Sorry, it's complaining about the ccall,not the cglobal.
I has this code inside of init.
ccall((:pari_init, "$pkgdir/local/lib/libpari"), Void, (Int, Int),
3000000000, 10000)
It looks like it is complaining about the string interpolation. I guess it
needs to know the exact string at compile time as a constant, but it can't
know $pkgdir (which is set earlier) until runtime. Or something.
Bill.
On 18 September 2015 at 13:14, Bill Hart <goodwillh...@googlemail.com>
wrote:
> Hi,
>
> I'm actually trying to precompile our library. This seems to necessitate
> putting some of the initialisation code we had in an __init__ function.
>
> But I'm having problems with the cglobal syntax.
>
> According to the documentation, it takes a tuple with exactly the same
> format as ccall.
>
> But this works inside __init__:
>
> ccall((:pari_init, "$pkgdir/local/lib/libpari"), Void, (Int, Int),
> 3000000000, 10000)
>
> But this does not:
>
> global avma = cglobal((:avma, "$pkgdir/local/lib/libpari"), Ptr{Ptr{Int}})
>
> The complaint is below. Can someone help me?
>
> Note that if I change that string to just :libpari, it complains that
> libpari is not found. This is despite me dlopen'ing libpari earlier in
> __init__.
>
> I have also set Libdl.DL_LOAD_PATH (I am on Linux) in __init__.
>
> This all works fine if I put the code outside of __init__, but then I
> can't precompile. As soon as I put it inside __init__, it no longer seems
> to work.
>
> Bill.
>
> ERROR: LoadError: InitError: TypeError: __init__: in ccall: first argument
> not a pointer or valid constant expression, expected Ptr{T}, got
> Tuple{Symbol,ASCIIString}
> in __init__ at /home/wbhart/.julia/v0.4/Nemo/src/Nemo.jl:61
> in _require_from_serialized at loading.jl:84
> in require at ./loading.jl:218
> in include at ./boot.jl:260
> in include_from_node1 at ./loading.jl:271
> in process_options at ./client.jl:308
> in _start at ./client.jl:411
> during initialization of module Nemo
> while loading /home/wbhart/.julia/v0.4/Nemo/test/runtests.jl, in
> expression starting on line 1
> ================================[ ERROR: Nemo
> ]=================================
>
> failed process: Process(`/home/wbhart/julia/usr/bin/julia
> --check-bounds=yes --code-coverage=none --color=yes
> /home/wbhart/.julia/v0.4/Nemo/test/runtests.jl`, ProcessExited(1)) [1]
>
>
> ================================================================================
> ERROR: Nemo had test errors
> in error at ./error.jl:21
> in test at pkg/entry.jl:753
> in anonymous at pkg/dir.jl:31
> in cd at file.jl:22
> in cd at pkg/dir.jl:31
> in test at pkg.jl:71
>
>
