From b6765d719358b3241d51c995fafe049f18b1ada0 Mon Sep 17 00:00:00 2001
From: rmanfredi <rmanfredi@2592e710-e01b-42a5-8df0-11608a6cc53d>
Date: Wed, 4 Apr 2012 06:58:03 +0000
Subject: Improved library detection by using the compiler to perform a link
 check.

git-svn-id: svn://svn.code.sf.net/p/dist/code/trunk/dist@146 2592e710-e01b-42a5-8df0-11608a6cc53d
---
 mcon/U/libs.U | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/mcon/U/libs.U b/mcon/U/libs.U
index 4e1d879..f92fd0b 100644
--- a/mcon/U/libs.U
+++ b/mcon/U/libs.U
@@ -210,7 +210,21 @@ for thislib in $libswanted; do
 	    fi	
 	done
 	if $test ! -f "$xxx"; then
-	    echo "No -l$thislib."
+?X:
+?X: Try linking aginst the library: gcc on linux platforms is notorious for
+?X: using complex library search logic, especially on systems mixing 32-bit
+?X: and 64-bit versions.
+?X:
+		if $cc -o lt $ccflags $ldflags lt.c -l$thislib >/dev/null 2>&1
+		then
+			echo "Found -l$thislib (via $cc)."
+			case " $dflt " in
+			*"-l$thislib "*) ;;
+			*) dflt="$dflt -l$thislib";;
+			esac
+		else
+			echo "No -l$thislib."
+		fi
 	fi
 done
 set X $dflt
-- 
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