Try building project and support cross-compilation using third-party buildsystem

[waruqi]

We can try building project using third-party buildsystem when xmake.lua not found.

Roadmap

• autotools
  • support cross-compilation
• xcodebuild
• cmake
• make
• msbuild
• scons
• meson
• bazel
• ndkbuild
• ninja

Usage:

• Detect buildsystem and build project automatically (default)

$ xmake 
note: CMakeLists.txt found, try building it (pass -y or --confirm=y/n/d to skip confirm)?
please input: y (y/n)
-- Symbol prefix:
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/ruki/Downloads/libpng-1.6.35/build
[  7%] Built target png-fix-itxt
[ 21%] Built target genfiles
[ 81%] Built target png
[ 83%] Built target png_static
...
output to /Users/ruki/Downloads/libpng-1.6.35/build/artifacts
build ok!

• Select the given buildsystem to build project

$ xmake f --trybuild=[autotools|cmake|make|msbuild| ..]
$ xmake

• Support cross-compilation and other platform

Uses autotools to build android platform target.

$ xmake f -p android --trybuild=autotools
$ xmake

Uses cmake to do cross-compilation

$ xmake f -p cross --trybuild=cmake --sdk=/xxxx --cross=arm-linux- 
$ xmake

• Support clean and rebuild

$ xmake f --trybuild=autotools
$ xmake clean
$ xmake --rebuild

• Uses xmake-repo/package/xmake.lua to build project

https://github.com/xmake-io/xmake-repo

$ cd zlib
$ xmake f --trybuild=xmake-repo/zlib
$ xmake 

• Set extra user configs to the third-party buildsystem.

$ xmake f --trybuild=autotools --tryconfigs="--enable-shared=no"
$ xmake

[waruqi]

就先这样吧，凑活着用用 可以了 回头有时间了再完善下 把cmake的交叉编译补上

[waruqi]

Support build jni/Android.mk

cd android_app_project
xmake f -p android --trybuild=ndkbuild
xmake

android_app_project/jni/Android.mk