Fix java detection as unprivileged user.

If you have an inaccessible directory inside
JAVA_HOME, find returns an error and the test fails.

I found this on Fedora, where /usr/lib64/audit is only
readable by root, and my JAVA_HOME was set to /usr

Signed-off-by: Florian Forster <octo@collectd.org>

diff --git a/configure.in b/configure.in
index cd24f53..98395ed 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1980,7 +1980,7 @@ then
        if test -d "$with_java_home"
        then
                AC_MSG_CHECKING([for jni.h])
-               TMPDIR=`find "$with_java_home" -name jni.h -type f -exec 'dirname' '{}' ';' | head -n 1`
+               TMPDIR=`find "$with_java_home" -name jni.h -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
                if test "x$TMPDIR" != "x"
                then
                        AC_MSG_RESULT([found in $TMPDIR])
@@ -1990,7 +1990,7 @@ then
                fi
 
                AC_MSG_CHECKING([for jni_md.h])
-               TMPDIR=`find "$with_java_home" -name jni_md.h -type f -exec 'dirname' '{}' ';' | head -n 1`
+               TMPDIR=`find "$with_java_home" -name jni_md.h -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
                if test "x$TMPDIR" != "x"
                then
                        AC_MSG_RESULT([found in $TMPDIR])
@@ -2000,7 +2000,7 @@ then
                fi
 
                AC_MSG_CHECKING([for libjvm.so])
-               TMPDIR=`find "$with_java_home" -name libjvm.so -type f -exec 'dirname' '{}' ';' | head -n 1`
+               TMPDIR=`find "$with_java_home" -name libjvm.so -type f -exec 'dirname' '{}' ';' 2>/dev/null | head -n 1`
                if test "x$TMPDIR" != "x"
                then
                        AC_MSG_RESULT([found in $TMPDIR])
@@ -2012,7 +2012,7 @@ then
                if test "x$JAVAC" = "x"
                then
                        AC_MSG_CHECKING([for javac])
-                       TMPDIR=`find "$with_java_home" -name javac -type f | head -n 1`
+                       TMPDIR=`find "$with_java_home" -name javac -type f 2>/dev/null | head -n 1`
                        if test "x$TMPDIR" != "x"
                        then
                                JAVAC="$TMPDIR"
@@ -2024,7 +2024,7 @@ then
                if test "x$JAR" = "x"
                then
                        AC_MSG_CHECKING([for jar])
-                       TMPDIR=`find "$with_java_home" -name jar -type f | head -n 1`
+                       TMPDIR=`find "$with_java_home" -name jar -type f 2>/dev/null | head -n 1`
                        if test "x$TMPDIR" != "x"
                        then
                                JAR="$TMPDIR"