mirror of
https://github.com/golang/go
synced 2024-11-17 19:04:47 -07:00
e45aebd6dd
When using -buildmode=c-archive or c-shared, and when installing packages that use cgo, and when those packages export some functions via //export comments, then for each such package, install a pkg.h header file that declares the functions. This permits C code to #include the header when calling the Go functions. This is a little awkward to use when there are multiple packages that export functions, as you have to "go install" your c-archive/c-shared object and then pull it out of the package directory. When compiling your C code you have to -I pkg/$GOOS_$GOARCH. I haven't thought of any more convenient approach. It's simpler when only the main package has exported functions. When using c-shared you currently have to use a _shared suffix in the -I option; it would be nice to fix that somehow. Change-Id: I5d8cf08914b7d3c2b194120c77791d2732ffd26e Reviewed-on: https://go-review.googlesource.com/9798 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
37 lines
974 B
C
37 lines
974 B
C
// Copyright 2015 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
|
|
#include "p.h"
|
|
#include "libgo.h"
|
|
|
|
// Tests libgo.so to export the following functions.
|
|
// int8_t DidInitRun();
|
|
// int8_t DidMainRun();
|
|
// int32_t FromPkg();
|
|
int main(void) {
|
|
int8_t ran_init = DidInitRun();
|
|
if (!ran_init) {
|
|
fprintf(stderr, "ERROR: DidInitRun returned unexpected results: %d\n",
|
|
ran_init);
|
|
return 1;
|
|
}
|
|
int8_t ran_main = DidMainRun();
|
|
if (ran_main) {
|
|
fprintf(stderr, "ERROR: DidMainRun returned unexpected results: %d\n",
|
|
ran_main);
|
|
return 1;
|
|
}
|
|
int32_t from_pkg = FromPkg();
|
|
if (from_pkg != 1024) {
|
|
fprintf(stderr, "ERROR: FromPkg=%d, want %d\n", from_pkg, 1024);
|
|
return 1;
|
|
}
|
|
// test.bash looks for "PASS" to ensure this program has reached the end.
|
|
printf("PASS\n");
|
|
return 0;
|
|
}
|