1 files changed, 143 insertions, 0 deletions
diff --git a/modules/cache/config.m4 b/modules/cache/config.m4
new file mode 100644
index 0000000..4fa414b
--- /dev/null
+++ b/modules/cache/config.m4
@@ -0,0 +1,143 @@
+dnl modules enabled in this directory by default
+
+dnl APACHE_MODULE(name, helptext[, objects[, structname[, default[, config]]]])
+
+APACHE_MODPATH_INIT(cache)
+
+APACHE_MODULE(file_cache, File cache, , , most)
+
+dnl #  list of object files for mod_cache
+cache_objs="dnl
+mod_cache.lo dnl
+cache_storage.lo dnl
+cache_util.lo dnl
+"
+cache_disk_objs="mod_cache_disk.lo"
+cache_socache_objs="mod_cache_socache.lo"
+
+case "$host" in
+  *os2*)
+    # OS/2 DLLs must resolve all symbols at build time
+    # and we need some from main cache module
+    cache_disk_objs="$cache_disk_objs mod_cache.la"
+    cache_socache_objs="$cache_socache_objs mod_cache.la"
+    ;;
+esac
+
+APACHE_MODULE(cache, dynamic file caching.  At least one storage management module (e.g. mod_cache_disk) is also necessary., $cache_objs, , most)
+APACHE_MODULE(cache_disk, disk caching module, $cache_disk_objs, , most, , cache)
+APACHE_MODULE(cache_socache, shared object caching module, $cache_socache_objs, , most)
+
+dnl
+dnl APACHE_CHECK_DISTCACHE
+dnl
+dnl Configure for the detected distcache installation, giving
+dnl preference to "--with-distcache=<path>" if it was specified.
+dnl
+AC_DEFUN([APACHE_CHECK_DISTCACHE],[
+if test "x$ap_distcache_configured" = "x"; then
+  dnl initialise the variables we use
+  ap_distcache_found=""
+  ap_distcache_base=""
+  ap_distcache_libs=""
+  ap_distcache_ldflags=""
+  ap_distcache_with=""
+
+  dnl Determine the distcache base directory, if any
+  AC_MSG_CHECKING([for user-provided distcache base])
+  AC_ARG_WITH(distcache, APACHE_HELP_STRING(--with-distcache=PATH, Distcache installation directory), [
+    dnl If --with-distcache specifies a directory, we use that directory or fail
+    if test "x$withval" != "xyes" -a "x$withval" != "x"; then
+      dnl This ensures $withval is actually a directory and that it is absolute
+      ap_distcache_with="yes"
+      ap_distcache_base="`cd $withval ; pwd`"
+    fi
+  ])
+  if test "x$ap_distcache_base" = "x"; then
+    AC_MSG_RESULT(none)
+  else
+    AC_MSG_RESULT($ap_distcache_base)
+  fi
+
+  dnl Run header and version checks
+  saved_CPPFLAGS="$CPPFLAGS"
+  saved_LIBS="$LIBS"
+  saved_LDFLAGS="$LDFLAGS"
+
+  if test "x$ap_distcache_base" != "x"; then
+    APR_ADDTO(CPPFLAGS, [-I$ap_distcache_base/include])
+    APR_ADDTO(MOD_INCLUDES, [-I$ap_distcache_base/include])
+    APR_ADDTO(LDFLAGS, [-L$ap_distcache_base/lib])
+    APR_ADDTO(ap_distcache_ldflags, [-L$ap_distcache_base/lib])
+    if test "x$ap_platform_runtime_link_flag" != "x"; then
+      APR_ADDTO(LDFLAGS, [$ap_platform_runtime_link_flag$ap_distcache_base/lib])
+      APR_ADDTO(ap_distcache_ldflags, [$ap_platform_runtime_link_flag$ap_distcache_base/lib])
+    fi
+  fi
+  dnl First check for mandatory headers
+  AC_CHECK_HEADERS([distcache/dc_client.h], [ap_distcache_found="yes"], [])
+  if test "$ap_distcache_found" = "yes"; then
+    dnl test for a good version
+    AC_MSG_CHECKING(for distcache version)
+    AC_TRY_COMPILE([#include <distcache/dc_client.h>],[
+#if DISTCACHE_CLIENT_API != 0x0001
+#error "distcache API version is unrecognised"
+#endif],
+      [],
+      [ap_distcache_found="no"])
+    AC_MSG_RESULT($ap_distcache_found)
+  fi
+  if test "$ap_distcache_found" != "yes"; then
+    if test "x$ap_distcache_with" = "x"; then
+      AC_MSG_WARN([...No distcache detected])
+    else
+      AC_MSG_ERROR([...No distcache detected])
+    fi
+  else
+    dnl Run library and function checks
+    AC_MSG_CHECKING(for distcache libraries)
+    ap_distcache_libs="-ldistcache -lnal"
+    APR_ADDTO(LIBS, [$ap_distcache_libs])
+
+    AC_TRY_LINK(
+      [#include <distcache/dc_client.h>],
+      [DC_CTX *foo = DC_CTX_new((const char *)0,0);],
+      [],
+      [ap_distcache_found="no"])
+    AC_MSG_RESULT($ap_distcache_found)
+    if test "$ap_distcache_found" != "yes"; then
+      if test "x$ap_distcache_base" = "x"; then
+        AC_MSG_WARN([... Error, distcache libraries were missing or unusable])
+      else
+        AC_MSG_ERROR([... Error, distcache libraries were missing or unusable])
+      fi
+    fi
+  fi
+
+  dnl restore
+  CPPFLAGS="$saved_CPPFLAGS"
+  LIBS="$saved_LIBS"
+  LDFLAGS="$saved_LDFLAGS"
+
+  dnl Adjust apache's configuration based on what we found above.
+  if test "$ap_distcache_found" = "yes"; then
+    APR_ADDTO(MOD_SOCACHE_DC_LDADD, [$ap_distcache_ldflags $ap_distcache_libs])
+    AC_DEFINE(HAVE_DISTCACHE, 1, [Define if distcache support is enabled])
+  else
+    enable_socache_dc=no
+  fi
+  ap_distcache_configured="yes"
+fi
+])
+
+APACHE_MODULE(socache_shmcb,  shmcb small object cache provider, , , most)
+APACHE_MODULE(socache_dbm, dbm small object cache provider, , , most)
+APACHE_MODULE(socache_memcache, memcache small object cache provider, , , most)
+APACHE_MODULE(socache_redis, redis small object cache provider, , , most)
+APACHE_MODULE(socache_dc, distcache small object cache provider, , , no, [
+    APACHE_CHECK_DISTCACHE
+])
+
+APR_ADDTO(INCLUDES, [-I\$(top_srcdir)/$modpath_current])
+
+APACHE_MODPATH_FINISH