尝试使用其他构建系统构建
xmake v2.3.1以上版本直接对接了其他第三方构建系统,即使其他项目中没有使用xmake.lua来维护,xmake也可以直接调用其他构建工具来完成编译。
那用户直接调用使用第三方构建工具来编译不就行了,为啥还要用xmake去调用呢?主要有以下好处:
- 完全的行为一致,简化编译流程,不管用了哪个其他构建系统,都只需要执行xmake这个命令就可以编译,用户不再需要去研究其他工具的不同的编译流程
- 完全对接
xmake config
的配置环境,复用xmake的平台探测和sdk环境检测,简化平台配置 - 对接交叉编译环境,即使是用autotools维护的项目,也能通过xmake快速实现交叉编译
目前已支持的构建系统:
- autotools(已完全对接xmake的交叉编译环境)
- xcodebuild
- cmake
- make
- msbuild
- scons
- meson
- bazel
- ndkbuild
- ninja
自动探测构建系统并编译
例如,对于一个使用cmake维护的项目,直接在项目根目录执行xmake,就会自动触发探测机制,检测到CMakeLists.txt,然后提示用户是否需要使用cmake来继续完成编译。
$ 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!
无缝对接xmake命令
目前支持xmake clean
, xmake --rebuild
和xmake config
等常用命令与第三方系统的无缝对接。
我们可以直接清理cmake维护项目的编译输出文件
$ xmake clean
$ xmake clean --all
如果带上--all
执行清理,会清除autotools/cmake生成的所有文件,不仅仅只清理对象文件。
默认xmake
对接的是增量构建行为,不过我们也可以强制快速重建:
$ xmake --rebuild
手动切换指定构建系统
如果一个项目下有多个构建系统同时在维护,比如libpng项目,自带autotools/cmake/makefile等构建系统维护,xmake默认优先探测使用了autotools,如果想要强制切换其他构建系统,可以执行:
$ xmake f --trybuild=[autotools|cmake|make|msbuild| ..]
$ xmake
另外,配置了--trybuild=
参数手动指定了默认的构建系统,后续的build过程就不会额外提示用户选择了。
实现快速交叉编译
众所周知,autotools维护的项目虽然很多都支持交叉编译,但是交叉编译的配置过程很复杂,不同的工具链处理方式还有很多的差异,中途会踩到很多的坑。
即使跑通了一个工具链的交叉编译,如果切到另外一个工具链环境,可能又要折腾好久,而如果使用xmake,通常只需要两条简单的命令即可:
!> 目前就autotools对接支持了xmake的交叉编译,后期还会对cmake等其他构建系统加上支持。
交叉编译android平台
$ xmake f -p android --trybuild=autotools [--ndk=xxx]
$ xmake
!> 其中,—ndk参数配置是可选的,如果用户设置了ANDROID_NDK_HOME环境变量,或者ndk放置在~/Library/Android/sdk/ndk-bundle,xmake都能自动检测到。
是不是很简单?如果你觉得这没啥,那么可以对比下直接操作./configure
去配置交叉编译,可以看下这篇文档对比下:将NDK 与其他编译系统配合使用
说白了,你大概得这样,还不一定一次就能搞定:
$ export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/$HOST_TAG
$ export AR=$TOOLCHAIN/bin/aarch64-linux-android-ar
$ export AS=$TOOLCHAIN/bin/aarch64-linux-android-as
$ export CC=$TOOLCHAIN/bin/aarch64-linux-android21-clang
$ export CXX=$TOOLCHAIN/bin/aarch64-linux-android21-clang++
$ export LD=$TOOLCHAIN/bin/aarch64-linux-android-ld
$ export RANLIB=$TOOLCHAIN/bin/aarch64-linux-android-ranlib
$ export STRIP=$TOOLCHAIN/bin/aarch64-linux-android-strip
$ ./configure --host aarch64-linux-android
$ make
交叉编译iphoneos平台
$ xmake f -p iphoneos --trybuild=autotools
$ xmake
交叉编译mingw平台
$ xmake f -p mingw --trybuild=autotools [--mingw=xxx]
$ xmake
使用其他交叉编译工具链
$ xmake f -p cross --trybuild=autotools --sdk=/xxxx
$ xmake
关于更多交叉编译的配置细节,请参考文档:交叉编译,除了多了一个--trybuild=
参数,其他交叉编译配置参数都是完全通用的。
传递用户配置参数
我们可以通过--tryconfigs=
来传递用户额外的配置参数到对应的第三方构建系统,比如:autotools会传递给./configure
,cmake会传递给cmake
命令。
$ xmake f --trybuild=autotools --tryconfigs="--enable-shared=no"
$ xmake
比如上述命令,传递--enable-shared=no
给./configure
,来禁用动态库编译。
另外,对于--cflags
, --includedirs
和--ldflags
等参数,不需要通过--tryconfigs
,通过xmake config --cflags=
等内置参数就可透传过去。
编译其他构建系统过程示例
通用编译方式
大多数情况下,每个构建系统对接后的编译方式都是一致的,除了--trybuild=
配置参数除外。
$ xmake f --trybuild=[autotools|cmake|meson|ninja|bazel|make|msbuild|xcodebuild]
$ xmake
