环境
- windows 10 64位 专业版 1607（内部版本 14393.1715）
- mingw 多年前装的版本，但使用在线安装器 到了最新
- nuwen mingw 下载地址
- TDM-GCC-64 下载地址
- mingw-w64 本来想也测下这个的，但是没下载动，算了。。。
mingw gcc -v
specs
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=d:/mingw/bin/../libexec/gcc/mingw32/6.3.0/lto-wrapper.exe
mingw32
../src/gcc-6.3.0/configure --build=x86_64-pc-linux-gnu --host=mingw32 --target=mingw32 --with-gmp=/mingw --with-mpfr --with-mpc=/mingw --with-isl=/mingw --prefix=/mingw --disable-win32-registry --with-arch=i586 --with-tune=generic --enable-languages=c,c++,objc,obj-c++,fortran,ada --with-pkgversion='MinGW.org GCC-6.3.0-1' --enable-static --enable-shared --enable-threads --with-dwarf2 --disable-sjlj-exceptions --enable-version-specific-runtime-libs --with-libiconv-prefix=/mingw --with-libintl-prefix=/mingw --enable-libstdcxx-debug --enable-libgomp --disable-libvtv --enable-nls
win32
gcc 6.3.0 (MinGW.org GCC-6.3.0-1)
TDM-GCC-64 gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=D:/TDM-GCC-64/bin/../libexec/gcc/x86_64-w64-mingw32/5.1.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../../../src/gcc-5.1.0/configure --build=x86_64-w64-mingw32 --enable-targets=all --enable-languages=ada,c,c++,fortran,lto,objc,obj-c++ --enable-libgomp --enable-lto --enable-graphite --enable-cxx-flags=-DWINPTHREAD_STATIC --disable-build-with-cxx --disable-build-poststage1-with-cxx --enable-libstdcxx-debug --enable-threads=posix --enable-version-specific-runtime-libs --enable-fully-dynamic-string --enable-libstdcxx-threads --enable-libstdcxx-time --with-gnu-ld --disable-werror --disable-nls --disable-win32-registry --prefix=/mingw64tdm --with-local-prefix=/mingw64tdm --with-pkgversion=tdm64-1 --with-bugurl=http://tdm-gcc.tdragon.net/bugs
Thread model: posix
gcc version 5.1.0 (tdm64-1)
nuwen gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=d:/mingw-nuwen-15.1/bin/../libexec/gcc/x86_64-w64-mingw32/7.2.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../src/configure --enable-languages=c,c++ --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --disable-multilib --prefix=/c/temp/gcc/dest --with-sysroot=/c/temp/gcc/dest --disable-libstdcxx-pch --disable-libstdcxx-verbose --disable-nls --disable-shared --disable-win32-registry --with-tune=haswell
Thread model: win32
gcc version 7.2.0 (GCC)
简单测试
先创建一个简单的c文件：
echo void main(){} > simple.c
然后使用不同的mingw环境来执行gcc进行编译链接，分别使用默认参数、-m32、-m64做测试。
mingw
-
gcc simple.c -o simple-gcc.exe无输出，生成32位exe -
gcc simple.c -o simple-gcc-m32.exe -m32无输出，生成32位exe -
gcc simple.c -o simple-gcc-m64.exe -m64命令直接出错
simple.c:1:0: 对不起，尚未实现：未编译入对 64 位模式的支持
void main(){}
nuwen
-
gcc simple.c -o simple-nuwen.exe无输出，生成64位exe -
gcc simple.c -o simple-nuwen-m64.exe -m64无输出，生成64位exe -
gcc simple.c -o simple-nuwen-m32.exe -m32链接出错
d:/mingw-nuwen-15.1/bin/../lib/gcc/x86_64-w64-mingw32/7.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible d:/mingw-nuwen-15.1/bin/../lib/gcc/x86_64-w64-mingw32/7.2.0/../../../../x86_64-w64-mingw32/lib/libmingw32.a when searching for -lmingw32
...-lgcc、-lmoldname、-lmingwex、-lmsvcrt、-ladvapi32、-lshell32、-lkernel32...
x86_64-w64-mingw32/7.2.0/../../../../x86_64-w64-mingw32/lib/libmsvcrt.a when searching for -lmsvcrt
d:/mingw-nuwen-15.1/bin/../lib/gcc/x86_64-w64-mingw32/7.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lmsvcrt
collect2.exe: error: ld returned 1 exit status
TDM-GCC-64
-
gcc simple.c -o simple-tdm.exe无输出，生成64位exe -
gcc simple.c -o simple-tdm-m64.exe -m64无输出，生成64位exe -
gcc simple.c -o simple-tdm-m32.exe -m32无输出，生成32位exe
某项目用到了glibc，所以使用glibc再测一次
使用glibc 2.28版本，下载地址
上面编译失败的就不再尝试了，只尝试上面成功过的。
使用测试代码：
#include <glib.h>
void main() {
char* buffer = (char *)g_malloc(100);
g_free(buffer);
}
MinGW -m32
gcc test.c -ID:\VC_INCLUDE\glibc-2.28.8\include\glib-2.0 -ID:\VC_INCLUDE\glibc-2.28.8\lib\glib-2.0\include D:\VC_INCLUDE\glibc-2.28.8\bin\libglib-2.0-0.dll -o test-gcc.exe
====>
编译成功，生成32位exe
TDM-GCC-64 -m32
gcc test.c -ID:\VC_INCLUDE\glibc-2.28.8\include\glib-2.0 -ID:\VC_INCLUDE\glibc-2.28.8\lib\glib-2.0\include D:\VC_INCLUDE\glibc-2.28.8\bin\libglib-2.0-0.dll -o test-tdm-m32.exe -m32
====>
编译成功，生成32位exe
TDM-GCC-64 不使用-m32 链接出错(没有glibc的64位lib)
gcc test.c -ID:\VC_INCLUDE\glibc-2.28.8\include\glib-2.0 -ID:\VC_INCLUDE\glibc-2.28.8\lib\glib-2.0\include D:\VC_INCLUDE\glibc-2.28.8\bin\libglib-2.0-0.dll -o test-tdm.exe
====>
C:\Users\terry\AppData\Local\Temp\ccA3V4Ba.o:test.c:(.text+0x13): undefined reference to `g_malloc'
C:\Users\terry\AppData\Local\Temp\ccA3V4Ba.o:test.c:(.text+0x23): undefined reference to `g_free'
collect2.exe: error: ld returned 1 exit status
nuwen 链接出错 (没有glibc的64位lib)
gcc test.c -ID:\VC_INCLUDE\glibc-2.28.8\include\glib-2.0 -ID:\VC_INCLUDE\glibc-2.28.8\lib\glib-2.0\include D:\VC_INCLUDE\glibc-2.28.8\bin\libglib-2.0-0.dll -o test-nuwen.exe
====>
C:\Users\terry\AppData\Local\Temp\ccedeuKo.o:test.c:(.text+0x13): undefined reference to `g_malloc'
C:\Users\terry\AppData\Local\Temp\ccedeuKo.o:test.c:(.text+0x23): undefined reference to `g_free'
collect2.exe: error: ld returned 1 exit status
总结
反正TDM-GCC-64这个最好使，默认下载下来就支持32位和64位的gcc编译，其它的估计都得自己再折腾。但nuwen的优势是版本更新快，自带的3方库最多。
