Merged martin/autoconf at r35 to trunk

14 files changed, 637 insertions, 0 deletions

diff --git a/infrastructure/m4/ac_cxx_exceptions.m4 b/infrastructure/m4/ac_cxx_exceptions.m4
new file mode 100644
index 00000000..4c3013dc
--- /dev/null
+++ b/infrastructure/m4/ac_cxx_exceptions.m4
@@ -0,0 +1,24 @@
+dnl @synopsis AC_CXX_EXCEPTIONS
+dnl
+dnl If the C++ compiler supports exceptions handling (try, throw and
+dnl catch), define HAVE_EXCEPTIONS.
+dnl
+dnl @category Cxx
+dnl @author Todd Veldhuizen
+dnl @author Luc Maisonobe <luc@spaceroots.org>
+dnl @version 2004-02-04
+dnl @license AllPermissive
+
+AC_DEFUN([AC_CXX_EXCEPTIONS],
+[AC_CACHE_CHECK(whether the compiler supports exceptions,
+ac_cv_cxx_exceptions,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE(,[try { throw  1; } catch (int i) { return i; }],
+ ac_cv_cxx_exceptions=yes, ac_cv_cxx_exceptions=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_exceptions" = yes; then
+  AC_DEFINE(HAVE_EXCEPTIONS,,[define if the compiler supports exceptions])
+fi
+])
diff --git a/infrastructure/m4/ac_cxx_namespaces.m4 b/infrastructure/m4/ac_cxx_namespaces.m4
new file mode 100644
index 00000000..2f18477b
--- /dev/null
+++ b/infrastructure/m4/ac_cxx_namespaces.m4
@@ -0,0 +1,25 @@
+dnl @synopsis AC_CXX_NAMESPACES
+dnl
+dnl If the compiler can prevent names clashes using namespaces, define
+dnl HAVE_NAMESPACES.
+dnl
+dnl @category Cxx
+dnl @author Todd Veldhuizen
+dnl @author Luc Maisonobe <luc@spaceroots.org>
+dnl @version 2004-02-04
+dnl @license AllPermissive
+
+AC_DEFUN([AC_CXX_NAMESPACES],
+[AC_CACHE_CHECK(whether the compiler implements namespaces,
+ac_cv_cxx_namespaces,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
+                [using namespace Outer::Inner; return i;],
+ ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_namespaces" = yes; then
+  AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])
+fi
+])
diff --git a/infrastructure/m4/ax_check_bdb_v1.m4 b/infrastructure/m4/ax_check_bdb_v1.m4
new file mode 100644
index 00000000..de36ca07
--- /dev/null
+++ b/infrastructure/m4/ax_check_bdb_v1.m4
@@ -0,0 +1,43 @@
+dnl @synopsis AX_CHECK_BDB_V1
+dnl
+dnl This macro find an installation of Berkeley DB version 1, or compatible.
