diff --git a/direct/src/p3d/Packager.py b/direct/src/p3d/Packager.py
index 122a4ed206..ccb8589d8c 100644
--- a/direct/src/p3d/Packager.py
+++ b/direct/src/p3d/Packager.py
@@ -2484,6 +2484,7 @@ class Packager:
             GlobPattern('libthr.so*'),
             GlobPattern('ld-linux.so*'),
             GlobPattern('ld-linux-*.so*'),
+            GlobPattern('librt.so*'),
             ]
 
         # A Loader for loading models.
diff --git a/direct/src/p3d/SeqValue.py b/direct/src/p3d/SeqValue.py
index e83c44dc6a..958132f74b 100644
--- a/direct/src/p3d/SeqValue.py
+++ b/direct/src/p3d/SeqValue.py
@@ -88,4 +88,3 @@ class SeqValue:
 
     def __str__(self):
         return 'SeqValue%s' % (repr(self.value))
-
diff --git a/makepanda/makepanda.py b/makepanda/makepanda.py
index bf92586c12..4865b2b65a 100755
--- a/makepanda/makepanda.py
+++ b/makepanda/makepanda.py
@@ -786,9 +786,9 @@ if (COMPILER=="GCC"):
         SmartPkgEnable("ARTOOLKIT", "",          ("AR"), "AR/ar.h")
         SmartPkgEnable("FCOLLADA",  "",          ChooseLib(fcollada_libs, "FCOLLADA"), ("FCollada", "FCollada/FCollada.h"))
         SmartPkgEnable("ASSIMP",    "assimp", ("assimp"), "assimp")
-        SmartPkgEnable("FFMPEG",    ffmpeg_libs, ffmpeg_libs, ffmpeg_libs)
-        SmartPkgEnable("SWSCALE",   "libswscale", "libswscale", ("libswscale", "libswscale/swscale.h"), target_pkg = "FFMPEG")
-        SmartPkgEnable("SWRESAMPLE","libswresample", "libswresample", ("libswresample", "libswresample/swresample.h"), target_pkg = "FFMPEG")
+        SmartPkgEnable("FFMPEG",    ffmpeg_libs, ffmpeg_libs, ("libavformat/avformat.h", "libavcodec/avcodec.h", "libavutil/avutil.h"))
+        SmartPkgEnable("SWSCALE",   "libswscale", "libswscale", ("libswscale/swscale.h"), target_pkg = "FFMPEG", thirdparty_dir = "ffmpeg")
+        SmartPkgEnable("SWRESAMPLE","libswresample", "libswresample", ("libswresample/swresample.h"), target_pkg = "FFMPEG", thirdparty_dir = "ffmpeg")
         SmartPkgEnable("FFTW",      "",          ("rfftw", "fftw"), ("fftw.h", "rfftw.h"))
         SmartPkgEnable("FMODEX",    "",          ("fmodex"), ("fmodex", "fmodex/fmod.h"))
         SmartPkgEnable("FREETYPE",  "freetype2", ("freetype"), ("freetype2", "freetype2/freetype/freetype.h"))
diff --git a/makepanda/makepandacore.py b/makepanda/makepandacore.py
index 1b87ed7c9d..ecbb5412c5 100644
--- a/makepanda/makepandacore.py
+++ b/makepanda/makepandacore.py
@@ -1457,7 +1457,7 @@ def ChooseLib(libs, thirdparty=None):
             print(ColorText("cyan", "Couldn't find any of the libraries " + ", ".join(libs)))
         return libs[0]
 
-def SmartPkgEnable(pkg, pkgconfig = None, libs = None, incs = None, defs = None, framework = None, target_pkg = None, tool = "pkg-config"):
+def SmartPkgEnable(pkg, pkgconfig = None, libs = None, incs = None, defs = None, framework = None, target_pkg = None, tool = "pkg-config", thirdparty_dir = None):
     global PKG_LIST_ALL
     if (pkg in PkgListGet() and PkgSkip(pkg)):
         return
@@ -1487,16 +1487,12 @@ def SmartPkgEnable(pkg, pkgconfig = None, libs = None, incs = None, defs = None,
 
     custom_loc = PkgHasCustomLocation(pkg)
 
-    if pkg.lower() == "swscale" and os.path.isfile(GetThirdpartyDir() + "ffmpeg/include/libswscale/swscale.h"):
-        # Let it be handled by the ffmpeg package
-        LibName(target_pkg, "-lswscale")
-        return
-    if pkg.lower() == "swresample" and os.path.isfile(GetThirdpartyDir() + "ffmpeg/include/libswresample/swresample.h"):
-        LibName(target_pkg, "-lswresample")
-        return
+    # Determine the location of the thirdparty directory.
+    if not thirdparty_dir:
+        thirdparty_dir = pkg.lower()
+    pkg_dir = os.path.join(GetThirdpartyDir(), thirdparty_dir)
 
-    # First check if the package is in the thirdparty directory.
-    pkg_dir = os.path.join(GetThirdpartyDir(), pkg.lower())
+    # First check if the library can be found in the thirdparty directory.
     if not custom_loc and os.path.isdir(pkg_dir):
         if framework and os.path.isdir(os.path.join(pkg_dir, framework + ".framework")):
             FrameworkDirectory(target_pkg, pkg_dir)
diff --git a/panda/src/glstuff/glShaderContext_src.cxx b/panda/src/glstuff/glShaderContext_src.cxx
index fbf1e4e1a0..b5262ade6a 100644
--- a/panda/src/glstuff/glShaderContext_src.cxx
+++ b/panda/src/glstuff/glShaderContext_src.cxx
@@ -2684,7 +2684,6 @@ glsl_report_shader_errors(GLuint shader, Shader::ShaderType type, bool fatal) {
       GLCAT.warning(false)
         << "WARNING: " << fn << ":" << lineno << ": " << (line.c_str() + prefixlen) << "\n";
 
-
     } else if (sscanf(line.c_str(), "%d(%d) : %n", &fileno, &lineno, &prefixlen) == 2
                && prefixlen > 0) {