intel 컴파일러로 fftw 설치하기
tar zxvf fftw-*
cd fftw-*
export CC=icc
export CPP=icc
export CFLAGS=’-O3 -tpp7 -axN -xN’
export CPPFLAGS=’-O3 -tpp7 -axN -xN’
./configure : double-precision
for single-precision: ./configure –enable-float –enable-type-prefix –enable-shared
for double-precision: ./configure –enable-long-double –enable-type-prefix –enable-shared
make install
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