try to fix building/linking under Linux

pdflib/pdflib.spec

@@ -38,7 +38,7 @@ Class:        BASE
 Group:        Graphics
 License:      PDFlib
 Version:      %{V_long}
-Release:      20041222
+Release:      20050216
 
 #   list of sources
 Source0:      http://www.pdflib.com/products/pdflib/download/%{V_comp}src/PDFlib-Lite-%{V_long}.tar.gz
@@ -76,11 +76,11 @@ AutoReqProv:  no
     CFLAGS="%{l_cflags -O}" \
     INSTALL="%{l_shtool} install -c" \
     PNGLIBINC="%{l_cppflags libpng .}" \
-    PNGLIBLINK="-lpng" \
+    PNGLIBLINK="%{l_ldflags} -lpng" \
     JPEGLIBINC="%{l_cppflags}" \
-    JPEGLIBLINK="-ljpeg" \
+    JPEGLIBLINK="%{l_ldflags} -ljpeg" \
     FLATELIBINC="%{l_cppflags}" \
-    FLATELIBLINK="-lz" \
+    FLATELIBLINK="%{l_ldflags} -lz" \
     ./configure \
         --prefix=%{l_prefix} \
         --disable-shared