sparc64: xnec2c fails to link with "relocation truncated to fit" errors

[KJ7LNW]

When building the Debian sparc64 package we get the following errors. I'm not sure how to fix this so if someone has a sparc64 system to test on then reply to this issue and maybe we can troubleshoot.

Maybe using -fPIC instead of -fpie will fix it, but i don't have a way to test. I'm guessing something like LDFLAGS=-fPIC or CFLAGS=-fPIC could fix the problem. If there is a solution then I would like to see a patch to configure.ac to detect when the flag is needed.

References:

• https://buildd.debian.org/status/package.php?p=xnec2c
• https://stackoverflow.com/a/10486230/14055985
• https://lists.debian.org/debian-sparc/2014/07/msg00037.html
• https://sourceforge.net/p/cdesktopenv/tickets/92/

Here is a snippet below, or the whole log is here:

/usr/bin/ld: warning: xnec2c has a LOAD segment with RWX permissions
xnec2c-resources.o: in function `xnec2c_get_resource':
./src/xnec2c-resources.c:51279:(.text+0x10): relocation truncated to fit: R_SPARC_GOT13 against `static_resource'
xnec2c-resources.o: in function `xnec2cresource_constructor':
./src/xnec2c-resources.c:51458:(.text.startup+0x10): relocation truncated to fit: R_SPARC_GOT13 against `static_resource'
xnec2c-resources.o: in function `xnec2cresource_destructor':
./src/xnec2c-resources.c:51463:(.text.exit+0x10): relocation truncated to fit: R_SPARC_GOT13 against `static_resource'
main.o: in function `opt_start_optimizer_thread':
./src/main.c:94:(.text+0x68): relocation truncated to fit: R_SPARC_GOT13 against symbol `main_window_builder' defined in .bss section in shared.o
main.o: in function `sig_handler':
./src/main.c:724:(.text+0x18c): relocation truncated to fit: R_SPARC_GOT13 against symbol `FORKED' defined in .bss section in shared.o
./src/main.c:725:(.text+0x1b0): relocation truncated to fit: R_SPARC_GOT13 against symbol `num_child_procs' defined in .bss section in shared.o
./src/main.c:725:(.text+0x1c4): relocation truncated to fit: R_SPARC_GOT13 against symbol `forked_proc_data' defined in .bss section in shared.o
./src/main.c:731:(.text+0x1fc): relocation truncated to fit: R_SPARC_GOT13 against symbol `input_fp' defined in .bss section in shared.o
./src/main.c:724:(.text+0x244): relocation truncated to fit: R_SPARC_GOT13 against symbol `FORKED' defined in .bss section in shared.o
./src/main.c:701:(.text+0x294): relocation truncated to fit: R_SPARC_GOT13 against symbol `FORKED' defined in .bss section in shared.o
./src/main.c:708:(.text+0x2a8): additional relocation overflows omitted from the output