+dnl It will define the following macros on success:
+dnl
+dnl HAVE_DB     - If Berkeley DB version 1 or compatible is available
+dnl DB_HEADER   - The relative path and filename of the header file
+dnl LIBS        - Updated for correct library
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/12
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_BDB_V1], [
+  ac_have_bdb=no
+  AC_CHECK_HEADERS([db_185.h db4/db_185.h db3/db_185.h db1/db.h db.h],
+                   [ac_bdb_header=$ac_header; break], [ac_bdb_header=""])
+  if test "x$ac_bdb_header" != x; then
+    AC_SEARCH_LIBS([__db185_open],
+                   [db db-4.3 db-4.2 db-4.1 db-4.0 db-3],
+                   [ac_have_bdb=yes],
+                   [AC_SEARCH_LIBS([dbopen], [db-1 db], [ac_have_bdb=yes])])
+  fi
+  if test "x$ac_have_bdb" = "xyes"; then
+    AC_MSG_CHECKING([whether found db libraries work])
+    AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+        $ac_includes_default
+        #include "$ac_bdb_header"]], [[
+        DB *dbp = dbopen(0, 0, 0, DB_HASH, 0);
+        if(dbp) dbp->close(dbp);
+        return 0;
+      ]])], [
+      AC_MSG_RESULT([yes])
+      AC_DEFINE([HAVE_DB], 1, [Define to 1 if Berkeley DB is available])
+      AC_DEFINE_UNQUOTED([DB_HEADER], ["$ac_bdb_header"],
+                          [Define to the location of the Berkeley DB 1.85 header])
+      ], [
+      AC_MSG_RESULT([no])
+      ac_have_bdb=no
+      ])
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_define_pragma.m4 b/infrastructure/m4/ax_check_define_pragma.m4
new file mode 100644
index 00000000..176faf3d
--- /dev/null
+++ b/infrastructure/m4/ax_check_define_pragma.m4
@@ -0,0 +1,25 @@
+dnl @synopsis AX_CHECK_DEFINE_PRAGMA([ACTION-IF-TRUE], [ACTION-IF-FALSE])
+dnl
+dnl This macro will find out if the compiler will accept #pragma inside a
+dnl #define. HAVE_DEFINE_PRAGMA will be defined if this is the case, and
+dnl ACTION-IF-TRUE and ACTION-IF-FALSE are run as appropriate
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/03
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_DEFINE_PRAGMA], [
+  AC_CACHE_CHECK([for pre-processor pragma defines], [have_define_pragma],
+    [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+        #define TEST_DEFINE #pragma pack(1)
+        TEST_DEFINE
+      ]])],
+      [have_define_pragma=yes], [have_define_pragma=no]
+    )])
+  if test "x$have_define_pragma" = "xyes"; then
+    AC_DEFINE([HAVE_DEFINE_PRAGMA], 1, [Define to 1 if #define of pragmas works])
+    m4_ifvaln([$1],[$1],[:])dnl
+    m4_ifvaln([$2],[else $2])dnl
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_dirent_d_type.m4 b/infrastructure/m4/ax_check_dirent_d_type.m4
new file mode 100644
index 00000000..87b93185
--- /dev/null
+++ b/infrastructure/m4/ax_check_dirent_d_type.m4
@@ -0,0 +1,41 @@
+dnl @synopsis AX_CHECK_DIRENT_D_TYPE([ACTION-IF-TRUE], [ACTION-IF-FALSE])
+dnl
+dnl This macro will find out if struct dirent.d_type is present and supported.
+dnl
+dnl The following defines will be set as appropriate:
+dnl HAVE_STRUCT_DIRENT_D_TYPE
+dnl HAVE_VALID_DIRENT_D_TYPE
+dnl Also ACTION-IF-TRUE and ACTION-IF-FALSE are run as appropriate
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/03
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_DIRENT_D_TYPE], [
+  AC_CHECK_MEMBERS([struct dirent.d_type],,, [[#include <dirent.h>]])
+  if test "x$ac_cv_member_struct_dirent_d_type" = "xyes"; then
+    AC_CACHE_CHECK([[whether struct dirent.d_type is valid]], [have_valid_dirent_d_type],
+      [AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM([[
+          $ac_includes_default
+          #include <dirent.h>
+          ]], [[
+          DIR* dir = opendir(".");
+          struct dirent* res = NULL;
+          if(dir) res = readdir(dir);
+          return res ? (res->d_type==DT_UNKNOWN) : 1;
+        ]])],
+        [have_valid_dirent_d_type=yes], [have_valid_dirent_d_type=no]
+      )])
+    if test "x$have_valid_dirent_d_type" = "xyes"; then
+      AC_DEFINE([HAVE_VALID_DIRENT_D_TYPE], 1, [Define to 1 if struct dirent.d_type is valid])
+    fi
+  fi
+  if test "x$ac_cv_member_struct_dirent_d_type" = "xyes" || \
+     test "x$have_valid_dirent_d_type" = "xyes"
+  then
+    m4_ifvaln([$1],[$1],[:])dnl
+    m4_ifvaln([$2],[else $2])dnl
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_llong_minmax.m4 b/infrastructure/m4/ax_check_llong_minmax.m4
new file mode 100644
index 00000000..f3f99c53
--- /dev/null
+++ b/infrastructure/m4/ax_check_llong_minmax.m4
@@ -0,0 +1,76 @@
+dnl @synopsis AX_CHECK_LLONG_MINMAX
+dnl
+dnl This macro will fix up LLONG_MIN and LLONG_MAX as appropriate. I'm finding
+dnl it quite difficult to believe that so many hoops are necessary. The world
+dnl seems to have gone quite mad.
