Hello,
when I do ./configure --with-curses the TERMCAP_LIB Makefile variable is
filled with -lcurses, and when I do ./configure --without-curses,
TERMCAP_LIB is -ltermcap .
In terms of support/shobj-conf, my system is "linux-gnu-gcc-unknown", so
the case "linux*-*|gnu*-*|k*bsd*-gnu-*|freebsd*-gentoo" on line 127 is
called.
My SHLIB_LIBS is empty, because only on cygwin* and mingw* TERMCAP_LIB
is added to SHLIB_LIBS .
In shlib/Makefile lines 175-182 the same linker parameters are used to
link with libhistory and libreadline . To my understanding, libhistory
does not need TERMCAP_LIB, as the latter does not contain symbols
libhistory needs, but despite of this, on mingw and cygwin,
shlib/libhistory is linked with $TERM_CAP.
On the other side, under Linux, shlib/libreadline is liked with:
$(CC) -shared -Wl,-soname,libreadline.so.6.3 -L/usr/lib -L/lib
-Wl,-rpath,/usr/lib -Wl,-soname,libreadline.so.6 -o libreadline.so.6.3
readline.so vi_mode.so funmap.so keymaps.so parens.so search.so rltty.so
complete.so bind.so isearch.so display.so signals.so util.so kill.so
undo.so macro.so input.so callback.so terminal.so text.so nls.so misc.so
history.so histexpand.so histfile.so histsearch.so shell.so mbutil.so
tilde.so colors.so parse-colors.so xmalloc.so xfree.so compat.so
-> without passing TERMCAP_LIB, which leads to undefined symbols:
nm shlib/libreadline.so.6.3 | grep " U " | grep -v GLIBC
U BC
U PC
U tgetent
U tgetflag
U tgetnum
U tgetstr
U tgoto
U tputs
U UP
(I intentionally don't use "nm -D" as this would delete the @GLIB marker
and hence I cannot filter).
Is there any reason, why TERMCAP_LIB is passed to the static linker (in
/Makefile, line 184), but not to the shared linker?
Please add to support/shobj-conf:
--- support/shobj-conf 2014-04-11 19:58:26.385241268 +0000
+++ support/shobj-conf.orig 2014-04-11 19:57:31.815241203 +0000
@@ -130,7 +130,6 @@
SHLIB_XLDFLAGS='-Wl,-rpath,$(libdir) -Wl,-soname,`basename $@
$(SHLIB_MINOR)`'
SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
- SHLIB_LIBS='$(TERMCAP_LIB)'
;;
freebsd2*)
Another approach is to have different shared linking parameters for
libreadline and libhistory (with and without TERMCAP_LIB / -lcurses), by
adding TERMCAP_LIB to the end of shlib/Makefile(.in) line 177. But
choosing this approach I see no reason to continue adding TERMCAP_LIB to
SHLIB_LIBS on MinGW and Cygwin.
Kind regards
Дилян
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