Why don't programs compiled with 64-bit MinGW g++ work on my 64-bit PC? - gcc

Question

I am using Cygwin on 64-bit Windows 8.1.
I wanted to make native windows executables inside the Cygwin environment (i.e. I didn't want to deal with cygwin dll issues). I saw Cygwin had minGW packages so I downloaded the
i686-pc-mingw32-gcc
x86_64-w64-mingw32-gcc
packages. From this post I've gathered the i686 one is 32-bit and the x86_64 one is 64-bit.
I used both the i686 and x86_64 version of g++ to compile a simple hello world program and both compiled without error.
The executable compiled by the i686 works as expected.
My problem: When I try to run the executable compiled by the x86_64 version, I get an windows error box saying "The application was unable to start correctly (0x000007b). Click OK to close the application."
I am very confused by this. Why does the 32-bit compiler work and the 64-bit compiler not work on my system?
In case it helps, here the stuff the x86_64 compiler is doing when I call it
$ x86_64-w64-mingw32-g++ test.cpp -o dd -v
Using built-in specs.
COLLECT_GCC=x86_64-w64-mingw32-g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: /cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/mingw64- x86_64-gc c-4.9.2-1.x86_64/src/gcc-4.9.2/configure --srcdir=/cygdrive/i/szsz/tmpp/cygwin64 /mingw64-x86_64/mingw64-x86_64-gcc-4.9.2-1.x86_64/src/gcc-4.9.2 --prefix=/usr -- exec-prefix=/usr --localstatedir=/var --sysconfdir=/etc --docdir=/usr/share/doc/ mingw64-x86_64-gcc --htmldir=/usr/share/doc/mingw64-x86_64-gcc/html -C --build=x 86_64-pc-cygwin --host=x86_64-pc-cygwin --target=x86_64-w64-mingw32 --without-li biconv-prefix --without-libintl-prefix --with-sysroot=/usr/x86_64-w64-mingw32/sy s-root --with-build-sysroot=/usr/x86_64-w64-mingw32/sys-root --disable-multilib --disable-win32-registry --enable-languages=c,ada,c++,fortran,lto,objc,obj-c++ - -enable-fully-dynamic-strings --enable-graphite --enable-libgomp --enable-libqua dmath --enable-libquadmath-support --enable-libssp --enable-version-specific-run time-libs --with-dwarf2 --with-gnu-ld --with-gnu-as --with-tune=generic --with-c loog-include=/usr/include/cloog-isl --with-system-zlib --libexecdir=/usr/lib
Thread model: win32
gcc version 4.9.2 (GCC)
COLLECT_GCC_OPTIONS='-o' 'dd.exe' '-v' '-shared-libgcc' '-mtune=generic' '- march =x86-64'
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/cc1plus.exe -quiet -v -U_REENTRANT test.c pp -quiet -dumpbase test.cpp -mtune=generic -march=x86-64 -auxbase test -version -o /tmp/ccKIncrs.s
GNU C++ (GCC) version 4.9.2 (x86_64-w64-mingw32)
compiled by GNU C version 4.9.2, GMP version 6.0.0, MPFR version 3.1.2-p 11, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/x86_64-w64-mingw32/sys- root/usr/local/inclu de"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-w64- mingw32/4.9.2/../../../. ./x86_64-w64-mingw32/include"
\#include "..." search starts here:
\#include <...> search starts here:
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++/x86_64-w64-mingw32
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++/backward
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/include
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/include-fixed
/usr/x86_64-w64-mingw32/sys-root/mingw/include
End of search list.
GNU C++ (GCC) version 4.9.2 (x86_64-w64-mingw32)
compiled by GNU C version 4.9.2, GMP version 6.0.0, MPFR version 3.1.2-p 11, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: aee7f7b7ca14852762daf4c41db46c26
COLLECT_GCC_OPTIONS='-o' 'dd.exe' '-v' '-shared-libgcc' '-mtune=generic' '- march =x86-64'
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/../../../../x86_64-w64- mingw32/bin/as.exe -v -o /tmp/ccSHmwxw.o /tmp/ccKIncrs.s
GNU assembler version 2.25.51 (x86_64-w64-mingw32) using BFD version (GNU Binuti ls) 2.25.51.20150320
COMPILER_PATH=/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/:/usr/lib/gcc/x86_64-w64-min gw32/4.9.2/:/usr/lib/gcc/x86_64-w64-mingw32/:/usr/lib/gcc/x86_64-w64-mingw32/4.9 .2/:/usr/lib/gcc/x86_64-w64-mingw32/:/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/../.. /../../x86_64-w64-mingw32/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/:/usr/lib/gcc/x86_64-w64- ming w32/4.9.2/../../../../x86_64-w64-mingw32/lib/../lib/:/usr/x86_64-w64-mingw32/sys -root/mingw/lib/../lib/:/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/../../../../x86_64 -w64-mingw32/lib/:/usr/x86_64-w64-mingw32/sys-root/mingw/lib/
COLLECT_GCC_OPTIONS='-o' 'dd.exe' '-v' '-shared-libgcc' '-mtune=generic' '- march =x86-64'
/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/collect2.exe -plugin /usr/lib/gcc/x86_64- w64-mingw32/4.9.2/cyglto_plugin.dll -plugin-opt=/usr/lib/gcc/x86_64-w64-mingw32/ 4.9.2/lto-wrapper.exe -plugin-opt=-fresolution=/tmp/ccaaJ5U7.res -plugin-opt=-pa ss-through=-lmingw32 -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through =-lgcc -plugin-opt=-pass-through=-lmoldname -plugin-opt=-pass-through=-lmingwex -plugin-opt=-pass-through=-lmsvcrt -plugin-opt=-pass-through=-ladvapi32 -plugin- opt=-pass-through=-lshell32 -plugin-opt=-pass-through=-luser32 -plugin-opt=-pass -through=-lkernel32 -plugin-opt=-pass-through=-lmingw32 -plugin-opt=-pass-throug h=-lgcc_s -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lmoldname - plugin-opt=-pass-through=-lmingwex -plugin-opt=-pass-through=-lmsvcrt --sysroot= /usr/x86_64-w64-mingw32/sys-root -m i386pep -Bdynamic -o dd.exe /usr/x86_64-w64- mingw32/sys-root/mingw/lib/../lib/crt2.o /usr/x86_64-w64-mingw32/sys-root/mingw/ lib/../lib/crtbegin.o -L/usr/lib/gcc/x86_64-w64-mingw32/4.9.2 -L/usr/lib/gcc/x86 _64-w64-mingw32/4.9.2/../../../../x86_64-w64-mingw32/lib/../lib -L/usr/x86_64-w6 4-mingw32/sys-root/mingw/lib/../lib -L/usr/lib/gcc/x86_64-w64-mingw32/4.9.2/../. ./../../x86_64-w64-mingw32/lib -L/usr/x86_64-w64-mingw32/sys-root/mingw/lib /tmp /ccSHmwxw.o -lstdc++ -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt -ladv api32 -lshell32 -luser32 -lkernel32 -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex -lmsvcrt /usr/x86_64-w64-mingw32/sys-root/mingw/lib/../lib/default-manifest.o / usr/x86_64-w64-mingw32/sys-root/mingw/lib/../lib/crtend.o
EDIT: Did some more testing. When I made a program more complex than hello world (I used a #include ) the i686 version of the executable failed as it was missing some GCC related dll. When I add -static-libgcc -static-libstdc++, both version of the compilers work.
This leads me to conclude stuffs messed up with my linkers and DLLs. I don't know too much about this :(