Use Gnulib's `count-one-bits' module.

* m4/gnulib-cache.m4 (gl_MODULES): Add `count-one-bits'.

m4/.cvsignore

@@ -18,3 +18,5 @@ time_h.m4
 time_r.m4
 tm_gmtoff.m4
 wchar.m4
+count-one-bits.m4
+inline.m4

m4/count-one-bits.m4

@@ -0,0 +1,12 @@
+# count-one-bits.m4 serial 1
+dnl Copyright (C) 2007 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_COUNT_ONE_BITS],
+[
+  dnl We don't need (and can't compile) count_one_bits_ll
+  dnl unless the type 'unsigned long long int' exists.
+  AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
+])

m4/gnulib-cache.m4

@@ -15,12 +15,13 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --aux-dir=build-aux --lgpl --libtool --macro-prefix=gl alloca extensions strcase strftime
+#   gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --aux-dir=build-aux --lgpl --libtool --macro-prefix=gl alloca count-one-bits extensions strcase strftime
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
 gl_MODULES([
   alloca
+  count-one-bits
   extensions
   strcase
   strftime

m4/gnulib-comp.m4

@@ -46,6 +46,8 @@ LTALLOCA=`echo "$ALLOCA" | sed 's/\.[^.]* /.lo /g;s/\.[^.]*$/.lo/'`
 changequote([, ])dnl
 AC_SUBST([LTALLOCA])
   gl_FUNC_ALLOCA
+  gl_COUNT_ONE_BITS
+  gl_INLINE
   AM_STDBOOL_H
   gl_STRCASE
   gl_FUNC_GNU_STRFTIME
@@ -184,6 +186,7 @@ AC_DEFUN([gl_FILE_LIST], [
   build-aux/link-warning.h
   lib/alloca.c
   lib/alloca.in.h
+  lib/count-one-bits.h
   lib/dummy.c
   lib/stdbool.in.h
   lib/strcasecmp.c
@@ -193,11 +196,14 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/strncasecmp.c
   lib/time.in.h
   lib/time_r.c
+  lib/verify.h
   lib/wchar.in.h
   m4/alloca.m4
+  m4/count-one-bits.m4
   m4/extensions.m4
   m4/gnulib-common.m4
   m4/include_next.m4
+  m4/inline.m4
   m4/mbstate_t.m4
   m4/stdbool.m4
   m4/strcase.m4

m4/inline.m4

@@ -0,0 +1,40 @@
+# inline.m4 serial 3
+dnl Copyright (C) 2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Test for the 'inline' keyword or equivalent.
+dnl Define 'inline' to a supported equivalent, or to nothing if not supported,
+dnl like AC_C_INLINE does.  Also, define HAVE_INLINE if 'inline' or an
+dnl equivalent is effectively supported, i.e. if the compiler is likely to
+dnl drop unused 'static inline' functions.
+AC_DEFUN([gl_INLINE],
+[
+  AC_REQUIRE([AC_C_INLINE])
+  AC_CACHE_CHECK([whether the compiler generally respects inline],
+    [gl_cv_c_inline_effective],
+    [if test $ac_cv_c_inline = no; then
+       gl_cv_c_inline_effective=no
+     else
+       dnl GCC defines __NO_INLINE__ if not optimizing or if -fno-inline is
+       dnl specified.
+       dnl Use AC_COMPILE_IFELSE here, not AC_EGREP_CPP, because the result
+       dnl depends on optimization flags, which can be in CFLAGS.
+       dnl (AC_EGREP_CPP looks only at the CPPFLAGS.)
+       AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[]],
+           [[#ifdef __NO_INLINE__
+               #error "inline is not effective"
+             #endif]])],
+         [gl_cv_c_inline_effective=yes],
+         [gl_cv_c_inline_effective=no])
+     fi
+    ])
+  if test $gl_cv_c_inline_effective = yes; then
+    AC_DEFINE([HAVE_INLINE], 1,
+      [Define to 1 if the compiler supports one of the keywords
+       'inline', '__inline__', '__inline' and effectively inlines
+       functions marked as such.])
+  fi
+])