games/dustrac: Fix 15.0 build.

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

games/dustrac/dustrac.SlackBuild

@@ -39,9 +39,6 @@ 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
@@ -76,9 +73,12 @@ 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 {} \+
+
+# 20220220 bkw: C++ is an ever-moving target.
+sed -i '1i#include <stdexcept>' src/game/audio/*.cpp
 
 cmake -G "Unix Makefiles" \
   -DCMAKE_INSTALL_PREFIX:PATH="/usr" \
@@ -93,9 +93,10 @@ cmake -G "Unix Makefiles" \
 
 make VERBOSE=1
 make install DESTDIR=$PKG
+strip $PKG/usr/games/*
 
-find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
-  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+# 20220220 bkw: someone might not have /usr/games in $PATH
+sed -i '/^Exec/s,=,=/usr/games/,' $PKG/usr/share/applications/*.desktop
 
 cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild