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1e9a7550a8
Currently, the entry-point to this test is a Bash script that smoke tests the FORTRAN compiler and then runs a FORTRAN-containing Go test. This CL rearranges things so a pure Go Go test smoke tests the FORTRAN compiler and then runs a non-test FORTRAN-containing Go binary. While we're here, we fix a discrepancy when the host is GOARCH=amd64, but the target is GOARCH=386. Previously, we would pick the wrong libgfortran path because we didn't account for the cross-compilation, causing the link to fail. Except for some reason this was ignored and the test nevertheless "passed". In the new test we're a little more strict, so this build failure will cause the test to fail, so we add a little logic to account for cross-compilation with the host toolchain. For #37486. Change-Id: Ie6f70066885d6fbb4e1b5a2b1e13b85dee5b359b Reviewed-on: https://go-review.googlesource.com/c/go/+/443069 Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Bryan Mills <bcmills@google.com> Run-TryBot: Austin Clements <austin@google.com>
82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package fortran
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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)
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func TestFortran(t *testing.T) {
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// Find the FORTRAN compiler.
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fc := os.Getenv("FC")
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if fc == "" {
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fc, _ = exec.LookPath("gfortran")
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}
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if fc == "" {
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t.Skip("fortran compiler not found (try setting $FC)")
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}
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var fcExtra []string
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if strings.Contains(fc, "gfortran") {
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// TODO: This duplicates but also diverges from logic from cmd/go
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// itself. For example, cmd/go merely adds -lgfortran without the extra
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// library path work. If this is what's necessary to run gfortran, we
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// should reconcile the logic here and in cmd/go.. Maybe this should
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// become a cmd/go script test to share that logic.
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// Add -m32 if we're targeting 386, in case this is a cross-compile.
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if runtime.GOARCH == "386" {
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fcExtra = append(fcExtra, "-m32")
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}
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// Find libgfortran. If the FORTRAN compiler isn't bundled
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// with the C linker, this may be in a path the C linker can't
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// find on its own. (See #14544)
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libExt := "so"
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switch runtime.GOOS {
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case "darwin":
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libExt = "dylib"
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case "aix":
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libExt = "a"
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}
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libPath, err := exec.Command(fc, append([]string{"-print-file-name=libgfortran." + libExt}, fcExtra...)...).CombinedOutput()
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if err != nil {
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t.Errorf("error invoking %s: %s", fc, err)
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}
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libDir := filepath.Dir(string(libPath))
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cgoLDFlags := os.Getenv("CGO_LDFLAGS")
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cgoLDFlags += " -L " + libDir
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if runtime.GOOS != "aix" {
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cgoLDFlags += " -Wl,-rpath," + libDir
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}
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t.Logf("CGO_LDFLAGS=%s", cgoLDFlags)
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os.Setenv("CGO_LDFLAGS", cgoLDFlags)
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}
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// Do a test build that doesn't involve Go FORTRAN support.
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fcArgs := append([]string{"helloworld/helloworld.f90", "-o", "/dev/null"}, fcExtra...)
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t.Logf("%s %s", fc, fcArgs)
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if err := exec.Command(fc, fcArgs...).Run(); err != nil {
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t.Skipf("skipping Fortran test: could not build helloworld.f90 with %s: %s", fc, err)
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}
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// Finally, run the actual test.
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t.Log("go", "run", "./testdata/testprog")
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out, err := exec.Command("go", "run", "./testdata/testprog").CombinedOutput()
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if err == nil && string(out) != "ok\n" {
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err = fmt.Errorf("expected ok")
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}
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if err != nil {
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t.Errorf("%s\nOutput:\n%s", err, string(out))
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}
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}
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