ENH: always provide CMAKE_SYSTEM_XXX() and MAKE_HOST_SYSTEM_XXX() variables,

so when cross compiling the build host platform can be tested

Alex

1 files changed, 54 insertions, 0 deletions

diff --git a/Tests/CMakeTests/ToolchainTest.cmake.in b/Tests/CMakeTests/ToolchainTest.cmake.in
index 7d59118..577894b 100644
--- a/Tests/CMakeTests/ToolchainTest.cmake.in
+++ b/Tests/CMakeTests/ToolchainTest.cmake.in
@@ -15,6 +15,45 @@ set(CMAKE_CXX_COMPILER_ID_RUN 1)
 
 set(MY_SOURCE_DIR "@CMAKE_CURRENT_SOURCE_DIR@")
 
+# at first load CMakeDetermineSystem.cmake without toolchain file
+set(CMAKE_TOOLCHAIN_FILE)
+include(CMakeDetermineSystem)
+
+# check that CMAKE_SYSTEM_XXX and CMAKE_HOST_SYSTEM_xxx are identical
+if(NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "${CMAKE_HOST_SYSTEM_NAME}")
+   message(FATAL_ERROR "CMAKE_SYSTEM_NAME and CMAKE_HOST_SYSTEM_NAME not identical: \"${CMAKE_SYSTEM_NAME}\" vs. \"${CMAKE_HOST_SYSTEM_NAME}\"")
+endif(NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "${CMAKE_HOST_SYSTEM_NAME}")
+
+if(NOT "${CMAKE_SYSTEM}" STREQUAL "${CMAKE_HOST_SYSTEM}")
+   message(FATAL_ERROR "CMAKE_SYSTEM and CMAKE_HOST_SYSTEM not identical: \"${CMAKE_SYSTEM}\" vs. \"${CMAKE_HOST_SYSTEM}\"")
+endif(NOT "${CMAKE_SYSTEM}" STREQUAL "${CMAKE_HOST_SYSTEM}")
+
+if(NOT "${CMAKE_SYSTEM_VERSION}" STREQUAL "${CMAKE_HOST_SYSTEM_VERSION}")
+   message(FATAL_ERROR "CMAKE_SYSTEM_VERSION and CMAKE_HOST_SYSTEM_VERSION not identical: \"${CMAKE_SYSTEM_VERSION}\" vs. \"${CMAKE_HOST_SYSTEM_VERSION}\"")
+endif(NOT "${CMAKE_SYSTEM_VERSION}" STREQUAL "${CMAKE_HOST_SYSTEM_VERSION}")
+
+if(NOT "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "${CMAKE_HOST_SYSTEM_PROCESSOR}")
+   message(FATAL_ERROR "CMAKE_SYSTEM_PROCESSOR and CMAKE_HOST_SYSTEM_PROCESSOR not identical: \"${CMAKE_SYSTEM_PROCESSOR}\" vs. \"${CMAKE_HOST_SYSTEM_PROCESSOR}\"")
+endif(NOT "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "${CMAKE_HOST_SYSTEM_PROCESSOR}")
+
+# save the values so we can compare them to CMAKE_HOST_SYSTEM_XXX in the toolchain case
+
+set(NATIVE_SYSTEM           "${CMAKE_SYSTEM}")
+set(NATIVE_SYSTEM_NAME      "${CMAKE_SYSTEM_NAME}")
+set(NATIVE_SYSTEM_VERSION   "${CMAKE_SYSTEM_VERSION}")
+set(NATIVE_SYSTEM_PROCESSOR "${CMAKE_SYSTEM_PROCESSOR}")
+
+# reset them so they will be detected again now
+set(CMAKE_SYSTEM)
+set(CMAKE_SYSTEM_NAME)
+set(CMAKE_SYSTEM_VERSION)
+set(CMAKE_SYSTEM_PROCESSOR)
+set(CMAKE_HOST_SYSTEM)
+set(CMAKE_HOST_SYSTEM_NAME)
+set(CMAKE_HOST_SYSTEM_VERSION)
+set(CMAKE_HOST_SYSTEM_PROCESSOR)
+
+
 ############################################################
 
 # now define a toolchain file and check that everything is 
@@ -42,6 +81,21 @@ if(NOT "${_INCLUDED_TOOLCHAIN_FILE}" STREQUAL "${MY_SOURCE_DIR}/DummyToolchain.c
    message(FATAL_ERROR "wrong toolchain file loaded: \"${_INCLUDED_TOOLCHAIN_FILE}\", expected: \"${MY_SOURCE_DIR}/DummyToolchain.cmake\"")
 endif(NOT "${_INCLUDED_TOOLCHAIN_FILE}" STREQUAL "${MY_SOURCE_DIR}/DummyToolchain.cmake")
 
+
+# check that CMAKE_HOST_SYSTEM_XXX and _SYSTEM_xxx detected above are identical
+if(NOT "${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "${NATIVE_SYSTEM_NAME}")
+   message(FATAL_ERROR "CMAKE_HOST_SYSTEM_NAME and NATIVE_SYSTEM_NAME not identical: \"${CMAKE_HOST_SYSTEM_NAME}\" vs. \"${NATIVE_SYSTEM_NAME}\"")
+endif(NOT "${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "${NATIVE_SYSTEM_NAME}")
+if(NOT "${CMAKE_HOST_SYSTEM}" STREQUAL "${NATIVE_SYSTEM}")
+   message(FATAL_ERROR "CMAKE_HOST_SYSTEM and NATIVE_SYSTEM not identical: \"${CMAKE_HOST_SYSTEM}\" vs. \"${NATIVE_SYSTEM}\"")
+endif(NOT "${CMAKE_HOST_SYSTEM}" STREQUAL "${NATIVE_SYSTEM}")
+if(NOT "${CMAKE_HOST_SYSTEM_VERSION}" STREQUAL "${NATIVE_SYSTEM_VERSION}")
+   message(FATAL_ERROR "CMAKE_HOST_SYSTEM_VERSION and NATIVE_SYSTEM_VERSION not identical: \"${CMAKE_HOST_SYSTEM_VERSION}\" vs. \"${NATIVE_SYSTEM_VERSION}\"")
+endif(NOT "${CMAKE_HOST_SYSTEM_VERSION}" STREQUAL "${NATIVE_SYSTEM_VERSION}")
+if(NOT "${CMAKE_HOST_SYSTEM_PROCESSOR}" STREQUAL "${NATIVE_SYSTEM_PROCESSOR}")
+   message(FATAL_ERROR "CMAKE_HOST_SYSTEM_PROCESSOR and NATIVE_SYSTEM_PROCESSOR not identical: \"${CMAKE_HOST_SYSTEM_PROCESSOR}\" vs. \"${NATIVE_SYSTEM_PROCESSOR}\"")
+endif(NOT "${CMAKE_HOST_SYSTEM_PROCESSOR}" STREQUAL "${NATIVE_SYSTEM_PROCESSOR}")
+
 #############################################################
 
 # check the results from DetermineCCompiler