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, 29 insertions, 0 deletions

diff --git a/Tests/FortranC/Flags.cmake.in b/Tests/FortranC/Flags.cmake.in
new file mode 100644
index 0000000..8bf0c5c
--- /dev/null
+++ b/Tests/FortranC/Flags.cmake.in
@@ -0,0 +1,29 @@
+set(src "@CMAKE_CURRENT_SOURCE_DIR@/FortranC")
+set(bld "@CMAKE_CURRENT_BINARY_DIR@/FortranC/Flags")
+
+# Create wrapper scripts for the compilers that check for expected
+# flags, remove them, and invoke the real compiler.
+set(ID "CC")
+set(COMMAND "@CMAKE_C_COMPILER@")
+configure_file("${src}/test_opt.sh.in" "${bld}/cc.sh" @ONLY)
+set(ID "FC")
+set(COMMAND "@CMAKE_Fortran_COMPILER@")
+configure_file("${src}/test_opt.sh.in" "${bld}/fc.sh" @ONLY)
+set(ID)
+set(COMMAND)
+
+set(ENV{CFLAGS})
+set(ENV{FFLAGS})
+
+execute_process(
+  WORKING_DIRECTORY "${bld}"
+  COMMAND ${CMAKE_COMMAND} "${src}" -G "@CMAKE_TEST_GENERATOR@"
+                           "-DFortranC_TEST_FLAGS=1"
+                           "-DCMAKE_C_COMPILER=${bld}/cc.sh"
+                           "-DCMAKE_Fortran_COMPILER=${bld}/fc.sh"
+  RESULT_VARIABLE result
+  )
+
+if(NOT "${result}" STREQUAL "0")
+  message(FATAL_ERROR "Configuration failed: ${result}")
+endif()