS1.cmake

@@ -0,0 +1,3 @@
+add_library(A STATIC a.c)
+add_library(AnObjLib OBJECT a.c)
+target_link_libraries(A AnObjLib)

Tests/RunCMake/ObjectLibrary/LinkObjRHS2-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/LinkObjRHS2-stderr.txt

@@ -0,0 +1,6 @@
+CMake Error at LinkObjRHS2.cmake:1 \(add_library\):
+  Target "A" links to OBJECT library "AnObjLib" but this is not allowed.  One
+  may link only to STATIC or SHARED libraries, or to executables with the
+  ENABLE_EXPORTS property set.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/LinkObjRHS2.cmake

@@ -0,0 +1,3 @@
+add_library(A SHARED a.c)
+target_link_libraries(A AnObjLib)
+add_library(AnObjLib OBJECT a.c)

Tests/RunCMake/ObjectLibrary/ObjWithObj-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/ObjWithObj-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at ObjWithObj.cmake:2 \(add_library\):
+  Only executables and non-OBJECT libraries may reference target objects.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/ObjWithObj.cmake

@@ -0,0 +1,2 @@
+add_library(A OBJECT a.c)
+add_library(B OBJECT $<TARGET_OBJECTS:A>)

Tests/RunCMake/ObjectLibrary/PostBuild-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/PostBuild-stderr.txt

@@ -0,0 +1,5 @@
+CMake Error at PostBuild.cmake:2 \(add_custom_command\):
+  Target "A" is an OBJECT library that may not have PRE_BUILD, PRE_LINK, or
+  POST_BUILD commands.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/PostBuild.cmake

@@ -0,0 +1,4 @@
+add_library(A OBJECT a.c)
+add_custom_command(TARGET A POST_BUILD
+  COMMAND  ${CMAKE_COMMAND} -E echo "A post-build"
+  )

Tests/RunCMake/ObjectLibrary/PreBuild-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/PreBuild-stderr.txt

@@ -0,0 +1,5 @@
+CMake Error at PreBuild.cmake:2 \(add_custom_command\):
+  Target "A" is an OBJECT library that may not have PRE_BUILD, PRE_LINK, or
+  POST_BUILD commands.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/PreBuild.cmake

@@ -0,0 +1,4 @@
+add_library(A OBJECT a.c)
+add_custom_command(TARGET A PRE_BUILD
+  COMMAND  ${CMAKE_COMMAND} -E echo "A pre-build"
+  )

Tests/RunCMake/ObjectLibrary/PreLink-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/ObjectLibrary/PreLink-stderr.txt

@@ -0,0 +1,5 @@
+CMake Error at PreLink.cmake:2 \(add_custom_command\):
+  Target "A" is an OBJECT library that may not have PRE_BUILD, PRE_LINK, or
+  POST_BUILD commands.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/ObjectLibrary/PreLink.cmake

@@ -0,0 +1,4 @@
+add_library(A OBJECT a.c)
+add_custom_command(TARGET A PRE_LINK
+  COMMAND  ${CMAKE_COMMAND} -E echo "A pre-link"
+  )

Tests/RunCMake/ObjectLibrary/RunCMakeTest.cmake

@@ -0,0 +1,17 @@
+include(RunCMake)
+
+run_cmake(BadSourceExpression1)
+run_cmake(BadSourceExpression2)
+run_cmake(BadSourceExpression3)
+run_cmake(BadObjSource1)
+run_cmake(BadObjSource2)
+run_cmake(Export)
+run_cmake(Import)
+run_cmake(Install)
+run_cmake(LinkObjLHS)
+run_cmake(LinkObjRHS1)
+run_cmake(LinkObjRHS2)
+run_cmake(ObjWithObj)
+run_cmake(PostBuild)
+run_cmake(PreBuild)
+run_cmake(PreLink)

Tests/RunCMake/ObjectLibrary/a.c

@@ -0,0 +1 @@
+int a(void) { return 0; }