X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/1944d7e6e89fd2cb37c39fb69f321828fcad9644..5922c78c4b1f8f8c2b4ceede15470ae59f4b2da7:/src/OS/os.h-Linux diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux index bde5dd710..3fead17d7 100644 --- a/src/OS/os.h-Linux +++ b/src/OS/os.h-Linux @@ -1,7 +1,12 @@ -/* $Cambridge: exim/src/OS/os.h-Linux,v 1.7 2007/10/04 13:28:06 tom Exp $ */ - /* Exim: OS-specific C header file for Linux */ +/* Some old systems we've received bug-reports for have a which +does not pull in . Best to just pull it in now and have done +with the issue. */ + +#include + + #define CRYPT_H #define GLIBC_IP_OPTIONS #define HAVE_MMAP @@ -10,10 +15,10 @@ #define NO_IP_VAR_H #define SIG_IGN_WORKS -/* When using the experimental Domainkeys/DKIM extensions, setting -HAVE_LINUX_SENDFILE can increase performance on outgoing mail a bit. -Note: With older glibc versions this setting will conflict with the -_FILE_OFFSET_BITS=64 setting defined as part of the Linux CFLAGS. */ +/* When using the DKIM, setting HAVE_LINUX_SENDFILE can increase +performance on outgoing mail a bit. Note: With older glibc versions +this setting will conflict with the _FILE_OFFSET_BITS=64 setting +defined as part of the Linux CFLAGS. */ /* #define HAVE_LINUX_SENDFILE */ @@ -52,4 +57,16 @@ extern struct ip_address_item *os_find_running_interfaces_linux(void); #endif /* __linux__ */ +/* Some folks running "unusual" setups with very old libc environments have +found that _GNU_SOURCE=1 before is not sufficient to define some +constants needed for 64-bit arithmetic. If you encounter build errors based +on LLONG_MIN being undefined and various other escape hatches have not helped, +then change the 0 to 1 in the next block. */ + +#if 0 +# define LLONG_MIN LONG_LONG_MIN +# define LLONG_MAX LONG_LONG_MAX +#endif + + /* End */