From f76c20da6395c0830ac0de667c105b0b29f84c7a Mon Sep 17 00:00:00 2001
From: Fred Baksik <fdk17@ftml.net>
Date: Mon, 20 Jul 2020 09:45:32 -0400
Subject: Toolchain: Test compiler initial settings

---
 Tests/RunCMake/CMakeLists.txt                     |  1 +
 Tests/RunCMake/CompilerArgs/C.cmake               |  3 ++
 Tests/RunCMake/CompilerArgs/CMakeLists.txt        |  3 ++
 Tests/RunCMake/CompilerArgs/CXX.cmake             |  3 ++
 Tests/RunCMake/CompilerArgs/FindCCompiler.cmake   |  2 +
 Tests/RunCMake/CompilerArgs/FindCXXCompiler.cmake |  2 +
 Tests/RunCMake/CompilerArgs/RunCMakeTest.cmake    | 58 +++++++++++++++++++++++
 Tests/RunCMake/CompilerArgs/main.c                | 10 ++++
 Tests/RunCMake/CompilerArgs/main.cxx              | 10 ++++
 Tests/RunCMake/CompilerArgs/toolchain.cmake.in    |  1 +
 10 files changed, 93 insertions(+)
 create mode 100644 Tests/RunCMake/CompilerArgs/C.cmake
 create mode 100644 Tests/RunCMake/CompilerArgs/CMakeLists.txt
 create mode 100644 Tests/RunCMake/CompilerArgs/CXX.cmake
 create mode 100644 Tests/RunCMake/CompilerArgs/FindCCompiler.cmake
 create mode 100644 Tests/RunCMake/CompilerArgs/FindCXXCompiler.cmake
 create mode 100644 Tests/RunCMake/CompilerArgs/RunCMakeTest.cmake
 create mode 100644 Tests/RunCMake/CompilerArgs/main.c
 create mode 100644 Tests/RunCMake/CompilerArgs/main.cxx
 create mode 100644 Tests/RunCMake/CompilerArgs/toolchain.cmake.in

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index 36b016f..5c35040 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -624,6 +624,7 @@ if("${CMAKE_GENERATOR}" MATCHES "Make|Ninja")
   set_property(TEST RunCMake.CompilerLauncher APPEND
     PROPERTY LABELS "CUDA")
   add_RunCMake_test(ctest_labels_for_subprojects)
+  add_RunCMake_test(CompilerArgs)
 endif()
 
