MinGW 32/64 不能为 32 位编译

时间：2021-03-29 10:44:30

标签： c++ windows gcc codeblocks mingw-w64

我编写了一个用于 LabView 2020（32 位）的 DLL。 在 Code::Blocks IDE v20.03 中开发，几天前安装了 Win-Builds（32/64 位 mingw 工具 g++ 和 gcc）。

DLL 可以很好地编译为 64 位，适用于 Windows（VBA 测试应用程序和 rundll）。 32位编译不成功，以错误结束。

在论坛中我读到使用“-m32”参数进行编译。

我该怎么做？

编译日志 64 位：

-------------- Build: Release in SampleDLL1 (compiler: GNU GCC Compiler)---------------
g++.exe -Wall -DBUILD_DLL -O2  -c C:\Hello\SampleDLL1\main.cpp -o obj\Release\main.o
g++.exe -shared -Wl,--output-def=bin\Release\libSampleDLL1.def -Wl,--out-implib=bin\Release\libSampleDLL1.a -Wl,--dll  obj\Release\main.o  -o bin\Release\SampleDLL1.dll -s -luser32
Output file is bin\Release\SampleDLL1.dll with size 18.50 KB
Process terminated with status 0 (0 minute(s), 2 second(s))
0 error(s), 0 warning(s) (0 minute(s), 2 second(s))

*Compilation logs 32bit : (uses -m32 parameter and -lmingw32 for linker)
ERROR : some parameters are "cannot find"*
-------------- Build: Release in SampleDLL1 (compiler: GNU GCC Compiler)---------------
g++.exe -Wall -DBUILD_DLL -O2 -m32  -c C:\Hello\SampleDLL1\main.cpp -o obj\Release\main.o
g++.exe -shared -Wl,--output-def=bin\Release\libSampleDLL1.def -Wl,--out-implib=bin\Release\libSampleDLL1.a -Wl,--dll  obj\Release\main.o  -o bin\Release\SampleDLL1.dll -s -m32 -lmingw32  -luser32
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libstdc++.dll.a when searching for -lstdc++
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libstdc++.a when searching for -lstdc++
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64\libstdc++.a when searching for -lstdc++
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libstdc++.dll.a when searching for -lstdc++
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libstdc++.a when searching for -lstdc++
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lstdc++
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libgcc_s.a when searching for -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64\libgcc_s.a when searching for -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libgcc_s.a when searching for -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/libgcc.a when searching for -lgcc
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3\libgcc.a when searching for -lgcc
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/libgcc.a when searching for -lgcc
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lgcc
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/lib/libpthread.dll.a when searching for -lpthread
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/lib/libpthread.a when searching for -lpthread
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/lib\libpthread.a when searching for -lpthread
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/lib/libpthread.dll.a when searching for -lpthread
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/lib/libpthread.a when searching for -lpthread
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lpthread
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libgcc_s.a when searching for -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64\libgcc_s.a when searching for -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Win-builds/lib64/libgcc_s.a when searching for -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lgcc_s
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/libgcc.a when searching for -lgcc
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3\libgcc.a when searching for -lgcc
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/libgcc.a when searching for -lgcc
c:/win-builds/bin/../lib64/gcc/x86_64-w64-mingw32/4.8.3/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lgcc
collect2.exe: error: ld returned 1 exit status
Process terminated with status 1 (0 minute(s), 1 second(s))
7 error(s), 0 warning(s) (0 minute(s), 1 second(s))

1 个答案:

答案 0 :(得分：0)

这通常意味着您正在尝试使用 64 位编译器构建 32 位二进制文​​件。 MinGW-w64 附带的 Win-Builds（假设您使用的是最新版本 1.5）是 v3.3.0，使用 GCC-4.8.3。我记得，DWARF 的 SEH 和 MinGW-w64 变体（从 GCC-4.8.0 开始可用）都是单目标的，即它们只包含 64 位或32 位，但不是两者兼而有之。只有旧的 SJLJ 版本仍然是实际的双重目标，因此提供 -m32 会起作用。鉴于 64 位构建对您来说工作正常而 32 位构建失败这一事实，您似乎是前一种情况。您可能必须使用 32 位工具链来构建它，以便 32 位编译工作（i686-w64-mingw32-g++ 和 32 位库）。

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