[PATCH] Allow to build without exporting symbols

[Jason Evans]

On Nov 7, 2012, at 10:40 PM, Mike Hommey wrote:
> From: Mike Hommey <mh at glandium.org>
> 
> When statically linking jemalloc, it may be beneficial not to export its
> symbols if it makes sense, which allows the compiler and the linker to do
> some further optimizations.
> ---
> configure.ac |    7 +++++++
> 1 file changed, 7 insertions(+)
> 
> diff --git a/configure.ac b/configure.ac
> index 1c52439..8558961 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -471,6 +471,13 @@ for stem in ${public_syms}; do
>   AC_DEFINE_UNQUOTED([${n}], [${m}])
> done
> 
> +AC_ARG_WITH([export],
> +  [AS_HELP_STRING([--without-export], [disable exporting jemalloc public APIs])],
> +  [if test "x$with_export" = "xno"; then
> +  AC_DEFINE([JEMALLOC_EXPORT],[])]
> +fi]
> +)
> +
> dnl Do not mangle library-private APIs by default.
> AC_ARG_WITH([private_namespace],
>   [AS_HELP_STRING([--with-private-namespace=<prefix>], [Prefix to prepend to all library-private APIs])],
> -- 
> 1.7.10.4

This looks to me like it will cause redefined symbol warnings.  Does it?  Also, --without-export needs to be documented in INSTALL.

Thanks,
Jason