 set(cpack_tests
diff --git a/Tests/RunCMake/CompilerArgs/C.cmake b/Tests/RunCMake/CompilerArgs/C.cmake
new file mode 100644
index 0000000..96b004b
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/C.cmake
@@ -0,0 +1,3 @@
+enable_language(C)
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+add_executable(main main.c)
diff --git a/Tests/RunCMake/CompilerArgs/CMakeLists.txt b/Tests/RunCMake/CompilerArgs/CMakeLists.txt
new file mode 100644
index 0000000..18dfd26
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.2)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/CompilerArgs/CXX.cmake b/Tests/RunCMake/CompilerArgs/CXX.cmake
new file mode 100644
index 0000000..3d2ee00
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/CXX.cmake
@@ -0,0 +1,3 @@
+enable_language(CXX)
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+add_executable(main main.cxx)
diff --git a/Tests/RunCMake/CompilerArgs/FindCCompiler.cmake b/Tests/RunCMake/CompilerArgs/FindCCompiler.cmake
new file mode 100644
index 0000000..aeaaf7f
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/FindCCompiler.cmake
@@ -0,0 +1,2 @@
+enable_language(C)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/C_comp.cmake" "set(temp_CMAKE_C_COMPILER \"${CMAKE_C_COMPILER}\")\n")
diff --git a/Tests/RunCMake/CompilerArgs/FindCXXCompiler.cmake b/Tests/RunCMake/CompilerArgs/FindCXXCompiler.cmake
new file mode 100644
index 0000000..663ac83
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/FindCXXCompiler.cmake
@@ -0,0 +1,2 @@
+enable_language(CXX)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/CXX_comp.cmake" "set(temp_CMAKE_CXX_COMPILER \"${CMAKE_CXX_COMPILER}\")\n")
diff --git a/Tests/RunCMake/CompilerArgs/RunCMakeTest.cmake b/Tests/RunCMake/CompilerArgs/RunCMakeTest.cmake
new file mode 100644
index 0000000..9e5a18a
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/RunCMakeTest.cmake
@@ -0,0 +1,58 @@
+include(RunCMake)
+
+function(find_compiler lang)
+  # Detect the compiler in use in the current environment.
+  run_cmake(Find${lang}Compiler)
+  # Use the detected compiler
+  include(${RunCMake_BINARY_DIR}/Find${lang}Compiler-build/${lang}_comp.cmake)
+  if(NOT temp_CMAKE_${lang}_COMPILER)
+    message(FATAL_ERROR "FindCompiler provided no compiler!")
+  endif()
+  # Create a toolchain file
+  set(__test_compiler_var CMAKE_${lang}_COMPILER)
+  set(__test_compiler "${temp_CMAKE_${lang}_COMPILER}")
+  configure_file(${RunCMake_SOURCE_DIR}/toolchain.cmake.in
+      ${RunCMake_BINARY_DIR}/Find${lang}Compiler-build/toolchain_${lang}_comp.cmake @ONLY)
+endfunction()
+
+function(run_compiler_env lang)
+  # Use the correct compiler
+  include(${RunCMake_BINARY_DIR}/Find${lang}Compiler-build/${lang}_comp.cmake)
+
+  # Use a single build tree for tests without cleaning.
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${lang}-env-build)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+
+  # Set the compiler
+  if(lang STREQUAL "C")
+    set(ENV{CC} "'${temp_CMAKE_${lang}_COMPILER}' -DFOO1 -DFOO2")
+  else()
+    set(ENV{${lang}} "'${temp_CMAKE_${lang}_COMPILER}' -DFOO1 -DFOO2")
+  endif()
+
+  run_cmake(${lang})
+  run_cmake_command(${lang}-Build ${CMAKE_COMMAND} --build . ${verbose_args})
+endfunction()
+
+function(run_compiler_tc lang)
+  # Use a single build tree for tests without cleaning.
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${lang}-tc-build)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+
+  set(RunCMake_TEST_OPTIONS
+      -DCMAKE_TOOLCHAIN_FILE=${RunCMake_BINARY_DIR}/Find${lang}Compiler-build/toolchain_${lang}_comp.cmake)
+  run_cmake(${lang})
+  run_cmake_command(${lang}-Build ${CMAKE_COMMAND} --build . ${verbose_args})
+endfunction()
+
+set(langs C CXX)
+
+foreach(lang ${langs})
+  find_compiler(${lang})
+  run_compiler_env(${lang})
+  run_compiler_tc(${lang})
+endforeach()
diff --git a/Tests/RunCMake/CompilerArgs/main.c b/Tests/RunCMake/CompilerArgs/main.c
new file mode 100644
index 0000000..b526135
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/main.c
@@ -0,0 +1,10 @@
+#ifndef FOO1
+#  error Missing FOO1
+#endif
+#ifndef FOO2
+#  error Missing FOO2
+#endif
+int main(void)
+{
+  return 0;
+}
diff --git a/Tests/RunCMake/CompilerArgs/main.cxx b/Tests/RunCMake/CompilerArgs/main.cxx
new file mode 100644
index 0000000..db90e93
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/main.cxx
@@ -0,0 +1,10 @@
+#ifndef FOO1
+#  error Missing FOO1
+#endif
+#ifndef FOO2
+#  error Missing FOO2
+#endif
+int main()
+{
+  return 0;
+}
diff --git a/Tests/RunCMake/CompilerArgs/toolchain.cmake.in b/Tests/RunCMake/CompilerArgs/toolchain.cmake.in
new file mode 100644
index 0000000..ff77639
--- /dev/null
+++ b/Tests/RunCMake/CompilerArgs/toolchain.cmake.in
@@ -0,0 +1 @@
+set(@__test_compiler_var@ "@__test_compiler@" -DFOO1 -DFOO2)
-- 
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