Merge topic 'enable-language-require-compiler'

3e04946 Require CMAKE_<LANG>_COMPILER to be found as a full path
6007f7c CMakeDetermineCompilerId: Always use compiler detected from IDE
332771c CMakeDetermine*Compiler: Remove temporary cache entry

24 files changed, 124 insertions, 4 deletions

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index e84aba2..97bf14d 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -60,6 +60,7 @@ add_RunCMake_test(CTest)
 if(UNIX AND "${CMAKE_TEST_GENERATOR}" MATCHES "Unix Makefiles")
   add_RunCMake_test(CompilerChange)
 endif()
+add_RunCMake_test(CompilerNotFound)
 add_RunCMake_test(Configure)
 add_RunCMake_test(DisallowedCommands)
 add_RunCMake_test(ExternalData)
diff --git a/Tests/RunCMake/CompilerChange/EmptyCompiler-override.cmake b/Tests/RunCMake/CompilerChange/EmptyCompiler-override.cmake
new file mode 100644
index 0000000..28d29e0
--- /dev/null
+++ b/Tests/RunCMake/CompilerChange/EmptyCompiler-override.cmake
@@ -0,0 +1,2 @@
+message(STATUS "CMAKE_C_COMPILER is \"${CMAKE_C_COMPILER}\"")
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/cc.cmake" "set(CMAKE_C_COMPILER \"${CMAKE_C_COMPILER}\")\n")
diff --git a/Tests/RunCMake/CompilerChange/EmptyCompiler-stderr.txt b/Tests/RunCMake/CompilerChange/EmptyCompiler-stderr.txt
index 4745b25..cf3b1b3 100644
--- a/Tests/RunCMake/CompilerChange/EmptyCompiler-stderr.txt
+++ b/Tests/RunCMake/CompilerChange/EmptyCompiler-stderr.txt
@@ -1,5 +1,13 @@
 You have changed variables that require your cache to be deleted.
 Configure will be re-run and you may have to reset some variables.
 The following variables have changed:
-CMAKE_C_COMPILER= *(
-|$)
+CMAKE_C_COMPILER= *
++
+CMake Error at EmptyCompiler.cmake:2 \(enable_language\):
+  No CMAKE_C_COMPILER could be found.
+
+  Tell CMake where to find the compiler by setting either the environment
+  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
+  the compiler, or to the compiler name if it is in the PATH.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:6 \(include\)$
diff --git a/Tests/RunCMake/CompilerChange/EmptyCompiler.cmake b/Tests/RunCMake/CompilerChange/EmptyCompiler.cmake
index c87ec49..06e9e03 100644
--- a/Tests/RunCMake/CompilerChange/EmptyCompiler.cmake
+++ b/Tests/RunCMake/CompilerChange/EmptyCompiler.cmake
@@ -1,3 +1,2 @@
+set(CMAKE_USER_MAKE_RULES_OVERRIDE_C ${CMAKE_CURRENT_LIST_DIR}/EmptyCompiler-override.cmake)
 enable_language(C)
-message(STATUS "CMAKE_C_COMPILER is \"${CMAKE_C_COMPILER}\"")
-file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/cc.cmake" "set(CMAKE_C_COMPILER \"${CMAKE_C_COMPILER}\")\n")
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerC-result.txt b/Tests/RunCMake/CompilerNotFound/BadCompilerC-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerC-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerC-stderr.txt b/Tests/RunCMake/CompilerNotFound/BadCompilerC-stderr.txt
new file mode 100644
index 0000000..c98842d
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerC-stderr.txt
@@ -0,0 +1,12 @@
+CMake Error at BadCompilerC.cmake:2 \(enable_language\):
+  The CMAKE_C_COMPILER:
+
+    no-C-compiler
+
+  is not a full path and was not found in the PATH.
+
+  Tell CMake where to find the compiler by setting either the environment
+  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
+  the compiler, or to the compiler name if it is in the PATH.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerC.cmake b/Tests/RunCMake/CompilerNotFound/BadCompilerC.cmake
new file mode 100644
index 0000000..10fe59a
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerC.cmake
@@ -0,0 +1,3 @@
+set(CMAKE_C_COMPILER "no-C-compiler")
+enable_language(C)
+message(FATAL_ERROR "This error should not be reached.")
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerCXX-result.txt b/Tests/RunCMake/CompilerNotFound/BadCompilerCXX-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerCXX-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerCXX-stderr.txt b/Tests/RunCMake/CompilerNotFound/BadCompilerCXX-stderr.txt
new file mode 100644
index 0000000..7ef4f5e
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerCXX-stderr.txt
@@ -0,0 +1,12 @@
+CMake Error at BadCompilerCXX.cmake:2 \(enable_language\):
+  The CMAKE_CXX_COMPILER:
+
+    no-CXX-compiler
+
+  is not a full path and was not found in the PATH.
+
+  Tell CMake where to find the compiler by setting either the environment
+  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
+  to the compiler, or to the compiler name if it is in the PATH.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerCXX.cmake b/Tests/RunCMake/CompilerNotFound/BadCompilerCXX.cmake
new file mode 100644
index 0000000..3b1e890
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerCXX.cmake
@@ -0,0 +1,3 @@
+set(CMAKE_CXX_COMPILER "no-CXX-compiler")
+enable_language(CXX)
+message(FATAL_ERROR "This error should not be reached.")
