|  25.4.2 A Makefile.am for DLLs 
First of all we will autoconfiscate(66) the source files above with a minimal setup:
 
`Makefile.am' is used to generate the `Makefile.in' template
for the `configure' script:
 |  | 
 ## Process this file with automake to produce Makefile.in.
lib_LTLIBRARIES		= libhello.la
libhello_la_SOURCES     = hello.c
libhello_la_LDFLAGS     = -no-undefined -version-info 0:0:0
include_HEADERS         = hello.h
bin_PROGRAMS            = hello
hello_SOURCES           = main.c
hello_LDADD             = libhello.la
 | 
 
The new feature introduced in this file is the use of the
`-no-undefined' flag in the libhello_la_LDFLAGSvalue.
This flag is required for Windows DLL builds.  It asserts to the linker
that there are no undefined symbols in the `libhello.la' target,
which is one of the requirements for building a DLL outlined
earlier.  See section 11.2.1 Creating Libtool Libraries with Automake. 
For an explanation of the contents of the rest of this `Makefile.am',
See section Introducing GNU automake.
 
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