Fails to build on 32-bit PowerPC with 64-bit timestamps

[glaubitz]

Debian has switched its 32-bit targets to use 64-bit timestamps (i.e. sizeof(time_t) == 8) which causes ppc64-diag failing to build on 32-bit PowerPC:

lpd/usysident.c: In function ‘main’:
lpd/usysident.c:432:44: warning: the comparison will always evaluate as ‘true’ for the address of ‘devname’ will never be NULL [-Waddress]
  432 |                                 if (dvalue && current->devname &&
      |                                            ^~
In file included from lpd/usysident.c:39:
lpd/indicator.h:111:25: note: ‘devname’ declared here
  111 |         char            devname[DEV_LENGTH];    /* like sda, sdb etc */
      |                         ^~~~~~~
rtas_errd/v6ela.c: In function ‘report_menugoal’:
gcc -DHAVE_CONFIG_H -I. -I./config   -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -I ./common/ -I ./ela/ -I ./diags -I ./lpd/ -I /usr/include/ncurses/ -Wall -g -DDEBUG -DDEST_DIR='"/usr"' -DVERSION='"2.7.9"' -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-all -fwrapv -fPIE -Wstack-protector --param=ssp-buffer-size=1 -c -o diags/7031_D24_T24.o diags/7031_D24_T24.c
rtas_errd/v6ela.c:366:65: error: passing argument 1 of ‘time’ from incompatible pointer type [-Wincompatible-pointer-types]
  366 |                                                 time_loc = time((long *)0);
      |                                                                 ^~~~~~~~~
      |                                                                 |
      |                                                                 long int *
In file included from /usr/include/features.h:510,
                 from /usr/include/powerpc-linux-gnu/bits/libc-header-start.h:33,
                 from /usr/include/stdio.h:28,
                 from rtas_errd/v6ela.c:21:
/usr/include/time.h:85:15: note: expected ‘time_t *’ {aka ‘long long int *’} but argument is of type ‘long int *’
   85 | extern time_t __REDIRECT_NTH (time, (time_t *__timer), __time64);
      |               ^~~~~~~~~~~~~~
rtas_errd/v6ela.c:367:66: error: passing argument 1 of ‘localtime’ from incompatible pointer type [-Wincompatible-pointer-types]
  367 |                                                 date = localtime(&time_loc);
      |                                                                  ^~~~~~~~~
      |                                                                  |
      |                                                                  long int *
/usr/include/time.h:141:19: note: expected ‘const time_t *’ {aka ‘const long long int *’} but argument is of type ‘long int *’
  141 | extern struct tm *__REDIRECT_NTH (localtime, (const time_t *__timer),
      |                   ^~~~~~~~~~~~~~
gcc -DHAVE_CONFIG_H -I. -I./config   -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 -I ./common/ -I ./ela/ -I ./diags -I ./lpd/ -I /usr/include/ncurses/ -Wall -g -DDEBUG -DDEST_DIR='"/usr"' -DVERSION='"2.7.9"' -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-all -fwrapv -fPIE -Wstack-protector --param=ssp-buffer-size=1 -c -o diags/bluehawk.o diags/bluehawk.c
make[1]: *** [Makefile:2170: rtas_errd/v6ela.o] Error 1
make[1]: *** Waiting for unfinished jobs....
In file included from /usr/include/string.h:548,
                 from rtas_errd/extract_platdump.c:26:
In function ‘strcat’,
    inlined from ‘extract_platform_dump’ at rtas_errd/extract_platdump.c:274:3:
/usr/include/powerpc-linux-gnu/bits/string_fortified.h:140:10: warning: ‘dumpid’ may be used uninitialized [-Wmaybe-uninitialized]
  140 |   return __builtin___strcat_chk (__dest, __src, __glibc_objsize (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<built-in>: In function ‘extract_platform_dump’:
<built-in>: note: by argument 2 of type ‘const char *’ to ‘__builtin___strcpy_chk’ declared here
rtas_errd/extract_platdump.c:223:17: note: ‘dumpid’ declared here
  223 |         char    dumpid[5];
      |                 ^~~~~~

Full build log available at: https://buildd.debian.org/status/fetch.php?pkg=ppc64-diag&arch=powerpc&ver=2.7.9-1.1&stamp=1733512224&raw=0