From 77a08e490c340ffeca089fb15043490f1ce4b7de Mon Sep 17 00:00:00 2001
From: Peter Powell <petpow@saberuk.com>
Date: Thu, 4 Jul 2013 09:27:12 +0100
Subject: Correctly detect the compiler version and whether it is acceptable.

---
 configure | 63 +++++++--------------------------------------------------------
 1 file changed, 7 insertions(+), 56 deletions(-)

(limited to 'configure')

diff --git a/configure b/configure
index 777c6c323..c8fbdce09 100755
--- a/configure
+++ b/configure
@@ -241,10 +241,12 @@ if ($config{CC} eq "") {
 	exit 1;	
 }
 
-our $exec = $config{CC} . " -dumpversion | cut -c 1";
-chomp($config{GCCVER}		= `$exec`);				# Major GCC Version
-$exec = $config{CC} . " -dumpversion | cut -c 3";
-chomp($config{GCCMINOR}		= `$exec`);
+our %cxx = get_compiler_info($config{CC});
+if ($cxx{UNSUPPORTED}) {
+	print "Your C++ compiler is too old to build InspIRCd!\n";
+	print "Reason: $cxx{REASON}\n";
+	exit 1;
+}
 
 if ($config{HAS_OPENSSL} =~ /^([-[:digit:].]+)(?:[a-z])?(?:\-[a-z][0-9])?/) {
 	$config{HAS_OPENSSL} = $1;
@@ -298,12 +300,6 @@ print ($cache_loaded ? "found\n" : "not found\n");
 $config{SYSTEM} = lc $^O;
 print "Checking operating system version... $config{SYSTEM}\n";
 
-$exec = $config{CC} . " -dumpversion | cut -c 1";
-chomp($config{GCCVER}		= `$exec`);				# Major GCC Version
-$exec = $config{CC} . " -dumpversion | cut -c 3";
-chomp($config{GCCMINOR}		= `$exec`);
-
-
 print "Checking whether <stdint.h> exists... ";
 if (test_header($config{CC}, "stdint.h")) {
 	$config{HAS_STDINT} = "true";
@@ -439,36 +435,7 @@ STOP
 	}
 	print ".\n\n";
 
-	$config{CHANGE_COMPILER} = "n";
-	print "I have detected the following compiler: \e[1;32m$config{CC}\e[0m (version \e[1;32m$config{GCCVER}.$config{GCCMINOR}\e[0m)\n";
-
-	while (($config{GCCVER} < 3) || ($config{GCCVER} eq "")) {
-		print "\e[1;32mIMPORTANT!\e[0m A GCC 2.x compiler has been detected, and
-should NOT be used. You should probably specify a newer compiler.\n\n";
-		yesno('CHANGE_COMPILER',"Do you want to change the compiler?");
-		if ($config{CHANGE_COMPILER} =~ /y/i) {
-			print "What command do you want to use to invoke your compiler?\n";
-			print "[\e[1;32m$config{CC}\e[0m] -> ";
-			chomp($config{CC} = <STDIN>);
-			if ($config{CC} eq "") {
-				$config{CC} = "g++";
-			}
-			chomp(my $foo = `$config{CC} -dumpversion | cut -c 1`);
-			if ($foo ne "") {
-				chomp($config{GCCVER}       = `$config{CC} -dumpversion | cut -c 1`); # we must redo these if we change compilers
-				chomp($config{GCCMINOR}     = `$config{CC} -dumpversion | cut -c 3`);
-				print "Queried compiler: \e[1;32m$config{CC}\e[0m (version \e[1;32m$config{GCCVER}.$config{GCCMINOR}\e[0m)\n";
-				if ($config{GCCVER} < 4 || $config{GCCVER} == 4 && $config{GCCMINOR} < 1) {
-					print "\e[1;32mGCC 4.1 and earlier WILL NOT WORK!\e[0m. Let's try that again, shall we?\n";
-				}
-			}
-			else {
-				print "\e[1;32mWARNING!\e[0m Could not execute the compiler you specified. You may want to try again.\n";
-			}
-		}
-	}
-
-	print "\n";
+	print "I have detected the following compiler: \e[1;32m$cxx{NAME}\e[0m (version \e[1;32m$cxx{VERSION}\e[0m)\n\n";
 
 	# Directory Settings..
 	my $tmpbase = $config{BASE_DIR};
@@ -688,19 +655,6 @@ if (($config{USE_GNUTLS} eq "y") || ($config{USE_OPENSSL} eq "y")) {
 	print "\e[1;32mhttp://wiki.inspircd.org/Installation_From_Tarball\e[0m\n";
 }
 print "*** \e[1;32mRemember to edit your configuration files!!!\e[0m ***\n\n\n";
-if (($config{OSNAME} eq "OpenBSD") && ($config{CC} ne "eg++")) {
-	print "\e[1;32mWARNING!\e[0m You are running OpenBSD but you are using the base gcc package\nrather than eg++. This compile will most likely fail, but i'm letting you\ngo ahead with it anyway, just in case i'm wrong :-)\n";
-}
-
-if ($config{GCCVER} < "3") {
-	print <<FOO2;
-\e[1;32mWARNING!\e[0m You are attempting to compile InspIRCd on GCC 2.x!
-GCC 2.x series compilers only had partial (read as broken) C++ support, and
-your compile will most likely fail horribly! If you have any problems, do NOT
-report them to the bugtracker or forums without first upgrading your compiler
-to a newer 3.x or 4.x (or whatever is available currently) version.
-FOO2
-}
 
 ################################################################################
 #			      HELPER FUNCTIONS				#
@@ -828,9 +782,6 @@ EOF
 		if ($config{OSNAME} =~ /MINGW32/i) {
 			print FILEHANDLE "#define IS_MINGW\n";
 		}
-		if ($config{GCCVER} >= 3) {
-			print FILEHANDLE "#define GCC3\n";
-		}
 		if ($config{HAS_STDINT} eq "true") {
 			print FILEHANDLE "#define HAS_STDINT\n";
 		}
-- 
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