Premake: Add include guard to make sure dependencies do not include themselves in an infinite chain when two components depend on each other

thirdparty/libtomcrypt.lua

@@ -1,17 +1,21 @@
 libtomcrypt = {}
 
 function libtomcrypt:include()
-	defines{
-		"LTM_DESC"
-	}
+	if References:include("libtomcrypt") then
+		defines{
+			"LTM_DESC"
+		}
 
-	includedirs {
-		path.join(ThirdPartyFolder(), "libtomcrypt/src/headers")
-	}
+		includedirs {
+			path.join(ThirdPartyFolder(), "libtomcrypt/src/headers")
+		}
+	end
 end
 
 function libtomcrypt:link()
-	links "libtomcrypt"
+	if References:link("libtomcrypt") then
+		links "libtomcrypt"
+	end
 end
 
 function libtomcrypt:use()
@@ -19,6 +23,7 @@ function libtomcrypt:use()
 end
 
 function libtomcrypt:project()
+	References:reset()
 	local folder = ThirdPartyFolder();
 
 	project "libtomcrypt"

thirdparty/libtommath.lua

@@ -1,13 +1,17 @@
 libtommath = {}
 
 function libtommath:include()
-	includedirs {
-		path.join(ThirdPartyFolder(), "libtommath")
-	}
+	if References:include("libtommath") then
+		includedirs {
+			path.join(ThirdPartyFolder(), "libtommath")
+		}
+	end
 end
 
 function libtommath:link()
-	links "libtommath"
+	if References:link("libtommath") then
+		links "libtommath"
+	end
 end
 
 function libtommath:use()
@@ -15,6 +19,7 @@ function libtommath:use()
 end
 
 function libtommath:project()
+	References:reset()
 	local folder = ThirdPartyFolder();
 
 	project "libtommath"

thirdparty/minilzo.lua

@@ -1,13 +1,17 @@
 minilzo = {}
 
 function minilzo:include()
-	includedirs {
-		path.join(ThirdPartyFolder(), "minilzo")
-	}
+	if References:include("minilzo") then
+		includedirs {
+			path.join(ThirdPartyFolder(), "minilzo")
+		}
+	end
 end
 
 function minilzo:link()
-	links "minilzo"
+	if References:link("minilzo") then
+		links "minilzo"
+	end
 end
 
 function minilzo:use()
@@ -15,6 +19,7 @@ function minilzo:use()
 end
 
 function minilzo:project()
+	References:reset()
 	local folder = ThirdPartyFolder();
 
 	project "minilzo"

thirdparty/minizip.lua

@@ -1,15 +1,19 @@
 minizip = {}
 
 function minizip:include()
-    zlib:include()
-	includedirs {
-		path.join(ThirdPartyFolder(), "zlib/contrib/minizip")
-	}
+	if References:include("minizip") then
+		zlib:include()
+		includedirs {
+			path.join(ThirdPartyFolder(), "zlib/contrib/minizip")
+		}
+	end
 end
 
 function minizip:link()
-    zlib:link()
-	links "minizip"
+	if References:link("minizip") then
+		zlib:link()
+		links "minizip"
+	end
 end
 
 function minizip:use()
@@ -17,6 +21,7 @@ function minizip:use()
 end
 
 function minizip:project()
+	References:reset()
 	local folder = ThirdPartyFolder();
 
 	project "minizip"

thirdparty/salsa20.lua

@@ -1,13 +1,17 @@
 salsa20 = {}
 
 function salsa20:include()
-	includedirs {
-		path.join(ThirdPartyFolder(), "salsa20")
-	}
+	if References:include("salsa20") then
+		includedirs {
+			path.join(ThirdPartyFolder(), "salsa20")
+		}
+	end
 end
 
 function salsa20:link()
-	links "salsa20"
+	if References:link("salsa20") then
+		links "salsa20"
+	end
 end
 
 function salsa20:use()
@@ -15,6 +19,7 @@ function salsa20:use()
 end
 
 function salsa20:project()
+	References:reset()
 	local folder = ThirdPartyFolder();
 
 	project "salsa20"

thirdparty/zlib.lua

@@ -1,18 +1,21 @@
 zlib = {}
 
 function zlib:include()
+	if References:include("zlib") then
+		defines {
+			"ZLIB_CONST"
+		}
 
-	defines {
-		"ZLIB_CONST"
-	}
-
-	includedirs {
-		path.join(ThirdPartyFolder(), "zlib")
-	}
+		includedirs {
+			path.join(ThirdPartyFolder(), "zlib")
+		}
+	end
 end
 
 function zlib:link()
-	links "zlib"
+	if References:link("zlib") then
+		links "zlib"
+	end
 end
 
 function zlib:use()
@@ -20,6 +23,7 @@ function zlib:use()
 end
 
 function zlib:project()
+	References:reset()
 	local folder = ThirdPartyFolder();
 
 	project "zlib"