libraries/OpenSceneGraph: Fix build when asio is installed.

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

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

libraries/OpenSceneGraph/OpenSceneGraph.SlackBuild

@@ -65,9 +65,19 @@ cd $PRGNAM-$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 \
+  -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 {} \+
+
+# 20220215 bkw: asio is an optional, auto-detected dependency. Our
+# version of asio is either too new or too old for this. Note
+# that this is Asio (the network library for C++), not
+# ASIO (the Windows low-latency audio API) nor wineasio, nor
+# /usr/include/boost/asio.hpp, whatever that even is. I don't see a
+# way to disable asio support via a cmake variable, so it has to be
+# surgery. Applying this patch disables the RestHttpDevice plugin,
+# hope that's OK.
+patch -p1 < $CWD/disable_asio.diff
 
 mkdir -p build
 cd build

libraries/OpenSceneGraph/disable_asio.diff

@@ -0,0 +1,13 @@
+diff -Naur OpenSceneGraph-OpenSceneGraph-3.6.5/CMakeLists.txt OpenSceneGraph-OpenSceneGraph-3.6.5.patched/CMakeLists.txt
+--- OpenSceneGraph-OpenSceneGraph-3.6.5/CMakeLists.txt	2020-01-31 06:03:07.000000000 -0500
++++ OpenSceneGraph-OpenSceneGraph-3.6.5.patched/CMakeLists.txt	2022-02-15 01:01:02.259927943 -0500
+@@ -763,9 +763,6 @@
+     FIND_PACKAGE(GtkGl)
+     FIND_PACKAGE(DirectInput)
+     FIND_PACKAGE(NVTT)
+-    IF (NOT WIN32)
+-        FIND_PACKAGE(Asio)
+-    ENDIF()
+     FIND_PACKAGE(ZeroConf)
+ 
+     FIND_PACKAGE(LIBLAS)