If there's no 'libgmp.a' for the linker to find then one would expect that it's finding the shared library. However, on my Win32 box, the shared library that gets created is 'libgmp-3.dll' so I need to change the 'LIBS' entry in the Math::GMP 'Makefile.PL' from 
'LIBS'    => ['-lgmp'],

[download]
to: 
'LIBS'    => ['-lgmp-3'],

[download]
Probably worth checking out the name of the GMP shared library and statisfying yourself that '-lgmp' will allow the linker to find it. If your shared library is named 'libgmp-3.so' then '-lgmp' should not enable the linker to find it ... in which case the linker is probably still finding a 'libgmp.a' somewhere.

On Win32 I also need to specify the location of the shared library, so the 'LIBS' entry actually becomes something like:
'LIBS'    => ['-L/my_dll_folder -lgmp-3'],

[download]
However, if your gmp shared library is in a location where the linker looks by default, then you won't have to bother with the '-L' switch.

Don't be too stressed about getting this sorted out in a hurry ... it could yet be nothing more than a wild goose chase :-)

Cheers,
Rob

In reply to Re^10: Math::GMP won't install on Darwin by syphilis
in thread Math::GMP won't install on Darwin by jkeenan1

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