OpenMP library specification
i am new to open mp and i tried an sample program from the official site
#include <omp.h>
#include <stdio.h>
int main() {
#pragma omp parallel
printf("Hello from thread %d, nthreads %d\n", omp_get_thread_num(), 开发者_C百科omp_get_num_threads());
}
and i have set the library in the eclipse as libgomp in project Properties->GCC c++ linker-
but the program say /usr/bin/ld: cannot find -llibgomp
can i know where i am wrong
Try linking with gomp
instead of libgomp
: library names must be passed to the linker without the lib
prefix, which it adds automatically. Hence the error, it is trying to find liblibgomp
. Don't forget the compiler flag -fopenmp
, otherwise the OpenMP pragmas will simply be ignored.
Add gomp to GCC C++ Linker->Libraries. Then add −fopenmp
to the Miscellaneous flags for GCC C++ Compiler, GCC C Compiler, and GCC C++ Linker
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