I find that an out-of-the-box installation of OSSP uuid 1.6.0 installs

itself as libuuid, not libossp-uuid which was the only case expected by
our build support.  Install a configure test to determine which name
to use (and to check that the library is present at all).

configure

@@ -314,7 +314,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS configure_args build build_cpu build_vendor build_os host host_cpu host_vendor host_os PORTNAME docdir enable_nls WANTED_LANGUAGES default_port enable_shared enable_rpath enable_debug enable_profiling DTRACE DTRACEFLAGS enable_dtrace CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP GCC TAS autodepend INCLUDES enable_thread_safety with_tcl with_perl with_python with_gssapi with_krb5 krb_srvtab with_pam with_ldap with_bonjour with_openssl with_ossp_uuid XML2_CONFIG with_libxml with_libxslt with_system_tzdata with_zlib EGREP ELF_SYS LDFLAGS_SL LD with_gnu_ld ld_R_works RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP STRIP_STATIC_LIB STRIP_SHARED_LIB TAR LN_S AWK YACC YFLAGS FLEX FLEXFLAGS PERL perl_archlibexp perl_privlibexp perl_useshrplib perl_embed_ldflags PYTHON python_version python_configdir python_includespec python_libdir python_libspec python_additional_libs HAVE_IPV6 LIBOBJS acx_pthread_config PTHREAD_CC PTHREAD_LIBS PTHREAD_CFLAGS LDAP_LIBS_FE LDAP_LIBS_BE HAVE_POSIX_SIGNALS MSGFMT MSGMERGE XGETTEXT localedir TCLSH TCL_CONFIG_SH TCL_INCLUDE_SPEC TCL_LIB_FILE TCL_LIBS TCL_LIB_SPEC TCL_SHARED_BUILD TCL_SHLIB_LD_LIBS NSGMLS JADE have_docbook DOCBOOKSTYLE COLLATEINDEX SGMLSPL vpath_build LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS configure_args build build_cpu build_vendor build_os host host_cpu host_vendor host_os PORTNAME docdir enable_nls WANTED_LANGUAGES default_port enable_shared enable_rpath enable_debug enable_profiling DTRACE DTRACEFLAGS enable_dtrace CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP GCC TAS autodepend INCLUDES enable_thread_safety with_tcl with_perl with_python with_gssapi with_krb5 krb_srvtab with_pam with_ldap with_bonjour with_openssl with_ossp_uuid XML2_CONFIG with_libxml with_libxslt with_system_tzdata with_zlib EGREP ELF_SYS LDFLAGS_SL LD with_gnu_ld ld_R_works RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP STRIP_STATIC_LIB STRIP_SHARED_LIB TAR LN_S AWK YACC YFLAGS FLEX FLEXFLAGS PERL perl_archlibexp perl_privlibexp perl_useshrplib perl_embed_ldflags PYTHON python_version python_configdir python_includespec python_libdir python_libspec python_additional_libs OSSP_UUID_LIBS HAVE_IPV6 LIBOBJS acx_pthread_config PTHREAD_CC PTHREAD_LIBS PTHREAD_CFLAGS LDAP_LIBS_FE LDAP_LIBS_BE HAVE_POSIX_SIGNALS MSGFMT MSGMERGE XGETTEXT localedir TCLSH TCL_CONFIG_SH TCL_INCLUDE_SPEC TCL_LIB_FILE TCL_LIBS TCL_LIB_SPEC TCL_SHARED_BUILD TCL_SHLIB_LD_LIBS NSGMLS JADE have_docbook DOCBOOKSTYLE COLLATEINDEX SGMLSPL vpath_build LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -7948,6 +7948,152 @@ fi
 
