gistfile1.txt

root@rescue ~/pacman-4.1.2 # make CFLASG="-DPATH_MAX=256"
make --no-print-directory all-recursive
Making all in lib/libalpm
Making all in po
  CC       libalpm_la-add.lo
  CC       libalpm_la-alpm.lo
  CC       libalpm_la-alpm_list.lo
  CC       libalpm_la-backup.lo
  CC       libalpm_la-be_local.lo
  CC       libalpm_la-be_package.lo
  CC       libalpm_la-be_sync.lo
be_sync.c: In function '_alpm_validate_filename':
be_sync.c:499:18: error: 'PATH_MAX' undeclared (first use in this function)
be_sync.c:499:18: note: each undeclared identifier is reported only once for each function it appears in
make[3]: *** [libalpm_la-be_sync.lo] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2