problems building the packages in centos 7

[shadowleaves]

first of all, there is no "configure" script in the package directory; and I use autogen.sh to create it. note that I had to rename configure.in to configure.ac and add a line of "AC_PROG_F77" in order to make it work.

then when I run make, I got the following errors:

make[1]: Entering directory `/home/hyan/tmp/spanlib/src'
make[1]: *** No rule to make target `lbfgs.f', needed by `lbfgs.o'.  Stop.
make[1]: Leaving directory `/home/hyan/tmp/spanlib/src'
make: *** [all-recursive] Error 1

any idea how to make it work? thanks