[lxc-devel] [PATCH 01/24] configure.ac: Add code to detect bionic C library

[Serge Hallyn]

Quoting Stéphane Graber (stgraber at ubuntu.com):
> This adds a new IS_BIONIC define that can be used to detect whether we are
> building with eglibc or with bionic.
> 
> Signed-off-by: Stéphane Graber <stgraber at ubuntu.com>

Acked-by: Serge E. Hallyn <serge.hallyn at ubuntu.com>

> ---
>  configure.ac | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/configure.ac b/configure.ac
> index 2add6a3..9694d30 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -192,6 +192,22 @@ else
>  fi
>  AC_SUBST([CAP_LIBS])
>  
> +# Check for alternate C libraries
> +AC_MSG_CHECKING(for bionic libc)
> +AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
> +    [[#ifndef __ANDROID__
> +error: Not bionic!
> +#endif]])],
> +                   [is_bionic=yes],
> +                   [is_bionic=no])
> +if test "x$is_bionic" = "xyes"; then
> +        AC_DEFINE([IS_BIONIC], 1, ["bionic libc"])
> +        AC_MSG_RESULT([yes])
> +else
> +        AC_MSG_RESULT([no])
> +fi
> +AM_CONDITIONAL([IS_BIONIC], [test "x$is_bionic" = "xyes"])
> +
>  # Some systems lack PR_CAPBSET_DROP definition => HAVE_DECL_PR_CAPBSET_DROP
>  AC_CHECK_DECLS([PR_CAPBSET_DROP], [], [], [#include <sys/prctl.h>])
>  
> -- 
> 1.8.0
> 
> 
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