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cgo: implement #cgo CFLAGS
This implementation is still very limited but provides a base to build upon. Limitations: * CGO_CFLAGS etc is not taken into account. * These CFLAGS are not used in C files compiled with the package. * Other flags (CPPFLAGS, LDFAGS, ...) are not yet implemented.
This commit is contained in:
Ayke van Laethem
committed by
Ron Evans
Ron Evans
parent
6a1bb134f9
commit
10e1420237
@@ -0,0 +1,260 @@
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// Copyright 2018 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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// This file has been copied from the Go 1.13 release tree.
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package cgo
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import (
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"os"
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"testing"
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)
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var goodCompilerFlags = [][]string{
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{"-DFOO"},
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{"-Dfoo=bar"},
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{"-F/Qt"},
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{"-I/"},
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{"-I/etc/passwd"},
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{"-I."},
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{"-O"},
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{"-O2"},
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{"-Osmall"},
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{"-W"},
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{"-Wall"},
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{"-fobjc-arc"},
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{"-fno-objc-arc"},
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{"-fomit-frame-pointer"},
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{"-fno-omit-frame-pointer"},
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{"-fpic"},
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{"-fno-pic"},
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{"-fPIC"},
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{"-fno-PIC"},
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{"-fpie"},
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{"-fno-pie"},
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{"-fPIE"},
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{"-fno-PIE"},
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{"-fsplit-stack"},
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{"-fno-split-stack"},
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{"-fstack-xxx"},
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{"-fno-stack-xxx"},
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{"-fsanitize=hands"},
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{"-g"},
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{"-ggdb"},
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{"-march=souza"},
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{"-mcpu=123"},
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{"-mfpu=123"},
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{"-mtune=happybirthday"},
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{"-mstack-overflow"},
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{"-mno-stack-overflow"},
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{"-mmacosx-version"},
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{"-mnop-fun-dllimport"},
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{"-pthread"},
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{"-std=c99"},
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{"-xc"},
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{"-D", "FOO"},
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{"-D", "foo=bar"},
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{"-I", "."},
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{"-I", "/etc/passwd"},
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{"-I", "世界"},
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{"-framework", "Chocolate"},
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{"-x", "c"},
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{"-v"},
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}
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var badCompilerFlags = [][]string{
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{"-D@X"},
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{"-D-X"},
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{"-F@dir"},
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{"-F-dir"},
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{"-I@dir"},
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{"-I-dir"},
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{"-O@1"},
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{"-Wa,-foo"},
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{"-W@foo"},
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{"-g@gdb"},
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{"-g-gdb"},
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{"-march=@dawn"},
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{"-march=-dawn"},
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{"-std=@c99"},
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{"-std=-c99"},
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{"-x@c"},
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{"-x-c"},
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{"-D", "@foo"},
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{"-D", "-foo"},
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{"-I", "@foo"},
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{"-I", "-foo"},
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{"-framework", "-Caffeine"},
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{"-framework", "@Home"},
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{"-x", "--c"},
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{"-x", "@obj"},
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}
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func TestCheckCompilerFlags(t *testing.T) {
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for _, f := range goodCompilerFlags {
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if err := checkCompilerFlags("test", f); err != nil {
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t.Errorf("unexpected error for %q: %v", f, err)
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}
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}
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for _, f := range badCompilerFlags {
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if err := checkCompilerFlags("test", f); err == nil {
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t.Errorf("missing error for %q", f)
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}
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}
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}
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var goodLinkerFlags = [][]string{
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{"-Fbar"},
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{"-lbar"},
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{"-Lbar"},
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{"-fpic"},
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{"-fno-pic"},
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{"-fPIC"},
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{"-fno-PIC"},
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{"-fpie"},
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{"-fno-pie"},
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{"-fPIE"},
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{"-fno-PIE"},
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{"-fsanitize=hands"},
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{"-g"},
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{"-ggdb"},
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{"-march=souza"},
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{"-mcpu=123"},
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{"-mfpu=123"},
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{"-mtune=happybirthday"},
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{"-pic"},
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{"-pthread"},
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{"-Wl,-rpath,foo"},
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{"-Wl,-rpath,$ORIGIN/foo"},
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{"-Wl,-R", "/foo"},
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{"-Wl,-R", "foo"},
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{"-Wl,-R,foo"},
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{"-Wl,--just-symbols=foo"},
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{"-Wl,--just-symbols,foo"},
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{"-Wl,--warn-error"},
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{"-Wl,--no-warn-error"},
