在windows上使用cmake编译FFTW(OpenMP）

Compiling FFTW (OpenMP) with cmake on windows

本文关键字：FFTW OpenMP 编译 cmake windows      更新时间：2023-10-16

我正试图在我的windows机器上安装带有cmake的FFTW。我下载了最新版本的源文件，并首先使用以下选项运行cmake：

mkdir build && cd build
cmake --DBUILD_TESTS=False -DENABLE_FLOAT=On ..
cmake --build . --config Release

这在Visual Studio 2017和2019上都很好。然而，当我尝试用OpenMP编译代码时，

cmake --DBUILD_TESTS=False -DENABLE_FLOAT=On -DENABLE_OPENMP=On ..
cmake --build . --config Release

我收到一大堆链接错误：

[...]
ct.obj : error LNK2001: unresolved external symbol fftwf_ops_zero [C:Usersjha1Desktopfftw-3.3.8.tarfftw-3.3.8buildfftw3f_omp.vcxproj]
dft-vrank-geq1.obj : error LNK2001: unresolved external symbol fftwf_ops_zero [C:Usersjha1Desktopfftw-3.3.8.tarfftw-3.3.8buildfftw3f_omp.vcxproj]
hc2hc.obj : error LNK2001: unresolved external symbol fftwf_ops_zero [C:Usersjha1Desktopfftw-3.3.8.tarfftw-3.3.8buildfftw3f_omp.vcxproj]
[...]

然而，看起来cmake能够在配置阶段找到OpenMP，所以我不确定是什么导致了这个问题。

[...]
-- Found OpenMP_C: -openmp (found version "2.0")
-- Found OpenMP_CXX: -openmp (found version "2.0")
-- Found OpenMP: TRUE (found version "2.0")
[...]

注意，这在我的带有gcc9的linux机器上运行得很好。

我能够使用MinGW-W64在MSYS2中使用configure在不同版本中构建fftw-3.3.8(版本http://winlibs.com)像这样：

INSTALLPREFIX=/usr/local
BUILDPLATFORM=i686-w64-mingw32
RUNPLATFORM=i686-w64-mingw32
BUILDPLATFORM=x86_64-w64-mingw32
RUNPLATFORM=x86_64-w64-mingw32
mkdir -p build_single build_longdouble build_quad build_standard &&
cd build_single &&
#../configure --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --with-our-malloc16 --enable-threads --with-combined-threads --enable-portable-binary --enable-sse2 LDFLAGS="-Wl,--enable-auto-import" &&
#../configure --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-single --enable-sse --enable-sse2 --enable-avx LDFLAGS="-Wl,--enable-auto-import" &&
../configure --cache-file=../config.cache --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-single --enable-sse --enable-sse2 --enable-avx LDFLAGS="-Wl,--enable-auto-import" &&
cd .. &&
cd build_longdouble &&
#../configure --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-long-double LDFLAGS="-Wl,--enable-auto-import" &&
../configure --cache-file=../config.cache --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-long-double LDFLAGS="-Wl,--enable-auto-import" &&
cd .. &&
#cd build_quad &&
##../configure --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-quad-precision LDFLAGS="-Wl,--enable-auto-import" &&
#../configure --cache-file=../config.cache --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-quad-precision LDFLAGS="-Wl,--enable-auto-import" &&
## fix building DLLs
#mv libtool libtool.bak &&
#sed -e "s/(allow_undefined=)yes/1no/" libtool.bak > libtool &&
#cd .. &&
cd build_standard &&
#../configure --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-sse2 --enable-avx LDFLAGS="-Wl,--enable-auto-import" &&
../configure --cache-file=../config.cache --prefix=$INSTALLPREFIX --build=$BUILDPLATFORM --host=$RUNPLATFORM --enable-shared --enable-static --disable-alloca --with-our-malloc16 --enable-threads --with-combined-threads --enable-sse2 --enable-avx LDFLAGS="-Wl,--enable-auto-import" &&
cd .. &&
( make -Cbuild_single || make -Cbuild_single LIBS="-lpthread" ) &&
make -Cbuild_single install-strip &&
( make -Cbuild_longdouble || make -Cbuild_longdouble LIBS="-lpthread" ) &&
make -Cbuild_longdouble install-strip &&
#( make -Cbuild_quad || make -Cbuild_quad LIBS="-lpthread" ) &&
#make -Cbuild_quad install-strip &&
( make -Cbuild_standard || make -Cbuild_standard LIBS="-lpthread" ) &&
make -Cbuild_standard install-strip &&
# fix absolute link in .cmake file(s)
sed -i -e "s?$(echo $INSTALLPREFIX|sed -e "s?^/([a-zA-Z])/?1:/?")?${CMAKE_CURRENT_LIST_FILE}/../../../..?g" $INSTALLPREFIX/lib/cmake/fftw3/*Config.cmake &&
echo Done

如果你不想要所有这些版本，你可以坚持使用与build_standard相关的行。

没有像这样构建的OpenMP问题。

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