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX-result.txt b/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX-stderr.txt b/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX-stderr.txt
new file mode 100644
index 0000000..eecff54
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX-stderr.txt
@@ -0,0 +1,25 @@
+CMake Error at BadCompilerCandCXX.cmake:3 \(project\):
+  The CMAKE_C_COMPILER:
+
+    no-C-compiler
+
+  is not a full path and was not found in the PATH.
+
+  Tell CMake where to find the compiler by setting either the environment
+  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
+  the compiler, or to the compiler name if it is in the PATH.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
++
+CMake Error at BadCompilerCandCXX.cmake:3 \(project\):
+  The CMAKE_CXX_COMPILER:
+
+    no-CXX-compiler
+
+  is not a full path and was not found in the PATH.
+
+  Tell CMake where to find the compiler by setting either the environment
+  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
+  to the compiler, or to the compiler name if it is in the PATH.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX.cmake b/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX.cmake
new file mode 100644
index 0000000..2b6fa61
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/BadCompilerCandCXX.cmake
@@ -0,0 +1,4 @@
+set(CMAKE_C_COMPILER "no-C-compiler")
+set(CMAKE_CXX_COMPILER "no-CXX-compiler")
+project(BadCompilerCandCXXInner C CXX)
+message(FATAL_ERROR "This error should not be reached.")
diff --git a/Tests/RunCMake/CompilerNotFound/CMakeLists.txt b/Tests/RunCMake/CompilerNotFound/CMakeLists.txt
new file mode 100644
index 0000000..12cd3c7
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 2.8.4)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE-result.txt b/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE-stderr.txt b/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE-stderr.txt
new file mode 100644
index 0000000..88bb95e
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE-stderr.txt
@@ -0,0 +1,5 @@
+CMake Error at NoCompilerC-IDE.cmake:2 \(enable_language\):
+  No CMAKE_C_COMPILER could be found.
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE.cmake b/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE.cmake
new file mode 100644
index 0000000..45e1a68
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerC-IDE.cmake
@@ -0,0 +1,3 @@
+set(CMAKE_C_COMPILER_ID_ERROR_FOR_TEST "#error NoCompilerC-IDE")
+enable_language(C)
+message(FATAL_ERROR "This error should not be reached.")
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE-result.txt b/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE-stderr.txt b/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE-stderr.txt
new file mode 100644
index 0000000..4c92323
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE-stderr.txt
@@ -0,0 +1,5 @@
+CMake Error at NoCompilerCXX-IDE.cmake:2 \(enable_language\):
+  No CMAKE_CXX_COMPILER could be found.
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE.cmake b/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE.cmake
new file mode 100644
index 0000000..85025a0
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerCXX-IDE.cmake
@@ -0,0 +1,3 @@
+set(CMAKE_CXX_COMPILER_ID_ERROR_FOR_TEST "#error NoCompilerCXX-IDE")
+enable_language(CXX)
+message(FATAL_ERROR "This error should not be reached.")
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE-result.txt b/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE-stderr.txt b/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE-stderr.txt
new file mode 100644
index 0000000..21c69f5
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE-stderr.txt
@@ -0,0 +1,11 @@
+CMake Error at NoCompilerCandCXX-IDE.cmake:3 \(project\):
+  No CMAKE_C_COMPILER could be found.
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
++
+CMake Error at NoCompilerCandCXX-IDE.cmake:3 \(project\):
+  No CMAKE_CXX_COMPILER could be found.
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE.cmake b/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE.cmake
new file mode 100644
index 0000000..78256a9
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/NoCompilerCandCXX-IDE.cmake
@@ -0,0 +1,4 @@
+set(CMAKE_C_COMPILER_ID_ERROR_FOR_TEST "#error NoCompilerCandCXX-IDE")
+set(CMAKE_CXX_COMPILER_ID_ERROR_FOR_TEST "#error NoCompilerCandCXX-IDE")
+project(NoCompilerCandCXXInner C CXX)
+message(FATAL_ERROR "This error should not be reached.")
diff --git a/Tests/RunCMake/CompilerNotFound/RunCMakeTest.cmake b/Tests/RunCMake/CompilerNotFound/RunCMakeTest.cmake
new file mode 100644
index 0000000..8b84f39
--- /dev/null
+++ b/Tests/RunCMake/CompilerNotFound/RunCMakeTest.cmake
@@ -0,0 +1,11 @@
+include(RunCMake)
+
+if("${RunCMake_GENERATOR}" MATCHES "Visual Studio|Xcode")
+  run_cmake(NoCompilerC-IDE)
+  run_cmake(NoCompilerCXX-IDE)
+  run_cmake(NoCompilerCandCXX-IDE)
+else()
+  run_cmake(BadCompilerC)
+  run_cmake(BadCompilerCXX)
+  run_cmake(BadCompilerCandCXX)
+endif()