gmagick 和 GraphicsMagicks：静态链接

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我正在尝试编译一个用 go 编写的二进制文件，我们与 graphicsmagick 有一个静态链接（go gmagick 和他的 libgraphicsmagick1-dev 包）。

实际上，二进制文件在动态下运行得很好，但我想要一个开箱即用的，以避免安装库、配置等。

我对静态链接一点也不熟悉，这是我尝试过的：

cgo_enabled=0
go build --ldflags='-extldflags=-static'

结果是大量错误（我会提到一些，输出比这大得多）：

/usr/bin/ld: (.text+0xd18): undefined reference to `exp'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-gem.o): in function `Hull':
(.text+0x1369): undefined reference to `GOMP_parallel'
/usr/bin/ld: (.text+0x13ad): undefined reference to `GOMP_parallel'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-gem.o): in function `Contrast':
(.text+0x17d3): undefined reference to `sin'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-gem.o): in function `ExpandAffine':
(.text+0x3a8): undefined reference to `sqrt'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-image.o): in function `DisplayImages':
(.text+0x1bde): undefined reference to `XOpenDisplay'
/usr/bin/ld: (.text+0x1bfd): undefined reference to `XSetErrorHandler'
/usr/bin/ld: (.text+0x1cb0): undefined reference to `XCloseDisplay'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-image.o): in function `AnimateImages':
(.text+0x26ca): undefined reference to `XOpenDisplay'
/usr/bin/ld: (.text+0x26e9): undefined reference to `XSetErrorHandler'
/usr/bin/ld: (.text+0x2746): undefined reference to `XCloseDisplay'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-log.o): in function `LogMagickEventList':
(.text+0xbb0): undefined reference to `fmod'
/usr/bin/ld: (.text+0xf01): undefined reference to `fmod'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-omp_data_view.o): in function `AllocateThreadViewDataSet':
(.text+0xba): undefined reference to `omp_get_max_threads'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-omp_data_view.o): in function `AccessThreadViewData':
(.text+0x2c5): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `AccessDefaultCacheView':
(.text+0x17ad): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `AccessImmutableIndexes':
(.text+0x1839): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `AccessMutableIndexes':
(.text+0x1909): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `AccessMutablePixels':
(.text+0x19d5): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o):(.text+0x1b76): more undefined references to `omp_get_thread_num' follow
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `AllocateThreadViewSet':
(.text+0x3c25): undefined reference to `omp_get_max_threads'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `GetImagePixelsEx':
(.text+0x5e56): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `GetImagePixels':
(.text+0x5f6a): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `SetImagePixels':
(.text+0x617c): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `SetImagePixelsEx':
(.text+0x622c): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o): in function `SyncImagePixels':
(.text+0x67a8): undefined reference to `omp_get_thread_num'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_cache.o):(.text+0x6838): more undefined references to `omp_get_thread_num' follow
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_iterator.o): in function `PixelIterateMonoRead._omp_fn.0':
(.text+0x94): undefined reference to `GOMP_loop_nonmonotonic_guided_start'
/usr/bin/ld: (.text+0x184): undefined reference to `GOMP_loop_nonmonotonic_guided_next'
/usr/bin/ld: (.text+0x191): undefined reference to `GOMP_loop_end_nowait'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_iterator.o): in function `PixelIterateMonoModifyImplementation._omp_fn.0':
(.text+0x2c5): undefined reference to `GOMP_loop_nonmonotonic_guided_start'
/usr/bin/ld: (.text+0x443): undefined reference to `GOMP_loop_nonmonotonic_guided_next'
/usr/bin/ld: (.text+0x450): undefined reference to `GOMP_loop_end_nowait'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../../lib/libGraphicsMagick.a(libGraphicsMagick_la-pixel_iterator.o): in function `PixelIterateTripleImplementation':
(.text+0x506): undefined reference to `omp_get_max_threads'

显然二进制文件没有创建。

就好像编译器没有找到要编译的 c 代码一样。接下来我可以尝试什么？

正确答案

我认为问题是，虽然您静态编译了“GraphicsMagick”libGraphicsMagick.a，但您没有将其依赖项静态编译为：

• omp_get_max_threads 来自 OpenMP
• XCloseDisplay 我认为来自 Xlib
• 数学函数“sin”和“fmod”也来自另一个库

本篇关于《gmagick 和 GraphicsMagicks：静态链接》的介绍就到此结束啦，但是学无止境，想要了解学习更多关于Golang的相关知识，请关注golang学习网公众号！