From a067fb27c2843d27f767b691763a5ee5dc200d4d Mon Sep 17 00:00:00 2001
From: AaronMatthewBrown <devnull@localhost>
Date: Thu, 10 Dec 2009 14:20:48 +0000
Subject: [PATCH] Modify auto* scripts to handle the different uuid
 libraries/headers.

---
 configure.ac    | 31 +++++++++++++++++++++++++++++--
 src/Makefile.am |  4 ++--
 src/config.h.in | 12 ++++++++++++
 src/uuid.c      | 17 +++++++++++++----
 4 files changed, 56 insertions(+), 8 deletions(-)

diff --git a/configure.ac b/configure.ac
index ba1e9ce..625ee73 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,6 +20,7 @@ AC_PROG_RANLIB
 AC_PROG_LN_S
 AC_PROG_LIBTOOL
 
+
 # Sets a conditional makefile variable so that certain Makefile tasks will be
 # performed only on linux (currently, add -luuid to LD_FLAGS)
 AM_CONDITIONAL(LINUX, [case $host_os in linux*) true;; *) false;; esac]) 
@@ -28,8 +29,34 @@ AM_CONDITIONAL(LINUX, [case $host_os in linux*) true;; *) false;; esac])
 AC_HEADER_STDC
 
 # Check for uuid.h and a valid libuuid
-AC_CHECK_HEADER(uuid/uuid.h, ,AC_MSG_ERROR([uuid/uuid.h is not available]))
-AC_CHECK_LIB(uuid, uuid_generate, ,AC_MSG_ERROR([libuuid is not available]))
+AC_CHECK_FUNC(uuid_create)
+if test "${ac_cv_func_uuid_create}" = yes ; then
+    AC_DEFINE(HAVE_UUID_CREATE, [], "specifies if the uuid_create function defined")
+    use_uuid_library="no"
+else
+    AC_CHECK_FUNC(uuid_generate)
+    if test "${ac_cv_func_uuid_generate}" = yes ; then
+        AC_DEFINE(HAVE_UUID_GENERATE, [], "specifies if the uuid_generate function defined")
+        use_uuid_library="no"
+    else
+        AC_CHECK_LIB(uuid, uuid_generate, ,
+                        AC_MSG_ERROR([libuuid is not available]))
+        AC_DEFINE(HAVE_UUID_GENERATE, [], "specifies if the uuid_generate function defined")
+        use_uuid_library="yes"
+    fi
+fi
+
+AM_CONDITIONAL(USE_UUID_LIBRARY, test "${use_uuid_library}" = yes)
+
+AC_CHECK_HEADER(uuid.h)
+if test "${ac_cv_header_uuid_h}" = yes ; then
+    AC_DEFINE(HAVE_UUID_H, [], "specifies if the uuid.h header exists")
+else
+    AC_CHECK_HEADER(uuid/uuid.h)
+    if test "${ac_cv_header_uuid_uuid_h}" = yes ; then
+        AC_DEFINE(HAVE_UUID_UUID_H, [], "specifies if the uuid/uuid.h header exists")
+    fi
+fi
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
diff --git a/src/Makefile.am b/src/Makefile.am
index d2a10fe..ad6204c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -37,7 +37,7 @@ iperf3_CFLAGS           = -g -Wall
 iperf3_LDADD            = libiperf.a
 
 # Linux installs require the uuid library explicitly linked in
-if LINUX
+if USE_UUID_LIBRARY
 iperf3_LDFLAGS          = -luuid
 else
 iperf3_LDFLAGS          = 
@@ -73,7 +73,7 @@ iperf3_profile_CFLAGS   = -pg -Wall
 iperf3_profile_LDADD    = libiperf.a
 
 # Linux installs require the uuid library explicitly linked in
-if LINUX
+if USE_UUID_LIBRARY
 iperf3_profile_LDFLAGS  = -luuid
 else
 iperf3_profile_LDFLAGS  =
diff --git a/src/config.h.in b/src/config.h.in
index 9e9fa68..e764d3d 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -33,6 +33,18 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
+/* "specifies if the uuid_create function defined" */
+#undef HAVE_UUID_CREATE
+
+/* "specifies if the uuid_generate function defined" */
+#undef HAVE_UUID_GENERATE
+
+/* "specifies if the uuid.h header exists" */
+#undef HAVE_UUID_H
+
+/* "specifies if the uuid/uuid.h header exists" */
+#undef HAVE_UUID_UUID_H
+
 /* Name of package */
 #undef PACKAGE
 
diff --git a/src/uuid.c b/src/uuid.c
index e75b542..6f62eae 100644
--- a/src/uuid.c
+++ b/src/uuid.c
@@ -1,12 +1,19 @@
+#include "config.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include<string.h>
-#if defined(__FreeBSD__)
+
+#if defined(HAVE_UUID_H)
+#warning DOING SOMETHING
 #include <uuid.h>
-#else
+#elif defined(HAVE_UUID_UUID_H)
 #include <uuid/uuid.h>
+#else
+#error No uuid header file specified
 #endif
 
+
 /* XXX: this code is not portable: not all versions of linux install libuuidgen
 	by default
  * if not installed, may need to do something like this:
@@ -21,13 +28,15 @@ get_uuid(char *temp)
     char     *s;
     uuid_t    uu;
 
-#if defined(__FreeBSD__)
+#if defined(HAVE_UUID_CREATE)
     uuid_create(&uu, NULL);
     uuid_to_string(&uu, &s, 0);
-#else
+#elif defined(HAVE_UUID_GENERATE)
     s = (char *) malloc(37);
     uuid_generate(uu);
     uuid_unparse(uu, s);
+#else
+#error No uuid function specified
 #endif
     memcpy(temp, s, 37);
 }