diff --git a/configure.in b/configure.in
index 34d94b4f7da..5dc0e8b1e81 100644
--- a/configure.in
+++ b/configure.in
@@ -454,7 +454,7 @@ AC_PATH_PROG(PS, ps, ps)
 AC_MSG_CHECKING("how to check if pid exists")
 PS=$ac_cv_path_PS
 # Linux style
-if $PS p $$ 2> /dev/null | grep $0 > /dev/null
+if $PS p $$ 2> /dev/null | grep `echo $0 | sed s/\-//` > /dev/null
 then
   FIND_PROC="$PS p \$\$PID | grep -v grep | grep \$\$MYSQLD > /dev/null"
 # Solaris
@@ -1946,7 +1946,7 @@ esac
 
 # isinf() could be a function or a macro (HPUX)
 AC_MSG_CHECKING(for isinf with <math.h>)
-AC_TRY_LINK([#include <math.h>], [float f = 0.0; isinf(f)],
+AC_TRY_LINK([#include <math.h>], [float f = 0.0; int r = isinf(f); return r],
  AC_MSG_RESULT(yes)
  AC_DEFINE(HAVE_ISINF, [1], [isinf() macro or function]),
  AC_MSG_RESULT(no))
diff --git a/include/my_global.h b/include/my_global.h
index 909755aef87..4a9e1673de4 100644
--- a/include/my_global.h
+++ b/include/my_global.h
@@ -111,7 +111,7 @@
 
 
 /* Fix problem with S_ISLNK() on Linux */
-#if defined(TARGET_OS_LINUX)
+#if defined(TARGET_OS_LINUX) || defined(__GLIBC__)
 #undef  _GNU_SOURCE
 #define _GNU_SOURCE 1
 #endif
diff --git a/ndb/include/ndb_global.h.in b/ndb/include/ndb_global.h.in
index 43f90e1f8b5..122b0edc400 100644
--- a/ndb/include/ndb_global.h.in
+++ b/ndb/include/ndb_global.h.in
@@ -128,12 +128,8 @@ extern "C" {
 
 #include "ndb_init.h"
 
-#ifdef SCO
-
 #ifndef PATH_MAX
 #define PATH_MAX 1024
 #endif
 
-#endif /* SCO */
-
 #endif
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 3eb3d39de1e..9f143173827 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -43,14 +43,11 @@ INCLUDES =		-I$(top_builddir)/include -I$(top_srcdir)/include \
 LIBS =			@CLIENT_LIBS@
 LDADD =			@CLIENT_EXTRA_LDFLAGS@ \
                         $(top_builddir)/libmysql/libmysqlclient.la
-if HAVE_NETWARE
+
 mysql_client_test_LDADD= $(LDADD) $(CXXLDFLAGS)
 mysql_client_test_SOURCES= mysql_client_test.c $(yassl_dummy_link_fix) \
-			../mysys/my_memmem.c
-else
-mysql_client_test_LDADD= $(LDADD) $(CXXLDFLAGS) -L../mysys -lmysys
-mysql_client_test_SOURCES= mysql_client_test.c $(yassl_dummy_link_fix)
-endif
+			$(top_srcdir)/mysys/my_memmem.c
+
 insert_test_SOURCES=       insert_test.c $(yassl_dummy_link_fix)
 select_test_SOURCES=       select_test.c $(yassl_dummy_link_fix)
 insert_test_DEPENDENCIES=	$(LIBRARIES) $(pkglib_LTLIBRARIES)