设置自动工具库文件名，以后再引用

Question

I'm using autotools to build a library which will later be loaded by another program. This library has to have a .so extension to it regardless of the platform I'm on (this is a requirement imposed by the program loading it), and I'd also like it to not have a version specifier. How can I set the output name of such a library?

This is what Makefile.am looks like

lib_LTLIBRARIES = mylib.la
mylib_la_SOURCES = mylib.c
mylib_la_CPPFLAGS = $(LTDLINCL)
mylib_la_CFLAGS = $(CFLAGS) $(LIBFFI_CFLAGS)
LDADD = $(LIBLTDL) -dlopen self

Reading through the libtool manpage, it seems I need to set -install_name , but I don't see it referenced in the generated Makefile anywhere.

I also need to be able to reference this library's output directory elsewhere in the Makefiles (for testing purposes), is there a variable containing its basename or full path?

Answer 1

How can I set the output name of such a library?

The output name of the library will be the name given in lib_LTLIBRARIES without the suffix .a . It will generate by default a shared library - .so . Thus, you do not need to specify anything else.

I also need to be able to reference this library's output directory elsewhere in the Makefiles (for testing purposes), is there a variable containing its basename or full path?

The variable $(libdir) or @libdir@ in the Makefile will point to the full path of the library directory.