+dnl
+dnl This gem is adapted from the OpenSSH configure script so here's
+dnl the original copyright notice:
+dnl
+dnl Copyright (c) 1999-2004 Damien Miller
+dnl
+dnl Permission to use, copy, modify, and distribute this software for any
+dnl purpose with or without fee is hereby granted, provided that the above
+dnl copyright notice and this permission notice appear in all copies.
+dnl
+dnl @category C
+dnl @author Martin Ebourne and Damien Miller
+dnl @version 2005/07/07
+
+AC_DEFUN([AX_CHECK_LLONG_MINMAX], [
+  AC_CHECK_DECL([LLONG_MAX], [have_llong_max=1], , [[#include <limits.h>]])
+  if test -z "$have_llong_max"; then
+    AC_MSG_CHECKING([[for max value of long long]])
+    AC_RUN_IFELSE([AC_LANG_SOURCE([[
+      #include <stdio.h>
+      /* Why is this so damn hard? */
+      #undef __GNUC__
+      #undef __USE_ISOC99
+      #define __USE_ISOC99
+      #include <limits.h>
+      #define DATA "conftest.llminmax"
+      int main(void) {
+        FILE *f;
+        long long i, llmin, llmax = 0;
+
+        if((f = fopen(DATA,"w")) == NULL)
+          exit(1);
+
+        #if defined(LLONG_MIN) && defined(LLONG_MAX)
+        fprintf(stderr, "Using system header for LLONG_MIN and LLONG_MAX\n");
+        llmin = LLONG_MIN;
+        llmax = LLONG_MAX;
+        #else
+        fprintf(stderr, "Calculating LLONG_MIN and LLONG_MAX\n");
+        /* This will work on one's complement and two's complement */
+        for (i = 1; i > llmax; i <<= 1, i++)
+          llmax = i;
+        llmin = llmax + 1LL;    /* wrap */
+        #endif
+
+        /* Sanity check */
+        if (llmin + 1 < llmin || llmin - 1 < llmin || llmax + 1 > llmax || llmax - 1 > llmax) {
+          fprintf(f, "unknown unknown\n");
+          exit(2);
+        }
+
+        if (fprintf(f ,"%lld %lld", llmin, llmax) < 0)
+          exit(3);
+
+        exit(0);
+      }
+      ]])], [
+      read llong_min llong_max < conftest.llminmax
+      AC_MSG_RESULT([$llong_max])
+      AC_DEFINE_UNQUOTED([LLONG_MAX], [${llong_max}LL],
+                         [max value of long long calculated by configure])
+      AC_MSG_CHECKING([[for min value of long long]])
+      AC_MSG_RESULT([$llong_min])
+      AC_DEFINE_UNQUOTED([LLONG_MIN], [${llong_min}LL],
+                         [min value of long long calculated by configure])
+      ],
+      [AC_MSG_RESULT(not found)],
+      [AC_MSG_WARN([[cross compiling: not checking]])]
+      )
+    fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_malloc_workaround.m4 b/infrastructure/m4/ax_check_malloc_workaround.m4
new file mode 100644
index 00000000..9b1c9848
--- /dev/null
+++ b/infrastructure/m4/ax_check_malloc_workaround.m4
@@ -0,0 +1,38 @@
+dnl @synopsis AX_CHECK_MALLOC_WORKAROUND
+dnl
+dnl This macro will see if there is a potential STL memory leak, and if we can
+dnl work around it will define __USE_MALLOC as the fix.
