realpath: : No such file or directory

[Jung-uk Kim]

On Wednesday 12 May 2010 03:50 pm, Mike Jakubik wrote:
> On 5/12/2010 3:07 PM, Kostik Belousov wrote:
> > The realpath(1) was given an empty path.
> >
> > According to SUSv4, realpath(3) should return ENOENT if "A
> > component of file_name does not name an existing file or
> > file_name points to an empty string." This was recently brought
> > into standard compliance.
> >
> > Why javavm passes empty path to realpath(1), I do not know.
>
> It appears the cause is because ${JAVA_HOME} is an empty variable.
>
> ---
> #
> # Set up an appropriate JAVA_HOME
> #
> setJavaHome() {
>
> echo Debug JAVA_HOME:  ${JAVA_HOME}
> echo Debug JAVAVM_PREFIX: ${_JAVAVM_PREFIX}
>
>      # Use JAVA_HOME if it's set, unless its set to /usr/local
>      if [ -n "${JAVA_HOME}" -a \
>           "`realpath "${JAVA_HOME}"`" != "`realpath
> "${_JAVAVM_PREFIX}"`" ]; then
>          if [ -n "${JAVA_HOME}" -a -f
> "${JAVA_HOME}/bin/${_JAVAVM_PROG}" ]; then
>              _JAVAVM_PROG_PATH="${JAVA_HOME}/bin"
>              return 0
>          elif [ -n "${JAVA_HOME}" -a \
>                 -f "${JAVA_HOME}/jre/bin/${_JAVAVM_PROG}" ]; then
>              _JAVAVM_PROG_PATH="${JAVA_HOME}/jre/bin"
>              return 0
>          fi
>      fi
>
>      unset JAVA_HOME
> ---
>
> When i run the above:
>
> + setJavaHome
> + echo Debug JAVA_HOME:
> Debug JAVA_HOME:
> + echo Debug JAVAVM_PREFIX: /usr/local
> Debug JAVAVM_PREFIX: /usr/local
> + realpath ''
> realpath: : No such file or directory

The attached patch should fix the annoyance.

Jung-uk Kim
-------------- next part --------------
--- javavmwrapper/Makefile.orig	2010-05-13 15:40:45.000000000 -0400
+++ javavmwrapper/Makefile	2010-05-13 15:31:00.000000000 -0400
@@ -8,7 +8,7 @@
 #
 
 PORTNAME=	javavmwrapper
-PORTVERSION=	2.3.4
+PORTVERSION=	2.3.5
 CATEGORIES=	java
 MASTER_SITES=	# none
 DISTFILES=	# none
--- javavmwrapper/src/javavmwrapper.sh.orig	2010-01-18 17:42:58.000000000 -0500
+++ javavmwrapper/src/javavmwrapper.sh	2010-05-13 15:30:32.000000000 -0400
@@ -479,16 +479,16 @@
 #
 setJavaHome() {
     # Use JAVA_HOME if it's set, unless its set to %%PREFIX%%
-    if [ -n "${JAVA_HOME}" -a \
-         "`realpath "${JAVA_HOME}"`" != "`realpath "${_JAVAVM_PREFIX}"`" ]; then
-        if [ -n "${JAVA_HOME}" -a -f "${JAVA_HOME}/bin/${_JAVAVM_PROG}" ]; then
-            _JAVAVM_PROG_PATH="${JAVA_HOME}/bin"
-            return 0
-        elif [ -n "${JAVA_HOME}" -a \
-               -f "${JAVA_HOME}/jre/bin/${_JAVAVM_PROG}" ]; then
-            _JAVAVM_PROG_PATH="${JAVA_HOME}/jre/bin"
-            return 0
-        fi
+    if [ -n "${JAVA_HOME}" ]; then
+        if [ "`realpath "${JAVA_HOME}"`" != "`realpath "${_JAVAVM_PREFIX}"`" ]; then
+	    if [ -f "${JAVA_HOME}/bin/${_JAVAVM_PROG}" ]; then
+		_JAVAVM_PROG_PATH="${JAVA_HOME}/bin"
+		return 0
+	    elif [ -f "${JAVA_HOME}/jre/bin/${_JAVAVM_PROG}" ]; then
+		_JAVAVM_PROG_PATH="${JAVA_HOME}/jre/bin"
+		return 0
+	    fi
+	fi
     fi
 
     unset JAVA_HOME