 fi
 
+# for contrib/uuid-ossp
+if test "$with_ossp_uuid" = yes ; then
+  echo "$as_me:$LINENO: checking for uuid_export in -lossp-uuid" >&5
+echo $ECHO_N "checking for uuid_export in -lossp-uuid... $ECHO_C" >&6
+if test "${ac_cv_lib_ossp_uuid_uuid_export+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lossp-uuid  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char uuid_export ();
+int
+main ()
+{
+uuid_export ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_ossp_uuid_uuid_export=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_ossp_uuid_uuid_export=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_ossp_uuid_uuid_export" >&5
+echo "${ECHO_T}$ac_cv_lib_ossp_uuid_uuid_export" >&6
+if test $ac_cv_lib_ossp_uuid_uuid_export = yes; then
+  OSSP_UUID_LIBS="-lossp-uuid"
+else
+  echo "$as_me:$LINENO: checking for uuid_export in -luuid" >&5
+echo $ECHO_N "checking for uuid_export in -luuid... $ECHO_C" >&6
+if test "${ac_cv_lib_uuid_uuid_export+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-luuid  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char uuid_export ();
+int
+main ()
+{
+uuid_export ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_uuid_uuid_export=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_uuid_uuid_export=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_uuid_uuid_export" >&5
+echo "${ECHO_T}$ac_cv_lib_uuid_uuid_export" >&6
+if test $ac_cv_lib_uuid_uuid_export = yes; then
+  OSSP_UUID_LIBS="-luuid"
+else
+  { { echo "$as_me:$LINENO: error: library 'ossp-uuid' or 'uuid' is required for OSSP-UUID" >&5
+echo "$as_me: error: library 'ossp-uuid' or 'uuid' is required for OSSP-UUID" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+fi
+
+fi
+
+
 
 ##
 ## Header files
@@ -25818,6 +25964,7 @@ s,@python_includespec@,$python_includespec,;t t
 s,@python_libdir@,$python_libdir,;t t
 s,@python_libspec@,$python_libspec,;t t
 s,@python_additional_libs@,$python_additional_libs,;t t
+s,@OSSP_UUID_LIBS@,$OSSP_UUID_LIBS,;t t
 s,@HAVE_IPV6@,$HAVE_IPV6,;t t
 s,@LIBOBJS@,$LIBOBJS,;t t
 s,@acx_pthread_config@,$acx_pthread_config,;t t

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.535 2007/11/05 17:43:20 momjian Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.536 2007/11/13 00:13:19 tgl Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -793,6 +793,16 @@ if test "$with_libxslt" = yes ; then
   AC_CHECK_LIB(xslt, xsltLibxmlVersion, [], [AC_MSG_ERROR([library 'xslt' is required for XSLT support])])
 fi
 
+# for contrib/uuid-ossp
+if test "$with_ossp_uuid" = yes ; then
+  AC_CHECK_LIB(ossp-uuid, uuid_export,
+    [OSSP_UUID_LIBS="-lossp-uuid"],
+    [AC_CHECK_LIB(uuid, uuid_export,
+      [OSSP_UUID_LIBS="-luuid"],
+      [AC_MSG_ERROR([library 'ossp-uuid' or 'uuid' is required for OSSP-UUID])])])
+fi
+AC_SUBST(OSSP_UUID_LIBS)
+
 
 ##
 ## Header files

contrib/uuid-ossp/Makefile

-# $PostgreSQL: pgsql/contrib/uuid-ossp/Makefile,v 1.3 2007/11/10 23:59:51 momjian Exp $
+# $PostgreSQL: pgsql/contrib/uuid-ossp/Makefile,v 1.4 2007/11/13 00:13:19 tgl Exp $
 
 MODULE_big = uuid-ossp
 OBJS = uuid-ossp.o
 DATA_built = uuid-ossp.sql
 DATA = uninstall_uuid-ossp.sql
 
-SHLIB_LINK += -lossp-uuid
+SHLIB_LINK += $(OSSP_UUID_LIBS)
 
 ifdef USE_PGXS
 PG_CONFIG = pg_config

src/Makefile.global.in

 # -*-makefile-*-
-# $PostgreSQL: pgsql/src/Makefile.global.in,v 1.239 2007/09/28 22:25:49 tgl Exp $
+# $PostgreSQL: pgsql/src/Makefile.global.in,v 1.240 2007/11/13 00:13:19 tgl Exp $
 
 #------------------------------------------------------------------------------
 # All PostgreSQL makefiles include this file and use the variables it sets,
@@ -228,6 +228,7 @@ DTRACEFLAGS = @DTRACEFLAGS@
 LIBS = @LIBS@
 LDAP_LIBS_FE = @LDAP_LIBS_FE@
 LDAP_LIBS_BE = @LDAP_LIBS_BE@
+OSSP_UUID_LIBS = @OSSP_UUID_LIBS@
 LD = @LD@
 with_gnu_ld = @with_gnu_ld@
 ld_R_works = @ld_R_works@