Add check for libm to configure

Check for libm and add the library to the linker flags.

diff --git a/configure.ac b/configure.ac
index db3067418eed808b76490da3cedef842c5d79772..99550b6221affe379458fd7c3952b144046d6e66 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -31,6 +31,7 @@ AC_CHECK_FUNCS([mkdir strcasecmp strdup strtol])
 
 # Checks for libraries.
 AC_SEARCH_LIBS([iconv_open], [iconv], AC_DEFINE(CONFIG_ICONV, 1, [use iconv]))
+AC_CHECK_LIB([m], [fabs])
 
 # Check for libraries via pkg-config
 PKG_CHECK_MODULES([FONTCONFIG], fontconfig >= 2.2.0, [