On Feb 21, 2013, at 3:06 AM, Jan Stary <[email protected]> wrote:

> Could someone who knows the pkg-config internals
> please enlighten me on this? Is it really the case
> that our pkg-config (as installed by devel/pkgconfig)
> does not have the PKG_PROG_PKG_CONFIG macro?

Looks defined to me. From /opt/local/share/aclocal/pkg.m4, which is provided by 
pkgconfig @0.27.1_2:

> # PKG_PROG_PKG_CONFIG([MIN-VERSION])
> # ----------------------------------
> AC_DEFUN([PKG_PROG_PKG_CONFIG],
> [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
> m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
> m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
> AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
> AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search 
> path])
> AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search 
> path])
> 
> if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
>       AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
> fi
> if test -n "$PKG_CONFIG"; then
>       _pkg_min_version=m4_default([$1], [0.9.0])
>       AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
>       if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
>               AC_MSG_RESULT([yes])
>       else
>               AC_MSG_RESULT([no])
>               PKG_CONFIG=""
>       fi
> fi[]dnl
> ])# PKG_PROG_PKG_CONFIG

vq
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