Build is broken for 32 bit targets

[mfrischknecht]

Disclaimer: I'm not actually relying on this (and it seems there aren't many people that do, given that the error went unnoticed for 2 years), but simply opening a ticket so I have some documentation I can link to in a ZHF PR (marking nix-ld as broken for 32 bit targets for now).

nix-ld doesn't build for 32 bit targets since the move to nolibc, as UINTPTR_MAX is #defined as nothing:

nix-ld/src/nix-ld.c

Lines 20 to 21 in 6ac25c2

	#if PTR_SIZE == 4
	#define UINTPTR_MAX

This leads to compilation errors, as the assignment on line 127 later on results in a missing expression after macro expansion, e.g.:
Hydra build for i686: https://hydra.nixos.org/build/241835411#tabs-summary
Log: https://hydra.nixos.org/build/241835411/nixlog/2

[...]
Found ninja-1.11.1 at /nix/store/qzrhb4pkv61dfmax136wjx2g2mfq64ll-ninja-1.11.1/bin/ninja
mesonConfigurePhase: enabled\ parallel\ building
building
build flags: -j2
[1/8] Compiling C object test/libexample-lib.so.p/example-lib.c.o
[2/8] Linking target test/libexample-lib.so
[3/8] Compiling C object nix-ld.p/src_nix-ld.c.o
FAILED: nix-ld.p/src_nix-ld.c.o 
gcc -Inix-ld.p -I. -I.. -I../vendor/nolibc -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -ffast-math -fno-common -fdiagnostics-show-option -fno-strict-aliasing -fvisibility=hidden -fcf-protection --param=ssp-buffer-size=4 -fPIE -fno-asynchronous-unwind-tables -fno-ident -ffreestanding -static-pie -DPTR_SIZE=4 -MD -MQ nix-ld.p/src_nix-ld.c.o -MF nix-ld.p/src_nix-ld.c.o.d -o nix-ld.p/src_nix-ld.c.o -c ../src/nix-ld.c
../src/nix-ld.c: In function 'total_mapping_size':
../src/nix-ld.c:127:32: error: expected expression before ';' token
  127 |   size_t addr_min = UINTPTR_MAX;
      |                                ^
[4/8] Generating symbol file test/libexample-lib.so.p/libexample-lib.so.symbols
ninja: build stopped: subcommand failed.

[Mic92]

fixed in https://github.com/Mic92/nix-ld/releases/tag/1.2.3