Hi, I creat my dynamic libray test.so on Linux, I can use it in my Intel Fortran code. But when I use it in Julia in ccall, I get error: undefined symbol. I have export LD_LIBRARY=$PWD. Any idea about this error? Thanks!

https://stackoverflow.com/questions/34732/how-do-i-list-the-symbols-in-a-so-file Check the symbol names actually exported by the library, make sure you are have it spelled right.

Which symbol is undefined? Is it in test.so or in a library that test.so depends on?

Hi John, it’s a symbol in a library that test.so depends on. John Lapeyre via JuliaLang < julialang@discoursemail.com > 于2020年6月11日周四上午7:19写道：

Hi, the problem is when I generated test.so, I forget the flag -L. Thanks for you help! Zhang Wei < zhangweiuio@gmail.com > 于2020年6月11日周四上午8:16写道：

[image] Ccall to libgsl fails General Usage Hello, I am trying to use ccall in julia for the first time and I can’t make a simple call to libgsl: ccall((:gsl_sf_gamma_inc_Q, :libgsl), Cdouble, (Cdouble, Cdouble), 0.2, 0.2) returns: ERROR: LoadError: error compiling anon…

Undefined symbol

General Usage

jlapeyre June 11, 2020, 11:44am 6

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Undefined symbol

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