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{"foo.so"},
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{"_世界.dll"},
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{"./x.o"},
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{"libcgosotest.dylib"},
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{"-F", "framework"},
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{"-l", "."},
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{"-l", "/etc/passwd"},
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{"-l", "世界"},
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{"-L", "framework"},
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{"-framework", "Chocolate"},
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{"-v"},
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{"-Wl,-framework", "-Wl,Chocolate"},
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{"-Wl,-framework,Chocolate"},
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{"-Wl,-unresolved-symbols=ignore-all"},
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}
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var badLinkerFlags = [][]string{
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{"-DFOO"},
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{"-Dfoo=bar"},
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{"-W"},
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{"-Wall"},
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{"-fobjc-arc"},
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{"-fno-objc-arc"},
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{"-fomit-frame-pointer"},
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{"-fno-omit-frame-pointer"},
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{"-fsplit-stack"},
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{"-fno-split-stack"},
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{"-fstack-xxx"},
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{"-fno-stack-xxx"},
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{"-mstack-overflow"},
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{"-mno-stack-overflow"},
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{"-mnop-fun-dllimport"},
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{"-std=c99"},
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{"-xc"},
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{"-D", "FOO"},
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{"-D", "foo=bar"},
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{"-I", "FOO"},
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{"-L", "@foo"},
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{"-L", "-foo"},
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{"-x", "c"},
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{"-D@X"},
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{"-D-X"},
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{"-I@dir"},
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{"-I-dir"},
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{"-O@1"},
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{"-Wa,-foo"},
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{"-W@foo"},
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{"-g@gdb"},
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{"-g-gdb"},
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{"-march=@dawn"},
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{"-march=-dawn"},
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{"-std=@c99"},
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{"-std=-c99"},
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{"-x@c"},
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{"-x-c"},
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{"-D", "@foo"},
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{"-D", "-foo"},
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{"-I", "@foo"},
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{"-I", "-foo"},
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{"-l", "@foo"},
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{"-l", "-foo"},
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{"-framework", "-Caffeine"},
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{"-framework", "@Home"},
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{"-Wl,-framework,-Caffeine"},
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{"-Wl,-framework", "-Wl,@Home"},
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{"-Wl,-framework", "@Home"},
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{"-Wl,-framework,Chocolate,@Home"},
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{"-x", "--c"},
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{"-x", "@obj"},
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{"-Wl,-rpath,@foo"},
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{"-Wl,-R,foo,bar"},
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{"-Wl,-R,@foo"},
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{"-Wl,--just-symbols,@foo"},
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{"../x.o"},
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}
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func TestCheckLinkerFlags(t *testing.T) {
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for _, f := range goodLinkerFlags {
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if err := checkLinkerFlags("test", f); err != nil {
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t.Errorf("unexpected error for %q: %v", f, err)
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}
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}
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for _, f := range badLinkerFlags {
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if err := checkLinkerFlags("test", f); err == nil {
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t.Errorf("missing error for %q", f)
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}
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}
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}
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func TestCheckFlagAllowDisallow(t *testing.T) {
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if err := checkCompilerFlags("TEST", []string{"-disallow"}); err == nil {
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t.Fatalf("missing error for -disallow")
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}
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os.Setenv("CGO_TEST_ALLOW", "-disallo")
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if err := checkCompilerFlags("TEST", []string{"-disallow"}); err == nil {
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t.Fatalf("missing error for -disallow with CGO_TEST_ALLOW=-disallo")
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}
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os.Setenv("CGO_TEST_ALLOW", "-disallow")
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if err := checkCompilerFlags("TEST", []string{"-disallow"}); err != nil {
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t.Fatalf("unexpected error for -disallow with CGO_TEST_ALLOW=-disallow: %v", err)
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}
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os.Unsetenv("CGO_TEST_ALLOW")
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if err := checkCompilerFlags("TEST", []string{"-Wall"}); err != nil {
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t.Fatalf("unexpected error for -Wall: %v", err)
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}
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os.Setenv("CGO_TEST_DISALLOW", "-Wall")
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if err := checkCompilerFlags("TEST", []string{"-Wall"}); err == nil {
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t.Fatalf("missing error for -Wall with CGO_TEST_DISALLOW=-Wall")
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}
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os.Setenv("CGO_TEST_ALLOW", "-Wall") // disallow wins
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if err := checkCompilerFlags("TEST", []string{"-Wall"}); err == nil {
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t.Fatalf("missing error for -Wall with CGO_TEST_DISALLOW=-Wall and CGO_TEST_ALLOW=-Wall")
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}
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os.Setenv("CGO_TEST_ALLOW", "-fplugin.*")
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os.Setenv("CGO_TEST_DISALLOW", "-fplugin=lint.so")
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if err := checkCompilerFlags("TEST", []string{"-fplugin=faster.so"}); err != nil {
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t.Fatalf("unexpected error for -fplugin=faster.so: %v", err)
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}
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if err := checkCompilerFlags("TEST", []string{"-fplugin=lint.so"}); err == nil {
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t.Fatalf("missing error for -fplugin=lint.so: %v", err)
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}
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}
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