!> 我们还需要确保—trybuild指定的构建工具已经安装能够正常使用。
构建Android jni程序
如果当前项目下存在jni/Android.mk
,那么xmake可以直接调用ndk-build来构建jni库。
$ xmake f -p android --trybuild=ndkbuild [--ndk=]
$ xmake
自动扫描源码生成xmake.lua
对于一份工程源码,可以不用编写makefile,也不用编写各种make相关的工程描述文件(例如:xmake.lua,makefile.am, cmakelist.txt等)
xmake就可以直接编译他们,这是如何做到的呢,简单来说下实现原理:
- 首先扫描当前目录下,xmake所以支持的所有源代码文件
- 分析代码,检测哪些代码拥有main入口函数
- 所有没有main入口的代码编译成静态库
- 带有main入口的代码,编译成可执行程序,同时链接其他静态库程序
这种代码扫描和智能编译,非常简单,目前xmake还不支持多级目录扫描,只对单级目录的代码进行扫描编译。。
使用场景
- 临时快速编译和运行一些零散的测试代码
- 尝试对其他开源库做移植编译
- 快速基于现有代码创建新xmake工程
如何使用
直接在带有源码的目录(没有xmake.lua)下执行xmake,然后根据提示操作:
$ xmake
note: xmake.lua not found, try generating it (pass -y or --confirm=y/n/d to skip confirm)?
please input: n (y/n)
y
开源代码的移植和编译
虽然这种方式,并不是非常智能,限制也不少,但是对于想临时写些代码进行编译运行,或者临时想交叉编译一些简单的开源库代码
这种方式已经足够使用了,下面看下一个实际的例子:
我下载了一份zlib-1.2.10的源码,想要编译它,只需要进入zlib的源码目录执行:
$ cd zlib-1.2.10
$ xmake
note: xmake.lua not found, try generating it (pass -y or --confirm=y/n/d to skip confirm)?
please input: n (y/n)
y
就行了,输入y确认后,输出结果如下:
target(zlib-1.2): static
[+]: ./adler32.c
[+]: ./compress.c
[+]: ./crc32.c
[+]: ./deflate.c
[+]: ./gzclose.c
[+]: ./gzlib.c
[+]: ./gzread.c
[+]: ./gzwrite.c
[+]: ./infback.c
[+]: ./inffast.c
[+]: ./inflate.c
[+]: ./inftrees.c
[+]: ./trees.c
[+]: ./uncompr.c
[+]: ./zutil.c
xmake.lua generated, scan ok!👌
checking for the architecture ... x86_64
checking for the Xcode SDK version for macosx ... 10.12
checking for the target minimal version ... 10.12
checking for the c compiler (cc) ... xcrun -sdk macosx clang
checking for the c++ compiler (cxx) ... xcrun -sdk macosx clang
checking for the objc compiler (mm) ... xcrun -sdk macosx clang
checking for the objc++ compiler (mxx) ... xcrun -sdk macosx clang++
checking for the swift compiler (sc) ... xcrun -sdk macosx swiftc
checking for the assember (as) ... xcrun -sdk macosx clang
checking for the linker (ld) ... xcrun -sdk macosx clang++
checking for the static library archiver (ar) ... xcrun -sdk macosx ar
checking for the static library extractor (ex) ... xcrun -sdk macosx ar
checking for the shared library linker (sh) ... xcrun -sdk macosx clang++
checking for the debugger (dd) ... xcrun -sdk macosx lldb
checking for the golang compiler (go) ... go
configure
{
ex = "xcrun -sdk macosx ar"
, sh = "xcrun -sdk macosx clang++"
, host = "macosx"
, ar = "xcrun -sdk macosx ar"
, buildir = "build"
, as = "xcrun -sdk macosx clang"
, plat = "macosx"
, xcode_dir = "/Applications/Xcode.app"
, arch = "x86_64"
, mxx = "xcrun -sdk macosx clang++"
, go = "go"
, target_minver = "10.12"
, ccache = "ccache"
, mode = "release"
, clean = true
, cxx = "xcrun -sdk macosx clang"
, cc = "xcrun -sdk macosx clang"
, dd = "xcrun -sdk macosx lldb"
, kind = "static"
, ld = "xcrun -sdk macosx clang++"
, xcode_sdkver = "10.12"
, sc = "xcrun -sdk macosx swiftc"
, mm = "xcrun -sdk macosx clang"
}
configure ok!
