diff --git a/academic/wmcalc/README b/academic/wmcalc/README
index 464a9dc1a2..6b8bee5461 100644
--- a/academic/wmcalc/README
+++ b/academic/wmcalc/README
@@ -1,11 +1,6 @@
+wmcalc (calculator dockapp for windowmaker)
+
 wmcalc is a program designed to act as a simple four-function calculator.
 It is different from other calculator programs, however in that it is
-designed to take up very little desktop space.  As such, it can be left
+designed to take up very little desktop space. As such, it can be left
 running on the desktop at all times.
-
-Note: The coding of this DockApp seems incredibly unorganized and there
-are several xpm's that are almost the same thing. It also seems that
-for whatever reason the author uses a xpm with the default WM backdrop,
-meaning it wont fit in with themed desktops. I may have a patch in the
-future that fixes this and also make it use "wmcalc1.xpm". For now,
-enjoy it for what it is, a simple WindowMaker calculator.
diff --git a/academic/wmcalc/doinst.sh b/academic/wmcalc/doinst.sh
index 191f720108..2cb6861d40 100644
--- a/academic/wmcalc/doinst.sh
+++ b/academic/wmcalc/doinst.sh
@@ -1,3 +1,8 @@
+if [ -e usr/share/icons/hicolor/icon-theme.cache ]; then
+  if [ -x /usr/bin/gtk-update-icon-cache ]; then
+    /usr/bin/gtk-update-icon-cache usr/share/icons/hicolor >/dev/null 2>&1
+  fi
+fi
 
 config() {
   NEW="$1"
diff --git a/academic/wmcalc/slack-desc b/academic/wmcalc/slack-desc
index 8a26dc0b9d..7b7d82b3a1 100644
--- a/academic/wmcalc/slack-desc
+++ b/academic/wmcalc/slack-desc
@@ -6,14 +6,14 @@
 # customary to leave one space after the ':' except on otherwise blank lines.
 
       |-----handy-ruler------------------------------------------------------|
-wmcalc: wmcalc (Calculator DockApp)
+wmcalc: wmcalc (calculator dockapp for windowMaker)
 wmcalc:
 wmcalc: wmcalc is a program designed to act as a simple four-function
-wmcalc: calculator.  It is different from other calculator programs, however
-wmcalc: in that it is designed to take up very little desktop space.  As such,
+wmcalc: calculator. It is different from other calculator programs, however
+wmcalc: in that it is designed to take up very little desktop space. As such,
 wmcalc: it can be left running on the desktop at all times.
 wmcalc:
-wmcalc: Homepage: http://windowmaker.org/dockapps/?name=wmcalc
+wmcalc:
 wmcalc:
 wmcalc:
 wmcalc:
diff --git a/academic/wmcalc/wmcalc.SlackBuild b/academic/wmcalc/wmcalc.SlackBuild
index c8e2eb286b..0b75dc766c 100644
--- a/academic/wmcalc/wmcalc.SlackBuild
+++ b/academic/wmcalc/wmcalc.SlackBuild
@@ -27,6 +27,8 @@
 
 # Now maintained by B. Watson <yalhcru@gmail.com>
 
+# 20180911 bkw: update for v0.7.
+
 # 20160816 bkw:
 # - take over maintenance
 # - BUILD=2
@@ -42,14 +44,10 @@
 # - previous version installed man page in wrong place
 
 PRGNAM=wmcalc
-VERSION=${VERSION:-0.6}
+VERSION=${VERSION:-0.7}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
-# annoyingly, the directory inside the tarball isn't named $PRGNAM-$VERSION
-# or even just $PRGNAM. Instead:
-TARDIR=dockapps-43ddcdf
-
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
     i?86) ARCH=i586 ;;
@@ -82,19 +80,24 @@ set -e
 rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
-rm -rf $TARDIR
+rm -rf $PRGNAM-$VERSION
 tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
-cd $TARDIR
+cd $PRGNAM-$VERSION
 chown -R root:root .
-find -L . \
- \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
-  -o -perm 511 \) -exec chmod 755 {} \; -o \
- \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
-  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
+        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+
 
-make CFLAGS="$SLKCFLAGS"
-strip $PRGNAM
-make install DESTDIR=$PKG PREFIX=/usr MANDIR=/usr/man/man1
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --localstatedir=/var \
+  --mandir=/usr/man \
+  --docdir=/usr/doc/$PRGNAM-$VERSION \
+  --build=$ARCH-slackware-linux
+make install-strip DESTDIR=$PKG PREFIX=/usr MANDIR=/usr/man/man1
 gzip -9 $PKG/usr/man/man1/$PRGNAM.1
 
 mv $PKG/etc/$PRGNAM.conf $PKG/etc/$PRGNAM.conf.new
diff --git a/academic/wmcalc/wmcalc.info b/academic/wmcalc/wmcalc.info
index 5dc93252fe..09b7df1b66 100644
--- a/academic/wmcalc/wmcalc.info
+++ b/academic/wmcalc/wmcalc.info
@@ -1,8 +1,8 @@
 PRGNAM="wmcalc"
-VERSION="0.6"
+VERSION="0.7"
 HOMEPAGE="https://www.dockapps.net/wmcalc"
-DOWNLOAD="https://www.dockapps.net/download/wmcalc-0.6.tar.gz"
-MD5SUM="0d84c4e1cdb8742c5abf03a34ea03540"
+DOWNLOAD="https://www.dockapps.net/download/wmcalc-0.7.tar.gz"
+MD5SUM="1ccc2515828f2cfdec8e5be0e9f996c6"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES=""