--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -38,5 +38,5 @@ pureadmin_CFLAGS = -std=gnu99 -Wall
 
 pureadmin_LDFLAGS = -export-dynamic
 
-pureadmin_LDADD = @GTK_LIBS@ $(INTLLIBS) @BINRELOC_LIBS@
+pureadmin_LDADD = @GTK_LIBS@ $(INTLLIBS) @BINRELOC_LIBS@ -lm -lX11
 
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -249,7 +249,7 @@ pureadmin_SOURCES = \
 
 pureadmin_CFLAGS = -std=gnu99 -Wall 
 pureadmin_LDFLAGS = -export-dynamic
-pureadmin_LDADD = @GTK_LIBS@ $(INTLLIBS) @BINRELOC_LIBS@
+pureadmin_LDADD = @GTK_LIBS@ $(INTLLIBS) @BINRELOC_LIBS@ -lm -lX11
 all: all-am
 
 .SUFFIXES: