diff -ur cfitsio/configure cfitsio-fixed/configure
--- cfitsio/configure	2012-04-13 21:16:16.000000000 +0200
+++ cfitsio-fixed/configure	2012-04-24 13:54:49.295113574 +0200
@@ -3908,7 +3908,8 @@
     SHLIB_SUFFIX=".sl"
     ;;
   lnx)
-    SHLIB_LD=":"
+    SHLIB_LD="cc -shared -Wl,-soname,libcfitsio.so.0"
+    SHLIB_SUFFIX=".so.0"
     ;;
   osf)
     SHLIB_LD="ld -shared -expect_unresolved '*'"
@@ -3929,7 +3930,7 @@
 # Darwin uses gcc (=cc), but needs different flags (see above)
 # if test "x$GCC" = xyes; then
 if test "x$GCC" = xyes && test "x$EXT" != xdarwin && test "x$EXT" != xcygwin; then
-  SHLIB_LD="$CC -shared"
+  SHLIB_LD="cc -shared -Wl,-soname,libcfitsio.so.0"
   lhea_shlib_cflags='-fPIC'
 fi
 if test "x$lhea_shlib_cflags" != x; then
diff -ur cfitsio/Makefile.in cfitsio-fixed/Makefile.in
--- cfitsio/Makefile.in	2012-04-13 21:16:08.000000000 +0200
+++ cfitsio-fixed/Makefile.in	2012-04-24 13:55:38.543470352 +0200
@@ -87,7 +87,7 @@
 shared: libcfitsio${SHLIB_SUFFIX}
 
 libcfitsio${SHLIB_SUFFIX}: ${OBJECTS}
-		${SHLIB_LD} ${LDFLAGS} -o $@ ${OBJECTS}
+		${SHLIB_LD} ${LDFLAGS} -o $@ ${OBJECTS} -lpthread -lm
 
 install:	libcfitsio.a $(INSTALL_DIRS)
 		@if [ -f libcfitsio.a ]; then \