# This whole file adapted from libgomp.fortran/fortran.exp.

load_lib libgomp-dg.exp
load_gcc_lib gcc-dg.exp
load_gcc_lib gfortran-dg.exp

global shlib_ext
global ALWAYS_CFLAGS

set shlib_ext [get_shlib_extension]
set lang_library_path	"../libgfortran/.libs"
set lang_link_flags	"-lgfortran -foffload=-lgfortran"
if [info exists lang_include_flags] then {
    unset lang_include_flags
}
set lang_test_file_found 0
set quadmath_library_path "../libquadmath/.libs"


# Initialize dg.
dg-init

# Turn on OpenACC.
lappend ALWAYS_CFLAGS "additional_flags=-fopenacc"

if { $blddir != "" } {
    set lang_source_re {^.*\.[fF](|90|95|03|08)$}
    set lang_include_flags "-fintrinsic-modules-path=${blddir}"
    # Look for a static libgfortran first.
    if [file exists "${blddir}/${lang_library_path}/libgfortran.a"] {
        set lang_test_file "${lang_library_path}/libgfortran.a"
        set lang_test_file_found 1
	# We may have a shared only build, so look for a shared libgfortran.
    } elseif [file exists "${blddir}/${lang_library_path}/libgfortran.${shlib_ext}"] {
        set lang_test_file "${lang_library_path}/libgfortran.${shlib_ext}"
        set lang_test_file_found 1
    } else {
        puts "No libgfortran library found, will not execute fortran tests"
    }
} elseif [info exists GFORTRAN_UNDER_TEST] {
    set lang_test_file_found 1
    # Needs to exist for libgomp.exp.
    set lang_test_file ""
} else {
    puts "GFORTRAN_UNDER_TEST not defined, will not execute fortran tests"
}

if { $lang_test_file_found } {
    # Gather a list of all tests.
    set tests [lsort [find $srcdir/$subdir *.\[fF\]{,90,95,03,08}]]

    if { $blddir != "" } {
	if { [file exists "${blddir}/${quadmath_library_path}/libquadmath.a"]
	     || [file exists "${blddir}/${quadmath_library_path}/libquadmath.${shlib_ext}"] } {
	    lappend ALWAYS_CFLAGS "ldflags=-L${blddir}/${quadmath_library_path}/"
	    # Allow for spec subsitution.
	    lappend ALWAYS_CFLAGS "additional_flags=-B${blddir}/${quadmath_library_path}/"
	    set ld_library_path "$always_ld_library_path:${blddir}/${lang_library_path}:${blddir}/${quadmath_library_path}"
	    append lang_link_flags " -lquadmath"
	} else {
	    set ld_library_path "$always_ld_library_path:${blddir}/${lang_library_path}"
	}
    } else {
        set ld_library_path "$always_ld_library_path"
        if { [check_no_compiler_messages has_libquadmath executable {
                 int main() {return 0;}
              } "-lgfortran -lquadmath"] } then {
            append lang_link_flags " -lquadmath"
        }
    }
    append ld_library_path [gcc-set-multilib-library-path $GCC_UNDER_TEST]
    set_ld_library_path_env_vars

    # Test with all available offload targets, and with offloading disabled.
    foreach offload_target [concat [split $offload_targets ","] "disable"] {
	global openacc_device_type
	set openacc_device_type [offload_target_to_openacc_device_type $offload_target]
	set tagopt "-DACC_DEVICE_TYPE_$openacc_device_type=1"

	switch $openacc_device_type {
	    "" {
		unsupported "$subdir $offload_target offloading"
		continue
	    }
	    host {
		set acc_mem_shared 1
	    }
	    nvidia {
		if { ![check_effective_target_openacc_nvidia_accel_present] } {
		    # Don't bother; execution testing is going to FAIL.
		    untested "$subdir $offload_target offloading: supported, but hardware not accessible"
		    continue
		}

		set acc_mem_shared 0
	    }
	    radeon {
		if { ![check_effective_target_openacc_radeon_accel_present] } {
		    # Don't bother; execution testing is going to FAIL.
		    untested "$subdir $offload_target offloading: supported, but hardware not accessible"
		    continue
		}

		set acc_mem_shared 0
	    }
	    default {
		error "Unknown OpenACC device type: $openacc_device_type (offload target: $offload_target)"
	    }
	}
	set tagopt "$tagopt -DACC_MEM_SHARED=$acc_mem_shared"

	# To avoid compilation overhead, and to keep simple '-foffload=[...]'
	# handling in test cases, by default only build for the offload target
	# that we're actually going to test.
	set tagopt "$tagopt -foffload=$offload_target"
	# Force usage of the corresponding OpenACC device type.
	setenv ACC_DEVICE_TYPE $openacc_device_type

	# For Fortran we're doing torture testing, as Fortran has far more tests
	# with arrays etc. that testing just -O0 or -O2 is insufficient, that is
	# typically not the case for C/C++.
	gfortran-dg-runtest $tests "$tagopt" ""
    }
    unset offload_target
}

# All done.
dg-finish