CODEWITHSUNDEEP
statichyperlinkgfortran
Patrik
Patrik

Reputation: 855

On gfortran static link and undefined references

I need to statically link my application which uses libraries like csparse, gsl, pthread, lapack and blas. The last two need also libgfortran. So my command is

gcc -o main bunch_of_object_files.o -fopenmp -static -lcsparse -lgsl -lgslcblas -lpthread -llapack -lblas -lm -lgfortran

and the output is 

/usr/lib/gcc/x86_64-linux-gnu/4.4.3/libgfortran.a(fpu.o): In function `_gfortrani_set_fpu':
(.text+0xa): undefined reference to `fedisableexcept'
/usr/lib/gcc/x86_64-linux-gnu/4.4.3/libgfortran.a(fpu.o): In function `_gfortrani_set_fpu':
(.text+0x56): undefined reference to `feenableexcept'
/usr/lib/gcc/x86_64-linux-gnu/4.4.3/libgfortran.a(fpu.o): In function `_gfortrani_set_fpu':
(.text+0x6e): undefined reference to `feenableexcept'
/usr/lib/gcc/x86_64-linux-gnu/4.4.3/libgfortran.a(fpu.o): In function `_gfortrani_set_fpu':
(.text+0x86): undefined reference to `feenableexcept'
/usr/lib/gcc/x86_64-linux-gnu/4.4.3/libgfortran.a(fpu.o): In function `_gfortrani_set_fpu':
(.text+0xb6): undefined reference to `feenableexcept'
/usr/lib/gcc/x86_64-linux-gnu/4.4.3/libgfortran.a(fpu.o): In function `_gfortrani_set_fpu':
(.text+0x4a): undefined reference to `feenableexcept'
collect2: ld returned 1 exit status

but it works if I link using gfortran instead of gcc. Why?

Upvotes: 1

Views: 3016

Answers (1)

Hristo Iliev
Hristo Iliev

Reputation: 74485

Put -lm after -lgfortran. When static linking the ordering is important.

Upvotes: 4

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