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/12
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_MALLOC_WORKAROUND], [
+  if test "x$GXX" = "xyes"; then
+    AC_CACHE_CHECK([for gcc version 3 or later], [gcc_3_plus],
+      [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+          #if __GNUC__ < 3
+          #error "Old GNU C"
+          #endif
+          ]])],
+      [gcc_3_plus=yes], [gcc_3_plus=no]
+    )])
+    if test "x$gcc_3_plus" = "xno"; then
+      AC_CACHE_CHECK([for malloc workaround], [malloc_workaround],
+        [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+            #define __USE_MALLOC
+            #include <string>
+          ]], [[
+            std::string s;
+            s = "test";
+        ]])],
+        [malloc_workaround=yes], [malloc_workaround=no]
+      )])
+      if test "x$malloc_workaround" = "xyes"; then
+        AC_DEFINE([__USE_MALLOC], 1,
+                  [Define to 1 if __USE_MALLOC is required work around STL memory leaks])
+      fi
+    fi
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_mount_point.m4 b/infrastructure/m4/ax_check_mount_point.m4
new file mode 100644
index 00000000..747888cc
--- /dev/null
+++ b/infrastructure/m4/ax_check_mount_point.m4
@@ -0,0 +1,41 @@
+dnl @synopsis AX_CHECK_MOUNT_POINT([ACTION-IF-TRUE], [ACTION-IF-FALSE])
+dnl
+dnl This macro will find out how to get mount point information if possible.
+dnl
+dnl The following defines will be set as appropriate:
+dnl HAVE_MNTENT_H
+dnl HAVE_SYS_MNTTAB_H
+dnl HAVE_SYS_MOUNT_H
+dnl HAVE_STRUCT_MNTENT_MNT_DIR
+dnl HAVE_STRUCT_MNTTAB_MNT_MOUNTP
+dnl HAVE_STRUCT_STATFS_F_MNTONNAME
+dnl Also ACTION-IF-TRUE and ACTION-IF-FALSE are run as appropriate
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/01
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_MOUNT_POINT], [
+  AC_CHECK_FUNCS([getmntent statfs])
+  AC_CHECK_HEADERS([mntent.h sys/mnttab.h sys/mount.h],,, [[#include <stdio.h>]])
+  # BSD
+  AC_CHECK_MEMBERS([struct statfs.f_mntonname],,, [[
+    #include <sys/param.h>
+    #include <sys/mount.h>
+    ]])
+  # Linux
+  AC_CHECK_MEMBERS([struct mntent.mnt_dir],,, [[#include <mntent.h>]])
+  # Solaris
+  AC_CHECK_MEMBERS([struct mnttab.mnt_mountp],,, [[
+    #include <stdio.h>
+    #include <sys/mnttab.h>
+    ]])
+  if test "x$ac_cv_member_struct_statfs_f_mntonname" = "xyes" || \
+     test "x$ac_cv_member_struct_mntent_mnt_dir" = "xyes" || \
+     test "x$ac_cv_member_struct_mnttab_mnt_mountp" = "xyes"
+  then
+    m4_ifvaln([$1],[$1],[:])dnl
+    m4_ifvaln([$2],[else $2])dnl
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_nonaligned_access.m4 b/infrastructure/m4/ax_check_nonaligned_access.m4
new file mode 100644
index 00000000..8a6cd0c6
--- /dev/null
+++ b/infrastructure/m4/ax_check_nonaligned_access.m4
@@ -0,0 +1,57 @@
+dnl @synopsis AX_CHECK_NONALIGNED_ACCESS
