confREQUIRE_LIBSM

Define if libsm is required Build macro

Some of the programs in the source distribution, such as sendmail, require the libsm/libsm.a library. For those programs, this confREQUIRE_LIBSM build-time macro is already correctly defined.

Should you develop a program of your own that needs this library, you can modify its Makefile.m4 file to include it.

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