Test FortranCInterface flag propagation

We create test FortranC.Flags to try passing per-language flags from a
project into its FortranCInterface detect/verify checks.  We wrap the
compilers with scripts that enforce presence of expected flags.

1 files changed, 25 insertions, 0 deletions

diff --git a/Tests/FortranC/CMakeLists.txt b/Tests/FortranC/CMakeLists.txt
new file mode 100644
index 0000000..e4e8ca1
--- /dev/null
+++ b/Tests/FortranC/CMakeLists.txt
@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 2.8)
+project(FortranC C Fortran)
+
+# Skip this test for compilers not known to be compatible.
+if(NOT ("${CMAKE_C_COMPILER_ID}" STREQUAL "${CMAKE_Fortran_COMPILER_ID}" OR
+        "${CMAKE_C_COMPILER_ID}-${CMAKE_Fortran_COMPILER_ID}" MATCHES "^(MSVC-Intel)$"))
+  message(STATUS "${CMAKE_C_COMPILER_ID} C and ${CMAKE_Fortran_COMPILER_ID} Fortran not known to be compatible!")
+  return()
+endif()
+
+# Wipe out all FortranCInterface information to ensure it re-runs.
+file(REMOVE_RECURSE ${CMAKE_BINARY_DIR}/CMakeFiles/FortranCInterface)
+
+if(FortranC_TEST_FLAGS)
+  # Test whether FortranCInterface checks see C flags.
+  set(ENV{TEST_OPT_CC} "--test-opt-cc")
+  set(CMAKE_C_FLAGS "$ENV{TEST_OPT_CC}")
+
+  # Test whether FortranCInterface checks see Fortran flags.
+  set(ENV{TEST_OPT_FC} "--test-opt-fc")
+  set(CMAKE_Fortran_FLAGS "$ENV{TEST_OPT_FC}")
+endif()
+
+include(FortranCInterface)
+FortranCInterface_VERIFY()