如何使用 Cygwin64 和 Clang 构建 32 位应用程序？

Question

我已经成功编译并链接了一些 C 代码与 Windows+Cygwin64+Eclipse+LLVM 工具链。

我想构建一个 32 位版本，所以我在编译器和 linker 中添加了-m32标志，但最终出现错误：

/usr/bin/ld: cannot find crtbegin.o: No such file or directory
/usr/bin/ld: cannot find -lgcc_s
/usr/bin/ld: cannot find -lgcc
/usr/bin/ld: skipping incompatible /usr/lib/libcygwin.a when searching for -lcygwin
/usr/bin/ld: skipping incompatible /usr/lib/libcygwin.a when searching for -lcygwin
/usr/bin/ld: skipping incompatible /usr/lib/libcygwin.a when searching for -lcygwin
/usr/bin/ld: cannot find -lcygwin
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libadvapi32.a when searching for -ladvapi32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libadvapi32.a when searching for -ladvapi32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libadvapi32.a when searching for -ladvapi32
/usr/bin/ld: cannot find -ladvapi32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libshell32.a when searching for -lshell32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libshell32.a when searching for -lshell32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libshell32.a when searching for -lshell32
/usr/bin/ld: cannot find -lshell32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libuser32.a when searching for -luser32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libuser32.a when searching for -luser32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libuser32.a when searching for -luser32
/usr/bin/ld: cannot find -luser32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libkernel32.a when searching for -lkernel32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libkernel32.a when searching for -lkernel32
/usr/bin/ld: skipping incompatible /usr/lib/w32api/libkernel32.a when searching for -lkernel32
/usr/bin/ld: cannot find -lkernel32
/usr/bin/ld: cannot find crtend.o: No such file or directory
clang-8: error: linker command failed with exit code 1 (use -v to see invocation)

是否可以使用 64 位 Cygwin 构建 32 位应用程序？

Answer 1

您必须安装 32 位版本的库。 您必须安装 package cygwin32-gcc-core才能获取所有库+编译器。 然后你必须调用 gcc 为 32 位i686-pc-cygwin-gcc ，因为gcc通常是x86_64-pc-cygwin-gcc的链接。