clean ok!
[00%]: ccache compiling.release ./adler32.c
[06%]: ccache compiling.release ./compress.c
[13%]: ccache compiling.release ./crc32.c
[20%]: ccache compiling.release ./deflate.c
[26%]: ccache compiling.release ./gzclose.c
[33%]: ccache compiling.release ./gzlib.c
[40%]: ccache compiling.release ./gzread.c
[46%]: ccache compiling.release ./gzwrite.c
[53%]: ccache compiling.release ./infback.c
[60%]: ccache compiling.release ./inffast.c
[66%]: ccache compiling.release ./inflate.c
[73%]: ccache compiling.release ./inftrees.c
[80%]: ccache compiling.release ./trees.c
[86%]: ccache compiling.release ./uncompr.c
[93%]: ccache compiling.release ./zutil.c
[100%]: archiving.release libzlib-1.2.a
build ok!👌
通过输出结果,可以看到,xmake会去检测扫描当前目录下的所有.c代码,发现没有main入口,应该是静态库程序,因此执行xmake后,就直接编译成静态库libzlib-1.2.a了
连xmake.lua都没有编写,其实xmake在扫描完成后,会去自动在当前目录下生成一份xmake.lua,下次编译就不需要重新扫描检测了。
自动生成的xmake.lua内容如下:
-- define target
target("zlib-1.2")
-- set kind
set_kind("static")
-- add files
add_files("./adler32.c")
add_files("./compress.c")
add_files("./crc32.c")
add_files("./deflate.c")
add_files("./gzclose.c")
add_files("./gzlib.c")
add_files("./gzread.c")
add_files("./gzwrite.c")
add_files("./infback.c")
add_files("./inffast.c")
add_files("./inflate.c")
add_files("./inftrees.c")
add_files("./trees.c")
add_files("./uncompr.c")
add_files("./zutil.c")
也许你会说,像这种开源库,直接configure; make
不就好了吗,他们自己也有提供makefile来直接编译的,的确是这样,我这里只是举个例子而已。。
当然,很多开源库在交叉编译的时候,通过自带的configure
,处理起来还是很繁琐的,用xmake进行交叉编译会更方便些。。
即时地代码编写和编译运行
xmake的这个扫描代码编译特性,主要的目的:还是为了让我们在临时想写些测试代码的时候,不用考虑太多东西,直接上手敲代码,然后快速执行xmake run
来调试验证结果。。
例如:
我想写了个简单的main.c的测试程序,打印hello world!
,如果要写makefile或者直接通过gcc命令来,就很繁琐了,你需要:
gcc ./main.c -o demo
./demo
最快速的方式,也需要执行两行命令,而如果用xmake,只需要执行:
xmake run
就行了,它会自动检测到代码后,自动生成对应的xmake.lua,自动编译,自动运行,然后输出:
hello world!
如果你有十几个代码文件,用手敲gcc的方式,或者写makefile的方式,这个差距就更明显了,用xmake还是只需要一行命令:
xmake run
多语言支持
这种代码检测和即时编译,是支持多语言的,不仅支持c/c++,还支持objc/swift,后期还会支持golang(正在开发中)
例如我下载了一份fmdb的ios开源框架代码:
.
