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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>
115 lines
2.8 KiB
Bash
Executable File
115 lines
2.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2015 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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# For testing Android, this script requires adb to push and run compiled
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# binaries on a target device.
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set -e
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if [ ! -f src/libgo/libgo.go ]; then
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cwd=$(pwd)
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echo 'misc/cgo/testcshared/test.bash is running in $cwd' 1>&2
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exit 1
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fi
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goos=$(go env GOOS)
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# Temporary directory on the android device.
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androidpath=/data/local/tmp/testcshared-$$
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function cleanup() {
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rm -rf libgo.so libgo2.so libgo.h testp testp2 testp3 pkg
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rm -rf $(go env GOROOT)/pkg/$(go env GOOS)_$(go env GOARCH)_testcshared_shared
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if [ "$(go env GOOS)" == "android" ]; then
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adb shell rm -rf $androidpath
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fi
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}
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trap cleanup EXIT
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if [ "$goos" == "android" ]; then
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adb shell mkdir -p "$androidpath"
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fi
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function run() {
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case "$goos" in
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"android")
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local args=$@
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for ((i=0; i < ${#args}; i++)); do
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args[$i]=${args[$i]//.\//${androidpath}\/}
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args[$i]=${args[$i]//=./=${androidpath}}
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done
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output=$(adb shell ${args} | tr -d '\r')
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case $output in
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*PASS) echo "PASS";;
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*) echo "$output";;
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esac
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;;
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*)
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echo $(env $@)
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;;
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esac
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}
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function binpush() {
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bin=${1}
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if [ "$goos" == "android" ]; then
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adb push "$bin" "${androidpath}/${bin}" 2>/dev/null
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fi
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}
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rm -rf pkg
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suffix="-installsuffix testcshared"
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# Create the header files.
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GOPATH=$(pwd) go install -buildmode=c-shared $suffix libgo
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GOPATH=$(pwd) go build -buildmode=c-shared $suffix -o libgo.so src/libgo/libgo.go
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binpush libgo.so
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# test0: exported symbols in shared lib are accessible.
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# TODO(iant): using _shared here shouldn't really be necessary.
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$(go env CC) $(go env GOGCCFLAGS) -I pkg/$(go env GOOS)_$(go env GOARCH)_testcshared_shared -o testp main0.c libgo.so
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binpush testp
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output=$(run LD_LIBRARY_PATH=. ./testp)
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if [ "$output" != "PASS" ]; then
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echo "FAIL test0 got ${output}"
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exit 1
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fi
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# test1: .so can be dynamically loaded and exported symbols are accessible.
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$(go env CC) $(go env GOGCCFLAGS) -o testp main1.c -ldl
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binpush testp
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output=$(run ./testp ./libgo.so)
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if [ "$output" != "PASS" ]; then
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echo "FAIL test1 got ${output}"
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exit 1
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fi
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# test2: tests libgo2.so which does not export any functions.
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GOPATH=$(pwd) go build -buildmode=c-shared $suffix -o libgo2.so src/libgo2/libgo2.go
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binpush libgo2.so
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$(go env CC) $(go env GOGCCFLAGS) -o testp2 main2.c -Wl,--no-as-needed libgo2.so
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binpush testp2
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output=$(run LD_LIBRARY_PATH=. ./testp2)
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if [ "$output" != "PASS" ]; then
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echo "FAIL test2 got ${output}"
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exit 1
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fi
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# test3: tests main.main is exported on android.
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if [ "$goos" == "android" ]; then
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$(go env CC) $(go env GOGCCFLAGS) -o testp3 main3.c -ldl
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binpush testp3
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output=$(run ./testp ./libgo.so)
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if [ "$output" != "PASS" ]; then
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echo "FAIL test3 got ${output}"
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exit 1
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fi
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fi
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echo "ok"
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