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These changes allow the MPM to be selected based on platform. At present it
[apache] / server / mpm / config.m4
1 AC_MSG_CHECKING(which MPM to use)
2 AC_ARG_WITH(mpm,
3 [  --with-mpm=MPM          Choose the process model for Apache to use.
4                           MPM={dexter,mpmt_beos,mpmt_pthread,prefork,spmt_os2}],[
5   APACHE_MPM=$withval
6 ],[
7   APACHE_MPM=mpmt_pthread
8   case "`uname -sr`" in
9     "BeOS"*)
10       APACHE_MPM=mpmt_beos;;
11   esac 
12 ])
13 AC_MSG_RESULT($APACHE_MPM)
14
15 apache_cv_mpm=$APACHE_MPM
16         
17 if test "$apache_cv_mpm" = "mpmt_pthread" -o "$apache_cv_mpm" = "dexter"; then
18   PTHREADS_CHECK
19   AC_MSG_CHECKING([for which threading library to use])
20   AC_MSG_RESULT($threads_result)
21
22   if test "$apache_threads_working" = "no"; then
23     AC_MSG_RESULT(The currently selected MPM requires pthreads which your system seems to lack)
24     AC_MSG_CHECKING(checking for replacement)
25     AC_MSG_RESULT(prefork selected)
26     apache_cv_mpm=prefork
27   fi
28 fi
29
30 APACHE_CHECK_SHM_RW
31
32 APACHE_FAST_OUTPUT(modules/mpm/Makefile)
33 MPM_NAME=$apache_cv_mpm
34 MPM_DIR=modules/mpm/$MPM_NAME
35 MPM_LIB=$MPM_DIR/lib${MPM_NAME}.la
36
37 APACHE_SUBST(MPM_NAME)
38 MODLIST="$MODLIST mpm_${MPM_NAME}"
39
40 dnl All the unix MPMs use shared memory; save a little duplication
41 AC_DEFUN(APACHE_MPM_CHECK_SHMEM, [
42     AC_CHECK_FUNCS(shmget)
43     AC_FUNC_MMAP
44     
45     AC_MSG_CHECKING(which shared memory mechanism to use)
46     if test "$ac_cv_func_shmget" = "yes" ; then
47         AC_DEFINE(USE_SHMGET_SCOREBOARD,,
48             [Define if MPMs should use shmget to implement their shared memory])
49         AC_MSG_RESULT(shmget)
50     elif test "$ac_cv_func_mmap" = "yes" ; then
51         AC_DEFINE(USE_MMAP_SCOREBOARD,,
52             [Define if MPMs should use mmap to implement their shared memory])
53         AC_MSG_RESULT(mmap)
54     else
55         AC_MSG_ERROR(No known shared memory system)
56     fi
57 ])
58
59 dnl Check for pthreads and attempt to support it
60 AC_DEFUN(APACHE_MPM_PTHREAD, [
61
62 dnl XXX - We should be checking for the proper flags to use on a particular 
63 dnl platform. This will cover a couple of them, anyway
64
65     AC_CHECK_HEADER(pthread.h, [ ],[
66         AC_MSG_ERROR(This MPM requires pthreads. Try --with-mpm=prefork.)
67     ])
68     AC_CHECK_FUNC(pthread_create, [ ],[
69         AC_MSG_ERROR(Can't compile pthread code.)
70     ])
71
72     dnl User threads libraries need pthread.h included everywhere
73     AC_DEFINE(PTHREAD_EVERYWHERE,,
74         [Define if all code should have #include <pthread.h>])
75 ])