golang cross-compiler on windows to...

Golang 本身就有提供cross-compile相關的工具

以下紀錄的是在windows x64下將golang cross-compiler 成 linux x86

1.先到 $GOROOT 底下的 src(我個人是 C:/go/src)建立一個build.bat檔

2.edit build.bat
set CGO_ENABLED=0
set GOROOT_BOOTSTRAP=C:/Go
:::::::x86:::::::
set GOARCH=386

set GOOS=windows
call make.bat --no-clean

set GOOS=linux
call make.bat --no-clean
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:::::::x64:::::::
set GOARCH=amd64

set GOOS=linux
call make.bat --no-clean

set GOOS=windows
call make.bat --no-clean
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

set GOARCH=amd64
set GOOS=windows
go get github.com/nsf/gocode
pause

3.執行 build.bat

4.到 $GOROOT/bin 檢查是否有安裝相關檔案(ex:linux_386)

5.到要編譯程式的資料夾底下，我將指令寫成cross-compiler2linux_x86.bat檔
cd %~dp0
set GOOS=linux
set GOARCH=386
go build helloworld.go
pause

6.執行cross-compiler2linuxx86.bat 就會生成 "helloworld"檔案

7.將 "helloworld" 檔案複製到linux x86底下執行確認。

=======================================================================

本篇cross-compile工具只有設定windows x86, x64,  linux x86,  x64四種，其他平台請參考下列原文敘述進行修改。

$GOOS and $GOARCH

The name of the target operating system and compilation architecture. These default to the values of $GOHOSTOS and $GOHOSTARCH respectively (described below).

Choices for $GOOS are darwin (Mac OS X 10.7 and above and iOS), dragonfly, freebsd, linux, netbsd, openbsd, plan9, solaris and windows. Choices for $GOARCH are amd64 (64-bit x86, the most mature port), 386(32-bit x86), arm (32-bit ARM), arm64 (64-bit ARM), ppc64le (PowerPC 64-bit, little-endian), ppc64 (PowerPC 64-bit, big-endian), mips64le (MIPS 64-bit, little-endian), and mips64 (MIPS 64-bit, big-endian). The valid combinations of $GOOS and $GOARCH are:

	$GOOS	$GOARCH
	android	arm
	darwin	386
	darwin	amd64
	darwin	arm
	darwin	arm64
	dragonfly	amd64
	freebsd	386
	freebsd	amd64
	freebsd	arm
	linux	386
	linux	amd64
	linux	arm
	linux	arm64
	linux	ppc64
	linux	ppc64le
	linux	mips64
	linux	mips64le
	netbsd	386
	netbsd	amd64
	netbsd	arm
	openbsd	386
	openbsd	amd64
	openbsd	arm
	plan9	386
	plan9	amd64
	solaris	amd64
	windows	386
	windows	amd64

ref:

https://golang.org/doc/install/source#environment

http://serverlessarchitecture.com/2016/03/29/compiling-go-from-windows-to-linux-to-run-on-aws-lambda/

openCV on VS2015

openCV教學網站

1.從官方網站下載openCV後，安裝。(一般都是直接安裝在C槽下)










2.在VS2015中開啟新專案(C++ -> Windows -> 一般 -> 空專案)

3.進行專案屬性設定

4.在VC++目錄 -> include目錄中加入openCV檔案路徑
C:\files\opencv\build\include
C:\files\opencv\build\include\opencv
C:\files\opencv\build\include\opencv2

5.在VC++目錄 -> 程式庫目錄中加入openCV函式庫
C:\files\opencv\build\x86\vc10\lib

6.在連結器 -> 輸入 -> 其他相依性 加入需要的 *.lib檔
C:\files\opencv\build\x86\vc10\lib\opencv_core231d.lib
C:\files\opencv\build\x86\vc10\lib\opencv_calib3d231d.lib
C:\files\opencv\build\x86\vc10\lib\opencv_contrib231d.lib
C:\files\opencv\build\x86\vc10\lib\opencv_features2d231d.lib
C:\files\opencv\build\x86\vc10\lib\opencv_highgui231d.lib
C:\files\opencv\build\x86\vc10\lib\opencv_imgproc231d.lib

7.加入系統環境變數 C:\files\opencv\build\x86\vc10\bin;

8.程式碼測試－開啟攝影機

#include <stdio.h>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

using namespace cv;
using namespace std;

int main() {

//抓取攝影機
VideoCapture cap(0);
//嘗試開啟攝影機
if (!cap.isOpened()) {
return -1;
}

//用矩陣紀錄抓取的每張frame
Mat frame;
//建立一個視窗,名稱為camera
namedWindow("camera", 1);
for (;;)
{
//把取得的影像放置到矩陣中
cap >> frame;
//顯示frame到camera名稱的視窗
imshow("frame", frame);
if (waitKey(30) >= 0) break;
}
system("PAUSE");
return 0;

}


搞定~~~~