├── FMDB.h
├── FMDatabase.h
├── FMDatabase.m
├── FMDatabaseAdditions.h
├── FMDatabaseAdditions.m
├── FMDatabasePool.h
├── FMDatabasePool.m
├── FMDatabaseQueue.h
├── FMDatabaseQueue.m
├── FMResultSet.h
└── FMResultSet.m
想要把它编译成ios的静态库,但是又不想写xmake.lua,或者makefile,那么只需要使用xmake的这个新特性,直接执行:
$ xmake f -p iphoneos; xmake
就行了,输出结果如下:
xmake.lua not found, scanning files ..
target(FMDB): static
[+]: ./FMDatabase.m
[+]: ./FMDatabaseAdditions.m
[+]: ./FMDatabasePool.m
[+]: ./FMDatabaseQueue.m
[+]: ./FMResultSet.m
xmake.lua generated, scan ok!👌
checking for the architecture ... armv7
checking for the Xcode SDK version for iphoneos ... 10.1
checking for the target minimal version ... 10.1
checking for the c compiler (cc) ... xcrun -sdk iphoneos clang
checking for the c++ compiler (cxx) ... xcrun -sdk iphoneos clang
checking for the objc compiler (mm) ... xcrun -sdk iphoneos clang
checking for the objc++ compiler (mxx) ... xcrun -sdk iphoneos clang++
checking for the assember (as) ... gas-preprocessor.pl xcrun -sdk iphoneos clang
checking for the linker (ld) ... xcrun -sdk iphoneos clang++
checking for the static library archiver (ar) ... xcrun -sdk iphoneos ar
checking for the static library extractor (ex) ... xcrun -sdk iphoneos ar
checking for the shared library linker (sh) ... xcrun -sdk iphoneos clang++
checking for the swift compiler (sc) ... xcrun -sdk iphoneos swiftc
configure
{
ex = "xcrun -sdk iphoneos ar"
, ccache = "ccache"
, host = "macosx"
, ar = "xcrun -sdk iphoneos ar"
, buildir = "build"
, as = "/usr/local/share/xmake/tools/utils/gas-preprocessor.pl xcrun -sdk iphoneos clang"
, arch = "armv7"
, mxx = "xcrun -sdk iphoneos clang++"
, cxx = "xcrun -sdk iphoneos clang"
, target_minver = "10.1"
, xcode_dir = "/Applications/Xcode.app"
, clean = true
, sh = "xcrun -sdk iphoneos clang++"
, cc = "xcrun -sdk iphoneos clang"
, ld = "xcrun -sdk iphoneos clang++"
, mode = "release"
, kind = "static"
, plat = "iphoneos"
, xcode_sdkver = "10.1"
, sc = "xcrun -sdk iphoneos swiftc"
, mm = "xcrun -sdk iphoneos clang"
}
configure ok!
clean ok!
[00%]: ccache compiling.release ./FMDatabase.m
[20%]: ccache compiling.release ./FMDatabaseAdditions.m
[40%]: ccache compiling.release ./FMDatabasePool.m
[60%]: ccache compiling.release ./FMDatabaseQueue.m
[80%]: ccache compiling.release ./FMResultSet.m
[100%]: archiving.release libFMDB.a
build ok!👌
同时编译多个可执行文件
输出结果的开头部分,就是对代码的分析结果,虽然目前只支持单级目录结构的代码扫描,但是还是可以同时支持检测和编译多个可执行文件的
我们以libjpeg的开源库为例:
我们进入jpeg-6b目录后,执行:
$ xmake
输出如下:
xmake.lua not found, scanning files ..
target(jpeg-6b): static
[+]: ./cdjpeg.c
[+]: ./example.c
[+]: ./jcapimin.c
[+]: ./jcapistd.c
[+]: ./jccoefct.c
[+]: ./jccolor.c
[+]: ./jcdctmgr.c
[+]: ./jchuff.c
[+]: ./jcinit.c
[+]: ./jcmainct.c
[+]: ./jcmarker.c
[+]: ./jcmaster.c
[+]: ./jcomapi.c
[+]: ./jcparam.c
[+]: ./jcphuff.c
[+]: ./jcprepct.c
[+]: ./jcsample.c
[+]: ./jctrans.c
[+]: ./jdapimin.c
[+]: ./jdapistd.c
[+]: ./jdatadst.c
[+]: ./jdatasrc.c
[+]: ./jdcoefct.c
[+]: ./jdcolor.c
[+]: ./jddctmgr.c
[+]: ./jdhuff.c
[+]: ./jdinput.c
[+]: ./jdmainct.c
[+]: ./jdmarker.c
[+]: ./jdmaster.c
[+]: ./jdmerge.c
[+]: ./jdphuff.c
[+]: ./jdpostct.c
[+]: ./jdsample.c
[+]: ./jdtrans.c
[+]: ./jerror.c
[+]: ./jfdctflt.c
