On 07 Apr 2016 16:00, Marcus Hoffmann wrote: > Dear all, > in experimenting a bit with configure options I found the > --without-capng option (as reported by configure --help) giving the > following warning (and having no effect): > > configure: WARNING: unrecognized options: --without-capng > > Looking into configure.ac I found the option should probably be named > --without-cap_ng (AC_ARG_WITH([cap_ng],...). yes, the help string is wrong. it should be: --- a/configure.ac +++ b/configure.ac @@ -1182,7 +1182,7 @@ AC_CHECK_FUNCS([setns]) AC_ARG_WITH([cap_ng], - AS_HELP_STRING([--without-capng], [compile without libcap-ng]), + AS_HELP_STRING([--without-cap-ng], [compile without libcap-ng]), [], [with_cap_ng=auto] ) AS_IF([test "x$with_cap_ng" = xno], [have_cap_ng=no],[ > But using this the configure script dies with the following message: > > > configure: error: conditional "HAVE_CAP_NG" was never defined. > > Usually this means the macro was only invoked conditionally. > > --without-cap-ng produces the same result. > > I tried fiddling around with the autoconf macros but got no further than > that. the helper macros can sometimes obscure things --- a/configure.ac +++ b/configure.ac @@ -1189,7 +1189,10 @@ AC_ARG_WITH([cap_ng], AS_HELP_STRING([--without-capng], [compile without libcap-ng]), [], [with_cap_ng=auto] ) -AS_IF([test "x$with_cap_ng" = xno], [have_cap_ng=no],[ +AS_IF([test "x$with_cap_ng" = xno], [ + AM_CONDITIONAL([HAVE_CAP_NG], [false]) + have_cap_ng=no +],[ UL_CHECK_LIB([cap-ng], [capng_apply], [cap_ng]) ]) -mike
From 110c2c94c59742e9879f2f39e6aec79925dc1592 Mon Sep 17 00:00:00 2001 From: Mike Frysinger <vapier@xxxxxxxxxx> Date: Thu, 7 Apr 2016 12:17:43 -0400 Subject: [PATCH] build-sys: fix cap-ng configure flag handling Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx> --- configure.ac | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/configure.ac b/configure.ac index e42a2c4..9e0e28b 100644 --- a/configure.ac +++ b/configure.ac @@ -1186,10 +1186,13 @@ AC_CHECK_FUNCS([setns]) AC_ARG_WITH([cap_ng], - AS_HELP_STRING([--without-capng], [compile without libcap-ng]), + AS_HELP_STRING([--without-cap-ng], [compile without libcap-ng]), [], [with_cap_ng=auto] ) -AS_IF([test "x$with_cap_ng" = xno], [have_cap_ng=no],[ +AS_IF([test "x$with_cap_ng" = xno], [ + AM_CONDITIONAL([HAVE_CAP_NG], [false]) + have_cap_ng=no +],[ UL_CHECK_LIB([cap-ng], [capng_apply], [cap_ng]) ]) -- 2.7.4
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