Remove --prefer-local-libs premake option

This option doesn't handle includes, further we rely on system includes
and pkg-config to locate dependencies.

For systems where installing into local is reasonable this paths should
already be in system/ld paths. So in practice this offers no value.

Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

build/premake/premake5.lua

@@ -18,9 +18,6 @@ newoption { trigger = "without-nvtt", description = "Disable use of NVTT" }
 newoption { trigger = "without-pch", description = "Disable generation and usage of precompiled headers" }
 newoption { trigger = "without-tests", description = "Disable generation of test projects" }
 
--- Linux/BSD specific options
-newoption { trigger = "prefer-local-libs", description = "Prefer locally built libs. Any local libraries used must also be listed within a file within /etc/ld.so.conf.d so the dynamic linker can find them at runtime." }
-
 -- OS X specific options
 newoption { trigger = "macosx-version-min", description = "Set minimum required version of the OS X API, the build will possibly fail if an older SDK is used, while newer API functions will be weakly linked (i.e. resolved at runtime)" }
 newoption { trigger = "sysroot", description = "Set compiler system root path, used for building against a non-system SDK. For example /usr/local becomes SYSROOT/user/local" }
@@ -379,10 +376,6 @@ function project_set_build_flags()
 		end
 
 		if os.istarget("linux") or os.istarget("bsd") then
-			if _OPTIONS["prefer-local-libs"] then
-				libdirs { "/usr/local/lib" }
-			end
-
 			-- To use our local shared libraries, they need to be found in the
 			-- runtime dynamic linker path. Add their path to -rpath.
 			if _OPTIONS["libdir"] then