Issue with GMP static linkage (and bundle)

[atlantis23]

> Am 22.09.2017 um 21:19 schrieb Daniele Ghisi <danieleghisi at gmail.com>:
> 
> Dear GMP users,
> 
> I need to link GMP statically to a project (written in C).
> 
> I can't seem to do it if the Mach-O Type of my target is set to "Bundle".
> No issues when it is set to "executable" or "static library".
> No issues when I use dynamic linkage either (with -lgmp)
> 
> I am on OS X 10.10.5, Xcode 7.2
> I have tried to install GMP manually or with homebrew, in both cases I
> still get the issue.
> 
> The specific error is
> "ld: illegal text-relocation to '___gmp_binvert_limb_table' in
> /usr/local/lib/libgmp.a(mp_minv_tab.o) from '___gmpn_divexact_1' in
> /usr/local/lib/libgmp.a(dive_1.o) for architecture x86_64
> clang: error: linker command failed with exit code 1 (use -v to see invocation)"


I don't get this error on my Mac (10.11.6, Xcode 7.3.1).
My test project is a System plug-in which links against a static libgmp.a (a homebrew built).
The project builds and works as expected.

I'm not a Mach-O expert, but your error message looks like your linker tries to relocate symbols (when linking the static gmp).

The header of my Mach-O executable looks like
otool -hv ...
Mach header
      magic cputype cpusubtype  caps    filetype ncmds sizeofcmds      flags
MH_MAGIC_64  X86_64        ALL  0x00      BUNDLE    19       2712   NOUNDEFS DYLDLINK TWOLEVEL

The code actually links to libgmp, for example
otool -tV ...
(__TEXT,__text) section
...
00000000000019b5	callq	0x1d50                  ## symbol stub for: ___gmpn_divexact_1

However, there is no relocation table,
otool -r
returns empty.

Are you sure you're using the correct gmp.h version for the linked libgmp.a? The error message refers to symbol
___gmpn_divexact_1
which is used in gmp 6.1.2 but was not present in older versions.

--vk