* add option to respect AR
 (respecting PKG_CONFIG is handled in the ebuild)
* handle recastnavigation unbundling
* remove unnecessary opusfile
* remove unnecessary -no-pie
* remove -pipe from LDFLAGS, may "possibly" be relevant to:
  https://bugs.gentoo.org/861689
  https://github.com/godotengine/godot/commit/f035e784
--- a/SConstruct
+++ b/SConstruct
@@ -192,4 +192,5 @@
 opts.Add("CXX", "C++ compiler")
 opts.Add("CC", "C compiler")
+opts.Add("AR", "Archiver")
 opts.Add("LINK", "Linker")
 opts.Add("CCFLAGS", "Custom flags for both the C and C++ compilers")
--- a/platform/server/detect.py
+++ b/platform/server/detect.py
@@ -135,5 +135,4 @@
 
     env.Append(CCFLAGS=["-pipe"])
-    env.Append(LINKFLAGS=["-pipe"])
 
     ## Dependencies
@@ -178,4 +177,7 @@
         env.ParseConfig("pkg-config libenet --cflags --libs")
 
+    if not env["builtin_recast"]:
+        env.ParseConfig("pkg-config recastnavigation --cflags --libs")
+
     if not env["builtin_squish"]:
         env.ParseConfig("pkg-config libsquish --cflags --libs")
@@ -205,5 +207,5 @@
     if not env["builtin_opus"]:
         env["builtin_libogg"] = False  # Needed to link against system opus
-        env.ParseConfig("pkg-config opus opusfile --cflags --libs")
+        env.ParseConfig("pkg-config opus --cflags --libs")
 
     if not env["builtin_libogg"]:
--- a/platform/x11/detect.py
+++ b/platform/x11/detect.py
@@ -232,17 +232,5 @@
 
     env.Append(CCFLAGS=["-pipe"])
-    env.Append(LINKFLAGS=["-pipe"])
 
-    # Check for gcc version >= 6 before adding -no-pie
-    version = get_compiler_version(env) or [-1, -1]
-    if using_gcc(env):
-        if version[0] >= 6:
-            env.Append(CCFLAGS=["-fpie"])
-            env.Append(LINKFLAGS=["-no-pie"])
-    # Do the same for clang should be fine with Clang 4 and higher
-    if using_clang(env):
-        if version[0] >= 4:
-            env.Append(CCFLAGS=["-fpie"])
-            env.Append(LINKFLAGS=["-no-pie"])
 
     ## Dependencies
@@ -298,4 +286,7 @@
         env.ParseConfig("pkg-config libenet --cflags --libs")
 
+    if not env["builtin_recast"]:
+        env.ParseConfig("pkg-config recastnavigation --cflags --libs")
+
     if not env["builtin_squish"]:
         env.ParseConfig("pkg-config libsquish --cflags --libs")
@@ -325,5 +316,5 @@
     if not env["builtin_opus"]:
         env["builtin_libogg"] = False  # Needed to link against system opus
-        env.ParseConfig("pkg-config opus opusfile --cflags --libs")
+        env.ParseConfig("pkg-config opus --cflags --libs")
 
     if not env["builtin_libogg"]: