c-make命令在MacOS Big Sur-11.5.2上不起作用

Question

我正在尝试在Swift项目中使用C库的示例。以下是的参考链接

https://medium.com/bumble-tech/bundling-c-library-in-swift-framework-3d9dae950774

C库文件链接https://sourceforge.net/projects/giflib/files/

按照教程链接中的说明，解压缩代码并通过终端转到文件夹，然后使用make命令，它不起作用。我正试着在MAC oS Big Sur上做这件事。以下是错误

**ABC-MacBook-Pro:giflib-5.2.1 abc$ make**
cc -std=gnu99 -fPIC -Wall -Wno-format-truncation -O2 -shared  -Wl,-install_name -Wl,libutil.so.7 -o libutil.so qprintf.o quantize.o getarg.o
Undefined symbols for architecture x86_64:
"_GifErrorString", referenced from:
_PrintGifError in qprintf.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [libutil.so] Error 1

Answer 1

更改

USOURCES = qprintf.c quantize.c getarg.c

到这个

USOURCES = qprintf.c quantize.c getarg.c gif_err.c

在CCD_ 1内部。另外，更改这些行：

$(CC) $(CFLAGS) -shared $(LDFLAGS) -Wl,-soname -Wl,libgif.so.$(LIBMAJOR) -o libgif.so $(OBJECTS)
...
...
$(CC) $(CFLAGS) -shared $(LDFLAGS) -Wl,-soname -Wl,libutil.so.$(LIBMAJOR) -o libutil.so $(UOBJECTS)

至

$(CC) $(CFLAGS) -shared $(LDFLAGS) -Wl,-install_name -Wl,libgif.so.$(LIBMAJOR) -o libgif.so $(OBJECTS)
...
...
$(CC) $(CFLAGS) -shared $(LDFLAGS) -Wl,-install_name -Wl,libutil.so.$(LIBMAJOR) -o libutil.so $(UOBJECTS)

将完成的工作

> make
cc -std=gnu99 -fPIC -Wall -Wno-format-truncation -O2   -c -o dgif_lib.o dgif_lib.c
warning: unknown warning option '-Wno-format-truncation' [-Wunknown-warning-option]
...
...
cc -std=gnu99 -fPIC -Wall -Wno-format-truncation -O2    gifwedge.c libgif.a libutil.a  libgif.a -lm -o gifwedge
warning: unknown warning option '-Wno-format-truncation' [-Wunknown-warning-option]
1 warning generated.

若要跳过xmlto执行，请删除

#       $(MAKE) -C doc