From: Sam James <sam@gentoo.org>
Date: Thu, 13 Jan 2022 06:00:11 +0000
Subject: [PATCH] Fix underlinking against libm

Bug: https://bugs.gentoo.org/740162
--- a/configure.ac
+++ b/configure.ac
@@ -47,6 +47,8 @@ GTK_DOC_CHECK(1.0)
 # misc checks
 PKG_CHECK_MODULES(MISC, libgnomecanvas-2.0 x11)
 
+AC_SEARCH_LIBS(exp, m)
+
 # set compilation flags
 CFLAGS="$CFLAGS $GTK_CFLAGS $MISC_CFLAGS -Wall"
 LIBS="$LIBS $GTK_LIBS $MISC_LIBS"