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configure: If cross-compiling, assume we have working semaphores

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The Asterisk 13 configure.ac checks for HAS_WORKING_SEMAPHORE but does not have
an option for cross-compiling so it fails with an exit. Since we're cross-
compiling, we can't exactly go looking for the header. The semaphore.h header
is relatively common:
* It's part of the POSIX standard
* It's part of GNU C Library
As such, we assume that it will be present when cross-compiling.

As such, this patch defaults "HAS_WORKING_SEMAPHORE" to "1" if cross-compiling
is detected.

If you're cross-compiling to a platform that doesn't support this, then make
sure you re-define this to 0.

ASTERISK-24663 #close
Reported by: abelbeck
patches:
  asterisk-13-anonymous-semaphores.patch uploaded by abelbeck (License 5903)
........

Merged revisions 430646 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@430647 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matthew Jordan
2015-01-15 02:19:49 +00:00
parent 49542a794b
commit f11fb76205
2 changed files with 13 additions and 7 deletions
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5
configure.ac
View File

@@ -884,7 +884,10 @@ AC_RUN_IFELSE(
[sem_t sem; return sem_init(&sem, 0, 0);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAS_WORKING_SEMAPHORE], 1, [Define to 1 if anonymous semaphores work.]),
AC_MSG_RESULT(no)
AC_MSG_RESULT(no),
AC_MSG_RESULT(cross-compile)
AC_MSG_NOTICE([WARNING: result yes guessed because of cross compilation])
AC_DEFINE([HAS_WORKING_SEMAPHORE], 1, [Define to 1 if anonymous semaphores work.])
)
LIBS="$save_LIBS"