From af70c6767612942ded955e6e4e2edb709930050d Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Mon, 22 Oct 2007 20:10:46 +0000
Subject: Conditionals in the buildsystem language allowing for checking of
 configure flags: /* $If: USE_KQUEUE */ /* $ExtraSources:
 socketengine_kqueue.cpp */ /* $ExtraObjects: socketengine_kqueue.o */ /*
 $EndIf */ This is used exactly where the example dictates: to pick a socket
 engine from the socketengine.cpp.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@8308 e03df62e-2008-0410-955e-edbf42e46eb7
---
 configure            | 54 +++++++++++++++++++++++++++++++++-------------------
 src/socketengine.cpp | 19 ++++++++++++++++++
 2 files changed, 53 insertions(+), 20 deletions(-)

diff --git a/configure b/configure
index 353142727..68dd50293 100755
--- a/configure
+++ b/configure
@@ -43,7 +43,6 @@ my @immutabledeps = (
 	"inspircd.h",
 );
 
-
 ###############################################################################################
 #
 #                                 NON-EDITABLE VARIABLES
@@ -57,21 +56,25 @@ my @immutabledeps = (
 my %filelist = ();
 
 # If you wish for a file to have special dependencies in the makefile, add an entry here.
+# Auto populated by /* $ExtraDeps: */ instruction
 
 my %specialdeps = ();
 
 # If you wish for a file to have extra make lines (in between the compile and link steps)
 # then insert them here.
+# Auto populated by /* $ExtraBuild: */ instruction
         
 my %extrabuildlines = ();
 
 # If you wish for a file to be linked against extra objects or arctives, insert them here.
+# Auto populated by /* $ExtraObjects: */ instruction
 
 my %extraobjects = ();
 
 # If you wish to compile extra cpp sources into an object, define them here.
 # NOTE: Certain cpp files such as the socket engines have a value auto calculated
 # for this table so that their derived class is built.
+# Auto populated by /* $ExtraSources: */ instruction
 
 my %extrasources = ();
 
@@ -1434,6 +1437,19 @@ sub write_dynamic_makefile
 	}
 	closedir(DIRHANDLE);
 
+	if (!$has_epoll)
+	{
+		$config{USE_EPOLL} = 0;
+	}
+	if (!$has_kqueue)
+	{
+		$config{USE_KQUEUE} = 0;
+	}
+	if (!$has_ports)
+	{
+		$config{USE_PORTS} = 0;
+	}
+
 	print "Scanning src folder for core files";
 	opendir(DIRHANDLE, "src");
 	foreach $name (sort readdir(DIRHANDLE))
@@ -1443,27 +1459,39 @@ sub write_dynamic_makefile
 			open (CPP, "<src/$name") or die("Can't open src/$name to scan it! oh bugger");
 			while (chomp($line = <CPP>))
 			{
-				if ($line =~ /\/\* \$Core: (\w+) \*\//)
+				if ($line =~ /\/\* \$Core: (\w+) \*\//i)
 				{
 					$filelist{$name} = $1;
 					print ".";
 				}
-				elsif ($line =~ /\/\* \$ExtraDeps: (.*?) \*\//)
+				elsif ($line =~ /\/\* \$ExtraDeps: (.*?) \*\//i)
 				{
 					$specialdeps{$name} = $1;
 				}
-				elsif ($line =~ /\/\* \$ExtraObjects: (.*?) \*\//)
+				elsif ($line =~ /\/\* \$ExtraObjects: (.*?) \*\//i)
 				{
 					$extraobjects{$name} = $1;
 				}
-				elsif ($line =~ /\/\* \$ExtraBuild: (.*?) \*\//)
+				elsif ($line =~ /\/\* \$ExtraBuild: (.*?) \*\//i)
 				{
 					$extrabuildlines{$name} = $1;
 				}
-				elsif ($line =~ /\/\* \$ExtraSources: (.*?) \*\//)
+				elsif ($line =~ /\/\* \$ExtraSources: (.*?) \*\//i)
 				{
 					$extrasources{$name} = $1;
 				}
+				elsif ($line =~ /\/\* \$If: (\w+) \*\//i)
+				{
+					if (($config{$1} ne "y") and ($config{$1} ne "yes") and ($config{$1} ne "1"))
+					{
+						# Skip to 'endif'
+						while (chomp($line = <CPP>))
+						{
+							die ("\$If buildsystem instruction within another \$If in file src/$name") if ($line =~ /\/\* \$If: (\w+) \*\//i);
+							last if ($line =~ /\/\* \$EndIf \*\//i);
+						}
+					}
+				}
 			}
 			close CPP;
 		}
@@ -1471,20 +1499,6 @@ sub write_dynamic_makefile
 	closedir(DIRHANDLE);
 	print " done!\n";
 
-	$se = "socketengine_select";
-	if (($has_kqueue) && ($config{USE_KQUEUE} eq "y")) {
-		$se = "socketengine_kqueue";
-	}
-	elsif (($has_epoll) && ($config{USE_EPOLL} eq "y")) {
-		$se = "socketengine_epoll";
-	}
-	elsif (($has_ports) && ($config{USE_PORTS} eq "y")) {
-		$se = "socketengine_ports";
-	}
-
-	$extrasources{"socketengine.cpp"} = $se . ".cpp";
-	$extraobjects{"socketengine.cpp"} = $se . ".o";
-
 	$freebsd4libs = $config{CRAQ};
 
 	my $all = "all: ";
diff --git a/src/socketengine.cpp b/src/socketengine.cpp
index 06e490c42..f17d2f1c5 100644
--- a/src/socketengine.cpp
+++ b/src/socketengine.cpp
@@ -13,6 +13,25 @@
 
 /* $Core: libIRCDsocketengine */
 
+/*********        DEFAULTS       **********/
+/* $ExtraSources: socketengine_select.cpp */
+/* $ExtraObjects: socketengine_select.o */
+
+/* $If: USE_KQUEUE */
+/* $ExtraSources: socketengine_kqueue.cpp */
+/* $ExtraObjects: socketengine_kqueue.o */
+/* $EndIf */
+
+/* $If: USE_EPOLL */
+/* $ExtraSources: socketengine_epoll.cpp */
+/* $ExtraObjects: socketengine_epoll.o */
+/* $EndIf */
+
+/* $If: USE_PORTS */
+/* $ExtraSources: socketengine_ports.cpp */
+/* $ExtraObjects: socketengine_ports.o */
+/* $EndIf */
+
 #include "inspircd.h"
 #include "socketengine.h"
 
-- 
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