[+]: ./jfdctfst.c
[+]: ./jfdctint.c
[+]: ./jidctflt.c
[+]: ./jidctfst.c
[+]: ./jidctint.c
[+]: ./jidctred.c
[+]: ./jmemansi.c
[+]: ./jmemmgr.c
[+]: ./jmemname.c
[+]: ./jmemnobs.c
[+]: ./jquant1.c
[+]: ./jquant2.c
[+]: ./jutils.c
[+]: ./rdbmp.c
[+]: ./rdcolmap.c
[+]: ./rdgif.c
[+]: ./rdppm.c
[+]: ./rdrle.c
[+]: ./rdswitch.c
[+]: ./rdtarga.c
[+]: ./transupp.c
[+]: ./wrbmp.c
[+]: ./wrgif.c
[+]: ./wrppm.c
[+]: ./wrrle.c
[+]: ./wrtarga.c
target(ansi2knr): binary
[+]: ./ansi2knr.c
target(cjpeg): binary
[+]: ./cjpeg.c
target(ckconfig): binary
[+]: ./ckconfig.c
target(djpeg): binary
[+]: ./djpeg.c
target(jpegtran): binary
[+]: ./jpegtran.c
target(rdjpgcom): binary
[+]: ./rdjpgcom.c
target(wrjpgcom): binary
[+]: ./wrjpgcom.c
xmake.lua generated, scan ok!👌
checking for the architecture ... x86_64
checking for the Xcode SDK version for macosx ... 10.12
checking for the target minimal version ... 10.12
checking for the c compiler (cc) ... xcrun -sdk macosx clang
checking for the c++ compiler (cxx) ... xcrun -sdk macosx clang
checking for the objc compiler (mm) ... xcrun -sdk macosx clang
checking for the objc++ compiler (mxx) ... xcrun -sdk macosx clang++
checking for the swift compiler (sc) ... xcrun -sdk macosx swiftc
checking for the assember (as) ... xcrun -sdk macosx clang
checking for the linker (ld) ... xcrun -sdk macosx clang++
checking for the static library archiver (ar) ... xcrun -sdk macosx ar
checking for the static library extractor (ex) ... xcrun -sdk macosx ar
checking for the shared library linker (sh) ... xcrun -sdk macosx clang++
checking for the debugger (dd) ... xcrun -sdk macosx lldb
checking for the golang compiler (go) ... go
configure
{
ex = "xcrun -sdk macosx ar"
, sh = "xcrun -sdk macosx clang++"
, host = "macosx"
, ar = "xcrun -sdk macosx ar"
, buildir = "build"
, as = "xcrun -sdk macosx clang"
, plat = "macosx"
, xcode_dir = "/Applications/Xcode.app"
, arch = "x86_64"
, mxx = "xcrun -sdk macosx clang++"
, go = "go"
, target_minver = "10.12"
, ccache = "ccache"
, mode = "release"
, clean = true
, cxx = "xcrun -sdk macosx clang"
, cc = "xcrun -sdk macosx clang"
, dd = "xcrun -sdk macosx lldb"
, kind = "static"
, ld = "xcrun -sdk macosx clang++"
, xcode_sdkver = "10.12"
, sc = "xcrun -sdk macosx swiftc"
, mm = "xcrun -sdk macosx clang"
}
configure ok!
clean ok!
[00%]: ccache compiling.release ./cdjpeg.c
[00%]: ccache compiling.release ./example.c
[00%]: ccache compiling.release ./jcapimin.c
[00%]: ccache compiling.release ./jcapistd.c
[00%]: ccache compiling.release ./jccoefct.c
[00%]: ccache compiling.release ./jccolor.c
[01%]: ccache compiling.release ./jcdctmgr.c
[01%]: ccache compiling.release ./jchuff.c
[01%]: ccache compiling.release ./jcinit.c
[01%]: ccache compiling.release ./jcmainct.c
[01%]: ccache compiling.release ./jcmarker.c
[02%]: ccache compiling.release ./jcmaster.c
[02%]: ccache compiling.release ./jcomapi.c
[02%]: ccache compiling.release ./jcparam.c
[02%]: ccache compiling.release ./jcphuff.c
[02%]: ccache compiling.release ./jcprepct.c
[03%]: ccache compiling.release ./jcsample.c
[03%]: ccache compiling.release ./jctrans.c
[03%]: ccache compiling.release ./jdapimin.c
[03%]: ccache compiling.release ./jdapistd.c
[03%]: ccache compiling.release ./jdatadst.c
[04%]: ccache compiling.release ./jdatasrc.c
[04%]: ccache compiling.release ./jdcoefct.c
[04%]: ccache compiling.release ./jdcolor.c
[04%]: ccache compiling.release ./jddctmgr.c
[04%]: ccache compiling.release ./jdhuff.c
[05%]: ccache compiling.release ./jdinput.c
[05%]: ccache compiling.release ./jdmainct.c
[05%]: ccache compiling.release ./jdmarker.c
[05%]: ccache compiling.release ./jdmaster.c
[05%]: ccache compiling.release ./jdmerge.c
[06%]: ccache compiling.release ./jdphuff.c
[06%]: ccache compiling.release ./jdpostct.c
[06%]: ccache compiling.release ./jdsample.c
[06%]: ccache compiling.release ./jdtrans.c
[06%]: ccache compiling.release ./jerror.c
[07%]: ccache compiling.release ./jfdctflt.c
[07%]: ccache compiling.release ./jfdctfst.c
[07%]: ccache compiling.release ./jfdctint.c
[07%]: ccache compiling.release ./jidctflt.c
[07%]: ccache compiling.release ./jidctfst.c
[08%]: ccache compiling.release ./jidctint.c
[08%]: ccache compiling.release ./jidctred.c
[08%]: ccache compiling.release ./jmemansi.c
[08%]: ccache compiling.release ./jmemmgr.c
[08%]: ccache compiling.release ./jmemname.c
[09%]: ccache compiling.release ./jmemnobs.c
[09%]: ccache compiling.release ./jquant1.c
[09%]: ccache compiling.release ./jquant2.c
[09%]: ccache compiling.release ./jutils.c
[09%]: ccache compiling.release ./rdbmp.c
[10%]: ccache compiling.release ./rdcolmap.c
[10%]: ccache compiling.release ./rdgif.c
[10%]: ccache compiling.release ./rdppm.c
[10%]: ccache compiling.release ./rdrle.c
[10%]: ccache compiling.release ./rdswitch.c
[11%]: ccache compiling.release ./rdtarga.c
[11%]: ccache compiling.release ./transupp.c
[11%]: ccache compiling.release ./wrbmp.c
[11%]: ccache compiling.release ./wrgif.c
[11%]: ccache compiling.release ./wrppm.c
[12%]: ccache compiling.release ./wrrle.c
[12%]: ccache compiling.release ./wrtarga.c
[12%]: archiving.release libjpeg-6b.a
[12%]: ccache compiling.release ./wrjpgcom.c
[25%]: linking.release wrjpgcom
[25%]: ccache compiling.release ./ansi2knr.c
[37%]: linking.release ansi2knr
[37%]: ccache compiling.release ./jpegtran.c
[50%]: linking.release jpegtran
[50%]: ccache compiling.release ./djpeg.c
[62%]: linking.release djpeg
[62%]: ccache compiling.release ./ckconfig.c
[75%]: linking.release ckconfig
[75%]: ccache compiling.release ./rdjpgcom.c
[87%]: linking.release rdjpgcom
[87%]: ccache compiling.release ./cjpeg.c
[100%]: linking.release cjpeg
build ok!👌
可以看到,处理静态库,xmake还分析出了很多可执行的测试程序,剩下的代码统一编译成一个 libjpeg.a 的静态库,供哪些测试程序链接使用。。
target(ansi2knr): binary
[+]: ./ansi2knr.c
target(cjpeg): binary
[+]: ./cjpeg.c
target(ckconfig): binary
[+]: ./ckconfig.c
target(djpeg): binary
[+]: ./djpeg.c
target(jpegtran): binary
[+]: ./jpegtran.c
target(rdjpgcom): binary
[+]: ./rdjpgcom.c
target(wrjpgcom): binary
[+]: ./wrjpgcom.c
遇到的一些问题和限制
当前xmake的这种自动分析检测还不是非常智能,对于:
- 需要特殊的编译选项
- 需要依赖其他目录的头文件搜索
- 需要分条件编译不同源文件
- 同目录需要生成多个静态库
- 需要多级目录支持的源码库
以上这些情况,xmake暂时还没发自动化的智能处理,其中限制1,2还是可以解决的,通过半手动的方式,例如:
$ xmake f --cxflags="" --ldflags="" --includedirs="" --linkdirs=""; xmake
在自动检测编译的时候,手动配置这个源码工程需要的特殊编译选项,就可以直接通过编译了
而限制3,暂时只能通过删源代码来解决了,就像刚才编译jpeg的代码,其实它的目录下面同时存在了:
jmemdos.c
jmemmac.c
jmemansi.c
其中两个是没法编译过的,需要删掉后才行。。