diff --git a/jenkins-R-dist.sh b/jenkins-R-dist.sh
index 0da610cb..137463cb 100644
--- a/jenkins-R-dist.sh
+++ b/jenkins-R-dist.sh
@@ -14,8 +14,8 @@ if [ -z "$VER" ]; then
  ver_patch=$((ver_patch+1))
  VER="${ver_major}.${ver_minor}.${ver_patch}"
 fi
-HEAD=`svn st -v configure.ac | awk '{print $1}')`
 if [ "$REL" = 'HEAD' ]; then
+ HEAD=`svn st -v configure.ac | awk '{print $1}')`
  REL="$HEAD"
 fi
 export VER
diff --git a/jenkins-dist.sh b/jenkins-dist.sh
index d55d5c01..167a92dd 100755
--- a/jenkins-dist.sh
+++ b/jenkins-dist.sh
@@ -136,9 +136,11 @@ DISTNAME="${NAME}${REPOS_TAG}-${VERSION}${VER_NUMTAG}"
 DIST_SANDBOX=.dist_sandbox
 #DISTPATH="$DIST_SANDBOX/$DISTNAME"
 DISTPATH="."
+GIT_COMMIT=`git rev-parse HEAD`
 
 echo "Distribution will be named: $DISTNAME"
 echo " release branch's revision: $REVISION"
+echo "                git commit: $GIT_COMMIT"
 echo "     executable's revision: $REVISION_SVN"
 echo "     constructed from path: /$REPOS_PATH"
 echo "              release date: $RELEASE_DATE"
@@ -223,6 +225,7 @@ do
      -e "/#define *VER_MINOR/s/[0-9]\+/$ver_minor/" \
      -e "/#define *VER_PATCH/s/[0-9]\+/$ver_patch/" \
      -e "/#define *VER_REVISION/s/[0-9]\+/$REVISION_SVN/" \
+     -e "/#define *GIT_COMMIT/s/[0-9a-f]\+/$GIT_COMMIT/" \
      -e "s/@RELEASE_DATE@/$RELEASE_DATE/g" \
      -e "s/@PHREEQC_VER@/$VER/g" \
      -e "s/@PHREEQC_DATE@/$RELEASE_DATE/g" \
diff --git a/src/IPhreeqcLib.cpp b/src/IPhreeqcLib.cpp
index df489636..2cd59d89 100644
--- a/src/IPhreeqcLib.cpp
+++ b/src/IPhreeqcLib.cpp
@@ -781,6 +781,7 @@ SetBasicCallback(int id, double (*fcn)(double x1, double x2, const char *str, vo
 	}
 	return IPQ_BADINSTANCE;
 }
+#if !defined(R_SO)
 #ifdef IPHREEQC_NO_FORTRAN_MODULE
 IPQ_RESULT
 SetBasicFortranCallback(int id, double (*fcn)(double *x1, double *x2, char *str, size_t l))
@@ -805,7 +806,8 @@ SetBasicFortranCallback(int id, double (*fcn)(double *x1, double *x2, const char
 	}
 	return IPQ_BADINSTANCE;
 }
-#endif
+#endif /* IPHREEQC_NO_FORTRAN_MODULE */
+#endif /* !defined(R_SO) */
 IPQ_RESULT
 SetCurrentSelectedOutputUserNumber(int id, int n)
 {
diff --git a/src/Version.h b/src/Version.h
index 562e2f53..94c88663 100644
--- a/src/Version.h
+++ b/src/Version.h
@@ -3,6 +3,7 @@
 #define VER_MINOR      0
 #define VER_PATCH      0
 #define VER_REVISION   0
+#define GIT_COMMIT     0000000000000000000000000000000000000000
 
 #define RELEASE_DATE           "@RELEASE_DATE@"