Make run test-suite from more configurations

Author: Meinersbur

flang-rt/test/Driver/ctofortran.f90

@@ -1,7 +1,7 @@
 ! UNSUPPORTED: system-windows
 
 ! RUN: split-file %s %t
-! RUN: %clang -c %t/cfile.c -o %t/cfile.o
+! RUN: %clang -I"%include/flang" -c %t/cfile.c -o %t/cfile.o
 ! RUN: %flang -L"%libdir" %deplibs %t/ffile.f90 %t/cfile.o -o %t/ctofortran
 ! RUN: env LD_LIBRARY_PATH="$LD_LIBRARY_PATH:%libdir" %t/ctofortran | FileCheck %s
 

flang-rt/test/lit.cfg.py

@@ -68,7 +68,7 @@ def shjoin(args, sep=' '):
 tools = [
     ToolSubst(
         "%flang",
-        command=FindTool("flang"),
+        command=config.flang,
         extra_args=isysroot_flag,
         unresolved="fatal",
     ),

flang-rt/test/lit.site.cfg.py.in

@@ -9,6 +9,7 @@ config.flang_rt_binary_test_dir = os.path.dirname(__file__)
 config.flang_rt_build_lib_dir = "@FLANG_RT_BUILD_LIB_DIR@"
 config.flang_rt_experimental_offload_support = "@FLANG_RT_EXPERIMENTAL_OFFLOAD_SUPPORT@"
 config.cc = "@CMAKE_C_COMPILER@"
+config.flang = "@CMAKE_Fortran_COMPILER@"
 config.osx_sysroot = path(r"@CMAKE_OSX_SYSROOT@")
 
 import lit.llvm