Hi,
1. I tried to cmpile rective extensions (rxcpp) https://github.com/Reactive-Extensions/RxCpp in mingw from msys2.
2. I use build command: cmake -G"Unix Makefiles" -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_BUILD_TYPE=Release -B. ../CMake
3. during linking (in make phase) one of test program I got a lot of multiple definition
4. In ubuntu 14.04 (gcc 4.8) linking works
5. Other test programs from rxcpp link ok
6. Maybe someone have idea what to do
Regards,
Mariusz
[ 95%] Building CXX object CMakeFiles/rxcppv2_test.dir/D_/tmp/RX/RxCpp/Rx/v2/test/operators/window.cpp.obj [ 97%] Building CXX object CMakeFiles/rxcppv2_test.dir/D_/tmp/RX/RxCpp/Rx/v2/test/operators/zip.1.cpp.obj [100%] Building CXX object CMakeFiles/rxcppv2_test.dir/D_/tmp/RX/RxCpp/Rx/v2/test/operators/zip.2.cpp.obj
Linking CXX executable rxcppv2_test.exe
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x0): multiple definition of .weak.__ZGVN5rxcpp10schedulers9immediate8instanceE.__ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv'
CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x0): first defined here
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x8): multiple definition of.weak.ZGVN5rxcpp10schedulers10event_loop8instanceE.ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv'
CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x8): first defined here
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x10): multiple definition of .weak.__ZGVN5rxcpp10schedulers10new_thread8instanceE.__ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv'
CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x10): first defined here
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x18): multiple definition of.weak.ZGVN5rxcpp10schedulers14current_thread8instanceE.ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv'
CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x18): first defined here
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x20): multiple definition of `.weak._
Hi,
1. I tried to cmpile rective extensions (rxcpp) https://github.com/Reactive-Extensions/RxCpp in mingw from msys2.
2. I use build command: cmake -G"Unix Makefiles" -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_BUILD_TYPE=Release -B. ../CMake
3. during linking (in make phase) one of test program I got a lot of multiple definition
4. In ubuntu 14.04 (gcc 4.8) linking works
5. Other test programs from rxcpp link ok
6. Maybe someone have idea what to do
Regards,
Mariusz
[ 95%] Building CXX object CMakeFiles/rxcppv2_test.dir/D_/tmp/RX/RxCpp/Rx/v2/test/operators/window.cpp.obj
[ 97%] Building CXX object CMakeFiles/rxcppv2_test.dir/D_/tmp/RX/RxCpp/Rx/v2/test/operators/zip.1.cpp.obj
[100%] Building CXX object CMakeFiles/rxcppv2_test.dir/D_/tmp/RX/RxCpp/Rx/v2/test/operators/zip.2.cpp.obj
Linking CXX executable rxcppv2_test.exe
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x0): multiple definition of
.weak.__ZGVN5rxcpp10schedulers9immediate8instanceE.__ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv' CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x0): first defined here CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x8): multiple definition of.weak.ZGVN5rxcpp10schedulers10event_loop8instanceE.ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv'CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x8): first defined here
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x10): multiple definition of
.weak.__ZGVN5rxcpp10schedulers10new_thread8instanceE.__ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv' CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x10): first defined here CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x18): multiple definition of.weak.ZGVN5rxcpp10schedulers14current_thread8instanceE.ZN5rxcpp12subscription23base_subscription_state11unsubscribeEv'CMakeFiles/rxcppv2_test.dir/objects.a(observer.cpp.obj):observer.cpp:(.bss+0x18): first defined here
CMakeFiles/rxcppv2_test.dir/objects.a(subscription.cpp.obj):subscription.cpp:(.bss+0x20): multiple definition of `.weak._
///
$ gcc -v
Using built-in specs.
COLLECT_GCC=D:\msys2_64\mingw32\bin\gcc.exe
COLLECT_LTO_WRAPPER=D:/msys2_64/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/lto-wrapper.exe
Target: i686-w64-mingw32
Configured with: ../gcc-4.9.2/configure --prefix=/mingw32 --with-local-prefix=/mingw32/local --build=i686-w64-mingw32 --host=i686-w64-mingw32 --target=i686-w64-mingw32 --with-native-system-header-dir=/mingw32/i686-w64-mingw32/include --libexecdir=/mingw32/lib --with-gxx-include-dir=/mingw32/include/c++/4.9.2 --enable-bootstrap --with-arch=i686 --with-tune=generic --enable-languages=c,lto,c++,objc,obj-c++,fortran,ada --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-time=yes --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-cloog-backend=isl --enable-version-specific-runtime-libs --disable-cloog-version-check --disable-isl-version-check --enable-lto --enable-libgomp --disable-multilib --enable-checking=release --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw32 --with-mpfr=/mingw32 --with-mpc=/mingw32 --with-isl=/mingw32 --with-cloog=/mingw32 --with-pkgversion='Rev5, Built by MSYS2 project' --with-bugurl=http://sourceforge.net/projects/msys2 --with-gnu-as --with-gnu-ld --disable-sjlj-exceptions --with-dwarf2
Thread model: posix
gcc version 4.9.2 (Rev5, Built by MSYS2 project)
///
For MSYS, you'll need
The compilers (
gccandg++) will be automatically found, no need to specify them.Unfortunately, I can't seem to get it to work on my Arch Linux install nor my MSYS2 and run into this error:
Thank You for answer.
I check this new cmake call but link error is the same:(
The compilers are detected as You describe.
To initialize catch.hpp You need
git clone --recursive <url>
or
git submodule init and then git submodule update
as described here: https://rxcpp.codeplex.com/discussions/552510#post1275356
Regards,
Mariusz