diff -up fltk-1.3.4-1/fltk-config.in.fltk_config fltk-1.3.4-1/fltk-config.in

--- fltk-1.3.4-1/fltk-config.in.fltk_config	2016-01-30 20:49:56.000000000 -0600

+++ fltk-1.3.4-1/fltk-config.in	2017-03-04 12:29:28.910316677 -0600

@@ -44,8 +44,8 @@ CXX="@CXX@"

 # flags for C++ compiler:

 ARCHFLAGS="@ARCHFLAGS@"

-CFLAGS="@CFLAGS@ @LARGEFILE@ @PTHREAD_FLAGS@"

-CXXFLAGS="@CXXFLAGS@ @LARGEFILE@ @PTHREAD_FLAGS@"

+CFLAGS=""

+CXXFLAGS=""

 LDFLAGS="@LDFLAGS@"

 LDLIBS="@LIBS@"

 OPTIM="@OPTIM@"

@@ -228,7 +228,7 @@ if test "$BINARY_DIR" != ""; then

     includes="-I$BINARY_DIR $includes"

 fi

-if test "$libdir" != /usr/lib -a "$libdir" != /usr/lib32; then

+if test "$libdir" != /usr/lib -a "$libdir" != /usr/lib32 -a "$libdir" != /usr/lib64; then

     libs=-L$libdir

 else

     libs=

@@ -236,28 +236,28 @@ fi

 # Calculate needed libraries

 LDSTATIC="$libdir/libfltk.a $LDLIBS"

-LDLIBS="-lfltk$SHAREDSUFFIX $LDLIBS"

+LDLIBS="-lfltk$SHAREDSUFFIX"

 if test x$use_forms = xyes; then

     LDLIBS="-lfltk_forms$SHAREDSUFFIX $LDLIBS"

     LDSTATIC="$libdir/libfltk_forms.a $LDSTATIC"

 fi

 if test x$use_gl = xyes; then

-    LDLIBS="-lfltk_gl$SHAREDSUFFIX @GLLIB@ $LDLIBS"

+    LDLIBS="-lfltk_gl$SHAREDSUFFIX $LDLIBS"

     LDSTATIC="$libdir/libfltk_gl.a @GLLIB@ $LDSTATIC"

 fi

 if test x$use_images = xyes; then

-    LDLIBS="-lfltk_images$SHAREDSUFFIX $IMAGELIBS $LDLIBS"

+    LDLIBS="-lfltk_images$SHAREDSUFFIX $LDLIBS"

     LDSTATIC="$libdir/libfltk_images.a $STATICIMAGELIBS $LDSTATIC"

 fi

 if test x$use_cairo = xyes; then

-    LDLIBS="-lfltk_cairo$SHAREDSUFFIX $CAIROLIBS $LDLIBS"

+    LDLIBS="-lfltk_cairo$SHAREDSUFFIX $LDLIBS"

     LDSTATIC="$libdir/libfltk_cairo.a $CAIROLIBS $LDSTATIC"

 fi

-LDLIBS="$DSOLINK $LDFLAGS $libs $LDLIBS"

-LDSTATIC="$LDFLAGS $LDSTATIC"

+LDLIBS="$libs $LDLIBS"

+#LDSTATIC="$LDFLAGS $LDSTATIC"

 # Answer to user requests

 if test -n "$echo_help"; then