+dnl
+dnl This macro will see if non-aligned memory accesses will fail. The following
+dnl defines will be made as appropriate:
+dnl HAVE_ALIGNED_ONLY_INT16
+dnl HAVE_ALIGNED_ONLY_INT32
+dnl HAVE_ALIGNED_ONLY_INT64
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/12
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_NONALIGNED_ACCESS], [
+  AC_CACHE_CHECK([if non-aligned 16 bit word accesses fail], [have_aligned_only_int16],
+    [AC_RUN_IFELSE([AC_LANG_PROGRAM([[$ac_includes_default]], [[
+        #ifndef HAVE_UINT16_T
+          #define uint16_t u_int16_t;
+        #endif
+        uint16_t scratch[2];
+        memset(scratch, 0, sizeof(scratch));
+        return *(uint16_t*)((char*)scratch+1);
+      ]])],
+      [have_aligned_only_int16=no], [have_aligned_only_int16=yes]
+    )])
+  if test "x$have_aligned_only_int16" = "xyes"; then
+    AC_DEFINE([HAVE_ALIGNED_ONLY_INT16], 1, [Define to 1 if non-aligned int16 access will fail])
+  fi
+  AC_CACHE_CHECK([if non-aligned 32 bit word accesses fail], [have_aligned_only_int32],
+    [AC_RUN_IFELSE([AC_LANG_PROGRAM([[$ac_includes_default]], [[
+        #ifndef HAVE_UINT32_T
+          #define uint32_t u_int32_t;
+        #endif
+        uint32_t scratch[2];
+        memset(scratch, 0, sizeof(scratch));
+        return *(uint32_t*)((char*)scratch+1);
+      ]])],
+      [have_aligned_only_int32=no], [have_aligned_only_int32=yes]
+    )])
+  if test "x$have_aligned_only_int32" = "xyes"; then
+    AC_DEFINE([HAVE_ALIGNED_ONLY_INT32], 1, [Define to 1 if non-aligned int32 access will fail])
+  fi
+  AC_CACHE_CHECK([if non-aligned 64 bit word accesses fail], [have_aligned_only_int64],
+    [AC_RUN_IFELSE([AC_LANG_PROGRAM([[$ac_includes_default]], [[
+        #ifndef HAVE_UINT64_T
+          #define uint64_t u_int64_t;
+        #endif
+        uint64_t scratch[2];
+        memset(scratch, 0, sizeof(scratch));
+        return *(uint64_t*)((char*)scratch+1);
+      ]])],
+      [have_aligned_only_int64=no], [have_aligned_only_int64=yes]
+    )])
+  if test "x$have_aligned_only_int64" = "xyes"; then
+    AC_DEFINE([HAVE_ALIGNED_ONLY_INT64], 1, [Define to 1 if non-aligned int64 access will fail])
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_ssl.m4 b/infrastructure/m4/ax_check_ssl.m4
new file mode 100644
index 00000000..039c8398
--- /dev/null
+++ b/infrastructure/m4/ax_check_ssl.m4
@@ -0,0 +1,37 @@
+dnl @synopsis AX_CHECK_SSL([ACTION-IF-TRUE], [ACTION-IF-FALSE])
+dnl
+dnl This macro will check for OpenSSL in the standard path, allowing the user
+dnl to specify a directory if it is not found. The user uses
+dnl '--with-ssl-headers=/path/to/headers' or
+dnl '--with-ssl-lib=/path/to/lib' as arguments to configure.
+dnl
+dnl If OpenSSL is found the include directory gets added to CPPFLAGS,
+dnl '-lcrypto', '-lssl', and the libraries directory are added to LDFLAGS.
