Being careful not to overwrite the results of testing for hstrerror in libresolv, also test whether inet_ntop/inet_pton are available from that library. Signed-off-by: Gary V. Vaughan <gary@xxxxxxxxxxxxxxxxxx> --- config.mak.in | 2 ++ configure.ac | 37 ++++++++++++++++++++++++++++++------- 2 files changed, 32 insertions(+), 7 deletions(-) Index: b/configure.ac =================================================================== --- a/configure.ac +++ b/configure.ac @@ -545,11 +545,33 @@ AC_SUBST(NEEDS_SOCKET) test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket" # -# Define NEEDS_RESOLV if linking with -lnsl and/or -lsocket is not enough. -# Notably on Solaris 7 inet_ntop and inet_pton additionally reside there. -AC_CHECK_LIB([c], [inet_ntop], -[NEEDS_RESOLV=], -[NEEDS_RESOLV=YesPlease]) +# The next few tests will define NEEDS_RESOLV if linking with +# libresolv provides some of the functions we would normally get +# from libc. +NEEDS_RESOLV= +AC_SUBST(NEEDS_RESOLV) +# +# Define NO_INET_NTOP if linking with -lresolv is not enough. +# Solaris 2.7 in particular hos inet_ntop in -lresolv. +NO_INET_NTOP= +AC_SUBST(NO_INET_NTOP) +AC_CHECK_FUNC([inet_ntop], + [], + [AC_CHECK_LIB([resolv], [inet_ntop], + [NEEDS_RESOLV=YesPlease], + [NO_INET_NTOP=YesPlease]) +]) +# +# Define NO_INET_PTON if linking with -lresolv is not enough. +# Solaris 2.7 in particular hos inet_pton in -lresolv. +NO_INET_PTON= +AC_SUBST(NO_INET_PTON) +AC_CHECK_FUNC([inet_pton], + [], + [AC_CHECK_LIB([resolv], [inet_pton], + [NEEDS_RESOLV=YesPlease], + [NO_INET_PTON=YesPlease]) +]) # # Define NO_HSTRERROR if linking with -lresolv is not enough. # Solaris 2.6 in particular has no hstrerror, even in -lresolv. @@ -561,8 +583,9 @@ AC_CHECK_FUNC([hstrerror], [NO_HSTRERROR=YesPlease]) ]) AC_SUBST(NO_HSTRERROR) - -AC_SUBST(NEEDS_RESOLV) +# +# If any of the above tests determined that -lresolv is needed at +# build-time, also set it here for remaining configure-time checks. test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv" AC_CHECK_LIB([c], [basename], Index: b/config.mak.in =================================================================== --- a/config.mak.in +++ b/config.mak.in @@ -53,6 +53,8 @@ NO_SETENV=@NO_SETENV@ NO_UNSETENV=@NO_UNSETENV@ NO_MKDTEMP=@NO_MKDTEMP@ NO_MKSTEMPS=@NO_MKSTEMPS@ +NO_INET_NTOP=@NO_INET_NTOP@ +NO_INET_PTON=@NO_INET_PTON@ NO_ICONV=@NO_ICONV@ OLD_ICONV=@OLD_ICONV@ NO_DEFLATE_BOUND=@NO_DEFLATE_BOUND@ -- Gary V. Vaughan (gary@xxxxxxxxxxxxxxxxxx) -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html