graphics/LDView: Fix 15.0 build.

Signed-off-by: B. Watson <yalhcru@gmail.com>

graphics/LDView/LDView.SlackBuild

@@ -24,6 +24,8 @@
 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# 20220222 bkw: Modified by SlackBuilds.org: fix build on 15.0.
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=LDView
@@ -41,9 +43,6 @@ if [ -z "$ARCH" ]; then
   esac
 fi
 
-# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
-# the name of the created package would be, and then exit. This information
-# could be useful to other scripts.
 if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
   echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
   exit 0
@@ -78,9 +77,9 @@ cd $SRCNAM-$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 \
+  -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 {} \;
+ -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+
 
 cd QT
 
@@ -92,16 +91,14 @@ if [ "$ARCH" = "x86_64" ]; then
 else
     PLATFORM=linux-g++-32
 fi
-qmake LIBS+=-lboost_system -spec $PLATFORM
-lrelease LDView.pro
+qmake-qt5 QMAKE_CXXFLAGS+="-fpermissive" LIBS+=-lboost_system -spec $PLATFORM
+lrelease-qt5 LDView.pro
 make "TESTING=-I ../gl2ps -I ../3rdParty/tinyxml"
 
 
 # Install manually
 mkdir -p $PKG/usr/bin
-cp -a $PRGNAM $PKG/usr/bin/${PRGNAM}
-strip --strip-unneeded $PKG/usr/bin/${PRGNAM}
-chmod 0755 $PKG/usr/bin/$PRGNAM
+install -s -m0755 $PRGNAM $PKG/usr/bin/$PRGNAM
 cd ..
 
 # Sample files, font, translations