libraries/physfs: Miscellaneous cleanups.

Cleaned up build and added some fixes for slackware 13.1.

libraries/physfs/physfs.SlackBuild

@@ -24,10 +24,19 @@
 
 PRGNAM=physfs
 VERSION=2.0.0
-ARCH=${ARCH:-i486}
 BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
+# Automatically determine the architecture we're building on:
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) export ARCH=i486 ;;
+    arm*) export ARCH=arm ;;
+    # Unless $ARCH is already set, use uname -m for all other archs:
+       *) export ARCH=$( uname -m ) ;;
+  esac
+fi
+
 CWD=$(pwd)
 TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
@@ -42,7 +51,9 @@ elif [ "$ARCH" = "i686" ]; then
 elif [ "$ARCH" = "x86_64" ]; then
   SLKCFLAGS="-O2 -fPIC"
   LIBDIRSUFFIX="64"
-fi
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
 
 rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
@@ -55,11 +66,17 @@ chmod -R a-s,u+w,go+r-w .
 
 # LIB_SUFFIX is ignored work around it.
 sed -i -e "s|DESTINATION lib|DESTINATION lib${LIBDIRSUFFIX}|g" \
+       -e "s:-Werror::" \
   CMakeLists.txt
 
 cmake \
   -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
   -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
+  -DPHYSFS_ARCHIVE_7Z=OFF \
+  -DPHYSFS_BUILD_SHARED=ON \
+  -DPHYSFS_BUILD_TEST=OFF \
+  -DPHYSFS_BUILD_WX_TEST=OFF \
+  -DPHYSFS_INTERNAL_ZLIB=OFF \
   -DCMAKE_BUILD_TYPE=Release \
   -DCMAKE_INSTALL_PREFIX=/usr \
   -DLIB_SUFFIX:STRING=${LIBDIRSUFFIX} || exit 1