+dnl Also HAVE_SSL is defined to 1, and ACTION-IF-TRUE and ACTION-IF-FALSE are
+dnl run as appropriate
+dnl
+dnl @category InstalledPackages
+dnl @author Martin Ebourne
+dnl @version 2005/07/01
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_SSL], [
+  AC_ARG_WITH(
+    [ssl-headers],
+    [AC_HELP_STRING([--with-ssl-headers=DIR], [SSL include files location])],
+    [CPPFLAGS="$CPPFLAGS -I$withval"])
+  AC_ARG_WITH(
+    [ssl-lib],
+    [AC_HELP_STRING([--with-ssl-lib=DIR], [SSL library location])],
+    [LDFLAGS="$LDFLAGS -L$withval"])
+
+  ax_check_ssl_found=yes
+  AC_CHECK_HEADERS([openssl/ssl.h],, [ax_check_ssl_found=no])
+  AC_CHECK_LIB([ssl], [SSL_read],, [ax_check_ssl_found=no])
+
+  if test "x$ax_check_ssl_found" = "xyes"; then
+    AC_DEFINE([HAVE_SSL], 1, [Define to 1 if SSL is available])
+    m4_ifvaln([$1],[$1],[:])dnl
+    m4_ifvaln([$2],[else $2])dnl
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_check_syscall_lseek.m4 b/infrastructure/m4/ax_check_syscall_lseek.m4
new file mode 100644
index 00000000..6bf93c23
--- /dev/null
+++ b/infrastructure/m4/ax_check_syscall_lseek.m4
@@ -0,0 +1,54 @@
+dnl @synopsis AX_CHECK_SYSCALL_LSEEK([ACTION-IF-TRUE], [ACTION-IF-FALSE])
+dnl
+dnl This macro will find out if the lseek syscall requires a dummy middle
+dnl parameter
+dnl
+dnl The following defines will be set as appropriate:
+dnl HAVE_LSEEK_DUMMY_PARAM
+dnl Also ACTION-IF-TRUE and ACTION-IF-FALSE are run as appropriate
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/03
+dnl @license AllPermissive
+
+AC_DEFUN([AX_CHECK_SYSCALL_LSEEK], [
+  AC_REQUIRE([AX_FUNC_SYSCALL])dnl
+  if test "x$ac_cv_header_sys_syscall_h" = "xyes"; then
+    AC_CACHE_CHECK([[whether syscall lseek requires dummy parameter]], [have_lseek_dummy_param],
+      [AC_RUN_IFELSE(
+        [AC_LANG_PROGRAM([[
+          $ac_includes_default
+          #include <fcntl.h>
+          #include <sys/syscall.h>
+          #ifdef HAVE___SYSCALL_NEED_DEFN
+            extern "C" off_t __syscall(quad_t number, ...);
+          #endif
+          #ifndef HAVE_SYSCALL
+            #undef syscall
+            #define syscall __syscall
+          #endif
+          ]], [[
+          int fh = creat("lseektest", 0600);
+          int res = 0;
+          if(fh>=0)
+          {
+            res = syscall(SYS_lseek, fh, 0, SEEK_SET, 99);
+            close(fh);
+          }
+          unlink("lseektest");
+          return res!=-1;
+        ]])],
+        [have_lseek_dummy_param=yes], [have_lseek_dummy_param=no]
+      )])
+    if test "x$have_lseek_dummy_param" = "xyes"; then
+      AC_DEFINE([HAVE_LSEEK_DUMMY_PARAM], 1,
+                [Define to 1 if syscall lseek requires a dummy middle parameter])
+    fi
+  fi
+  if test "x$have_lseek_dummy_param" = "xno"
+  then
+    m4_ifvaln([$1],[$1],[:])dnl
+    m4_ifvaln([$2],[else $2])dnl
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_func_syscall.m4 b/infrastructure/m4/ax_func_syscall.m4
new file mode 100644
index 00000000..40496bf0
--- /dev/null
+++ b/infrastructure/m4/ax_func_syscall.m4
@@ -0,0 +1,39 @@
+dnl @synopsis AX_FUNC_SYSCALL
+dnl
+dnl This macro will find out how to call syscall. One or more of the following
+dnl defines will be made as appropriate:
+dnl HAVE_UNISTD_H            - If unistd.h is available
+dnl HAVE_SYS_SYSCALL_H       - If sys/syscall.h is available
+dnl HAVE_SYSCALL             - If syscall() is available and is defined in unistd.h
+dnl HAVE___SYSCALL           - If __syscall() is available and is defined in unistd.h
+dnl HAVE___SYSCALL_NEED_DEFN - If __syscall() is available but is not defined in unistd.h
+dnl
+dnl @category C
+dnl @author Martin Ebourne
+dnl @version 2005/07/01
+dnl @license AllPermissive
+
+AC_DEFUN([AX_FUNC_SYSCALL], [
+  AC_CHECK_HEADERS([sys/syscall.h unistd.h])
+  AC_CHECK_FUNCS([syscall __syscall])
+  if test "x$ac_cv_func_syscall" != "xyes" &&
+     test "x$ac_cv_func___syscall" != "xyes"; then
+    AC_CACHE_CHECK([for __syscall needing definition], [have___syscall_need_defn],
+      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+          $ac_includes_default
+          #ifdef HAVE_SYS_SYSCALL_H
+            #include <sys/syscall.h>
+          #endif
+          extern "C" off_t __syscall(quad_t number, ...);
+          ]], [[
+          __syscall(SYS_exit, 0);
+          return 1;
+        ]])],
+        [have___syscall_need_defn=yes], [have___syscall_need_defn=no]
+      )])
+    if test "x$have___syscall_need_defn" = "xyes"; then
+      AC_DEFINE([HAVE___SYSCALL_NEED_DEFN], 1,
+                [Define to 1 if __syscall is available but needs a definition])
+    fi
+  fi
+  ])dnl
diff --git a/infrastructure/m4/ax_random_device.m4 b/infrastructure/m4/ax_random_device.m4
new file mode 100644
index 00000000..ab9b56fd
--- /dev/null
+++ b/infrastructure/m4/ax_random_device.m4
@@ -0,0 +1,31 @@
+dnl @synopsis AX_RANDOM_DEVICE
+dnl
+dnl This macro will check for a random device, allowing the user to explicitly
+dnl set the path. The user uses '--with-random=FILE' as an argument to
+dnl configure.
+dnl
+dnl If A random device is found then HAVE_RANDOM_DEVICE is set to 1 and
+dnl RANDOM_DEVICE contains the path.
+dnl
+dnl @category Miscellaneous
+dnl @author Martin Ebourne
+dnl @version 2005/07/01
+dnl @license AllPermissive
+
+AC_DEFUN([AX_RANDOM_DEVICE], [
+  AC_ARG_WITH([random],
+    [AC_HELP_STRING([--with-random=FILE], [Use FILE as random number seed [auto-detected]])],
+    [RANDOM_DEVICE="$withval"],
+    [AC_CHECK_FILE("/dev/urandom", [RANDOM_DEVICE="/dev/urandom";],
+       [AC_CHECK_FILE("/dev/arandom", [RANDOM_DEVICE="/dev/arandom";],
+         [AC_CHECK_FILE("/dev/random", [RANDOM_DEVICE="/dev/random";])]
+       )])
+    ])
+  if test "x$RANDOM_DEVICE" != "x" ; then
+    AC_DEFINE([HAVE_RANDOM_DEVICE], 1,
+              [Define to 1 (and set RANDOM_DEVICE) if a random device is available])
+    AC_SUBST([RANDOM_DEVICE])
+    AC_DEFINE_UNQUOTED([RANDOM_DEVICE], ["$RANDOM_DEVICE"],
+                       [Define to the filename of the random device (and set HAVE_RANDOM_DEVICE)])
+  fi
+  ])dnl
diff --git a/infrastructure/m4/vl_lib_readline.m4 b/infrastructure/m4/vl_lib_readline.m4
new file mode 100644
index 00000000..7c9217d6
--- /dev/null
+++ b/infrastructure/m4/vl_lib_readline.m4
@@ -0,0 +1,106 @@
+dnl @synopsis VL_LIB_READLINE
+dnl
+dnl Searches for a readline compatible library. If found, defines
+dnl `HAVE_LIBREADLINE'. If the found library has the `add_history'
+dnl function, sets also `HAVE_READLINE_HISTORY'. Also checks for the
+dnl locations of the necessary include files and sets `HAVE_READLINE_H'
+dnl or `HAVE_READLINE_READLINE_H' and `HAVE_READLINE_HISTORY_H' or
+dnl 'HAVE_HISTORY_H' if the corresponding include files exists.
+dnl
+dnl The libraries that may be readline compatible are `libedit',
+dnl `libeditline' and `libreadline'. Sometimes we need to link a
+dnl termcap library for readline to work, this macro tests these cases
+dnl too by trying to link with `libtermcap', `libcurses' or
+dnl `libncurses' before giving up.
+dnl
+dnl Here is an example of how to use the information provided by this
+dnl macro to perform the necessary includes or declarations in a C
+dnl file:
+dnl
+dnl   #ifdef HAVE_LIBREADLINE
+dnl   #  if defined(HAVE_READLINE_READLINE_H)
+dnl   #    include <readline/readline.h>
+dnl   #  elif defined(HAVE_READLINE_H)
+dnl   #    include <readline.h>
+dnl   #  else /* !defined(HAVE_READLINE_H) */
+dnl   extern char *readline ();
+dnl   #  endif /* !defined(HAVE_READLINE_H) */
+dnl   char *cmdline = NULL;
+dnl   #else /* !defined(HAVE_READLINE_READLINE_H) */
+dnl     /* no readline */
+dnl   #endif /* HAVE_LIBREADLINE */
+dnl
+dnl   #ifdef HAVE_READLINE_HISTORY
+dnl   #  if defined(HAVE_READLINE_HISTORY_H)
+dnl   #    include <readline/history.h>
+dnl   #  elif defined(HAVE_HISTORY_H)
+dnl   #    include <history.h>
+dnl   #  else /* !defined(HAVE_HISTORY_H) */
+dnl   extern void add_history ();
+dnl   extern int write_history ();
+dnl   extern int read_history ();
+dnl   #  endif /* defined(HAVE_READLINE_HISTORY_H) */
+dnl     /* no history */
+dnl   #endif /* HAVE_READLINE_HISTORY */
+dnl
+dnl Modifications to add --enable-gnu-readline to work around licensing
+dnl problems between the traditional BSD licence and the GPL.
+dnl Martin Ebourne, 2005/7/11
+dnl
+dnl @category InstalledPackages
+dnl @author Ville Laurikari <vl@iki.fi>
+dnl @version 2002-04-04
+dnl @license AllPermissive
+
+AC_DEFUN([VL_LIB_READLINE], [
+  AC_ARG_ENABLE(
+    [gnu-readline],
+    AC_HELP_STRING([--enable-gnu-readline],
+                   [Allow use of GNU readline (may violate GNU licence)])
+  )
+  vl_gnu_readline_lib=""
+  if test "x$enable_gnu_readline" = "xyes"; then
+    vl_gnu_readline_lib=readline
+  fi
+  AC_CACHE_CHECK([for a readline compatible library],
+                 vl_cv_lib_readline, [
+    ORIG_LIBS="$LIBS"
+    for readline_lib in edit editline $vl_gnu_readline_lib; do
+      for termcap_lib in "" termcap curses ncurses; do
+        if test -z "$termcap_lib"; then
+          TRY_LIB="-l$readline_lib"
+        else
+          TRY_LIB="-l$readline_lib -l$termcap_lib"
+        fi
+        LIBS="$ORIG_LIBS $TRY_LIB"
+        AC_TRY_LINK_FUNC(readline, vl_cv_lib_readline="$TRY_LIB")
+        if test -n "$vl_cv_lib_readline"; then
+          break
+        fi
+      done
+      if test -n "$vl_cv_lib_readline"; then
+        break
+      fi
+    done
+    if test -z "$vl_cv_lib_readline"; then
+      vl_cv_lib_readline="no"
+      LIBS="$ORIG_LIBS"
+    fi
+  ])
+
+  if test "x$vl_cv_lib_readline" != "xno"; then
+    AC_DEFINE(HAVE_LIBREADLINE, 1,
+              [Define if you have a readline compatible library])
+    AC_CHECK_HEADERS(readline.h readline/readline.h)
+    AC_CACHE_CHECK([whether readline supports history],
+                   vl_cv_lib_readline_history, [
+      vl_cv_lib_readline_history="no"
+      AC_TRY_LINK_FUNC(add_history, vl_cv_lib_readline_history="yes")
+    ])
+    if test "x$vl_cv_lib_readline_history" = "xyes"; then
+      AC_DEFINE(HAVE_READLINE_HISTORY, 1,
+                [Define if your readline library has \`add_history'])
+      AC_CHECK_HEADERS(history.h readline/history.h)
+    fi
+  fi
+])dnl