diff options
| author |   SUZUKI, Shinsuke <suz@kame.net> | 2006-09-02 08:00:25 +0000 |
|---|---|---|
| committer | SUZUKI, Shinsuke <suz@kame.net> | 2006-09-02 08:00:25 +0000 |
| commit | a81d6601b213f657821f80bd6f257545647574a0 (patch) | |
| tree | 765faa8d45b5512188ad7cf46df6d2b33e1f658c /configure.in | |
| parent | 26ff90dadfa215eaeb5008bd6d50fe1db5969a13 (diff) | |
added a configure check routine to automatically detect a difference(*1) in
TAILQ_FOREACH_REVERSE macros. (Suggested by Brute STEVANT)
*1)
Some OS (*BSD) adopts the following definition,
#define TAILQ_FOREACH_REVERSE(var, head, headname, field)
but others (MacOS-X, old OpenBSD) adopts the following definition
#define TAILQ_FOREACH_REVERSE(var, head, field, headname)
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 624061f..19e8d38 100644 --- a/configure.in +++ b/configure.in @@ -147,6 +147,46 @@ esac dnl DHCP option type values not officially defined dnl (no such option now) +dnl Checks the existence of TAILQ_FOREACH_REVERSE +AC_MSG_CHECKING(checking the existence TAILQ_FOREACH_REVERSE) +AC_EGREP_CPP(yes, +[#include <sys/queue.h> + #ifdef TAILQ_FOREACH_REVERSE + yes +#endif], [result=yes], [result=no]) +AC_MSG_RESULT($result) +case $result in +yes) tailq_foreach=yes + ;; +*) tailq_foreach=no + ;; +esac + +dnl Checks the argument order of TAILQ_FOREACH_REVERSE if it exists +if test $tailq_foreach = yes ; then + AC_MSG_CHECKING(argument order of TAILQ_FOREACH_REVERSE) + AC_TRY_COMPILE([], + [ + #include <stdio.h> + #include <sys/queue.h> + + TAILQ_HEAD(tailhead, entry) head = TAILQ_HEAD_INITIALIZER(head); + struct entry { + TAILQ_ENTRY(entry) entries; + } *p; + + int i; + struct tailhead *headp; + + TAILQ_FOREACH_REVERSE(p, headp, tailhead, entries) { + } + ], + [AC_MSG_RESULT(new) + AC_DEFINE(HAVE_TAILQ_FOREACH_REVERSE)], + [AC_MSG_RESULT(old) + AC_DEFINE(HAVE_TAILQ_FOREACH_REVERSE_OLD)]); +fi + AC_CHECK_HEADERS(stdarg.h) AC_OUTPUT(Makefile) |