RTEMS Source Builder | gettext doesn't compile with host gcc 15 (#135)

[Christian Mauderer (@c-mauderer)]

Christian Mauderer created an issue: https://gitlab.rtems.org/rtems/tools/rtems-source-builder/-/issues/135



## Summary

I try to build 7/rtems-arm with the current RSB (e4ba1611f6d47041a0b9be59827b1428c4aad9a0) with the additional gmp patch from #134 / !190. Building gettext doesn't work with a host gcc version 15. I get the following error in the log:

```
libtool: compile:  gcc -O2 -g -pipe -I/home/christian/rtems/rtems-simulation-env/external/rtems-source-builder/rtems/build/tmp/sb-1000/devel/qemu-xilinx/home/christian/rtems/rtems-simulation-env/rtems-install/7/include -I/home/christian/rtems/rtems-simulation-env/external/rtems-source-builder/rtems/build/tmp/sb-1000-internal/include -c -DLOCALEDIR=\"/home/christian/rtems/rtems-simulation-env/rtems-install/7/share/locale\" -DLOCALE_ALIAS_PATH=\"/home/christian/rtems/rtems-simulation-env/rtems-install/7/share/locale\" -DLIBDIR=\"/home/christian/rtems/rtems-simulation-env/rtems-install/7/lib\" -DBUILDING_LIBINTL -DBUILDING_DLL -DIN_LIBINTL -DENABLE_RELOCATABLE=1 -DIN_LIBRARY -DINSTALLDIR=\"/home/christian/rtems/rtems-simulation-env/rtems-install/7/lib\" -DNO_XMALLOC -Dset_relocation_prefix=libintl_set_relocation_prefix -Drelocate=libintl_relocate -DDEPENDS_ON_LIBICONV=1 -DHAVE_CONFIG_H -I. -I../../../gettext-0.18.3.1/gettext-runtime/intl -I.. -g -O2 -fvisibility=hidden ../../../gettext-0.18.3.1/gettext-runtime/intl/explodename.c -o explodename.o >/dev/null 2>&1
In file included from ../../../gettext-0.18.3.1/gettext-runtime/intl/dcigettext.c:92:
../../../gettext-0.18.3.1/gettext-runtime/intl/gettextP.h: In function 'SWAP':
../../../gettext-0.18.3.1/gettext-runtime/intl/gettextP.h:118:1: warning: old-style function definition [-Wold-style-definition]
  118 | SWAP (i)
      | ^~~~
../../../gettext-0.18.3.1/gettext-runtime/intl/dcigettext.c: At top level:
../../../gettext-0.18.3.1/gettext-runtime/intl/dcigettext.c:147:7: error: conflicting types for 'getcwd'; have 'char *(void)'
  147 | char *getcwd ();
      |       ^~~~~~
In file included from ../../../gettext-0.18.3.1/gettext-runtime/intl/dcigettext.c:65:
/usr/include/unistd.h:531:14: note: previous declaration of 'getcwd' with type 'char *(char *, size_t)' {aka 'char *(char *, long unsigned int)'}
  531 | extern char *getcwd (char *__buf, size_t __size) __THROW __wur;
      |              ^~~~~~
../../../gettext-0.18.3.1/gettext-runtime/intl/dcigettext.c: In function 'libintl_dcigettext':
../../../gettext-0.18.3.1/gettext-runtime/intl/dcigettext.c:640:21: error: too many arguments to function 'getcwd'; expected 0, have 2
  640 |               ret = getcwd (resolved_dirname, path_max);
      |                     ^~~~~~  ~~~~~~~~~~~~~~~~
../../../gettext-0.18.3.1/gettext-runtime/intl/dcigettext.c:147:7: note: declared here
  147 | char *getcwd ();
      |       ^~~~~~
```

These parts definitively changed in the current gettext. I assume that there is a reason that we use 0.18.3.1 instead of a current 0.26. So most likely we need a patch for the 0.18.3.1?

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