diff --git a/.gitignore b/.gitignore
index d8a8f32c..292a4f51 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,8 +5,8 @@ aclocal.m4
 config.h*
 config.log
 config.status
-/Makefile
-/Makefile.in
+Makefile
+Makefile.in
 *ct-ng*
 !ct-ng.comp
 !ct-ng.in
diff --git a/configure.ac b/configure.ac
index e7feec5e..02f91e09 100644
--- a/configure.ac
+++ b/configure.ac
@@ -38,21 +38,6 @@ AC_ARG_ENABLE(
         [--enable-static],
         [build static libraries (deprecated, ignored)])])
 
-# Check if install(1) supports --strip-program=...
-AC_DEFUN(
-    [ACX_INSTALL_STRIP_PROGRAM],
-    [touch conftest
-     mkdir conftest.dir
-     AC_MSG_CHECKING([if install takes --strip-program option])
-     AS_IF([$INSTALL --strip-program=true -s conftest conftest.dir/conftest 2>/dev/null],
-        [install_with_strip_program=y
-         AC_MSG_RESULT([yes])],
-        [AC_MSG_RESULT([no])])
-     ACX_SET_KCONFIG_OPTION([install_with_strip_program])
-     rm -rf conftest.dir
-     rm -f conftest
-    ])
-     
 # Check for --build and --host...
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
@@ -66,10 +51,7 @@ AC_ARG_PROGRAM
 AC_PROG_MKDIR_P
 AC_PROG_LN_S
 
-CTNG_WITH_DEPRECATED([install], [INSTALL])
-AC_ARG_VAR([INSTALL], [Specify the full path to a BSD-compatible install])
-AC_PROG_INSTALL
-ACX_INSTALL_STRIP_PROGRAM
+CTNG_PROG_INSTALL
 
 CTNG_WITH_DEPRECATED([grep], [GREP])
 AC_ARG_VAR([GREP], [Specify the full path to GNU grep])
@@ -140,13 +122,7 @@ AC_CHECK_PROGS([curl], [curl])
 CTNG_SET_KCONFIG_OPTION([curl])
 AC_SUBST([curl])
 
-CTNG_PROG_STAT(
-    [CTNG_SET_KCONFIG_OPTION([stat_flavor_GNU], [y])
-     CTNG_SET_KCONFIG_OPTION([stat_flavor_BSD])
-    ],
-    [CTNG_SET_KCONFIG_OPTION([stat_flavor_BSD], [y])
-     CTNG_SET_KCONFIG_OPTION([stat_flavor_GNU])
-    ])
+CTNG_PROG_STAT
 
 CTNG_CPU_COUNT
 
diff --git a/m4/ctng_cpu_count.m4 b/m4/ctng_cpu_count.m4
index 4ea50d81..c10ae8bb 100644
--- a/m4/ctng_cpu_count.m4
+++ b/m4/ctng_cpu_count.m4
@@ -1,10 +1,10 @@
 # Find out how to count CPUs
 AC_DEFUN([CTNG_CPU_COUNT],
     [AC_CACHE_CHECK([whether to use getconf or sysctl to count CPUs],
-        [acx_cv_cpu_count],
+        [ctng_cv_cpu_count],
         [getconf _NPROCESSORS_ONLN >/dev/null 2>&1 && \
-             acx_cv_cpu_count="getconf _NPROCESSORS_ONLN"
+             ctng_cv_cpu_count="getconf _NPROCESSORS_ONLN"
          sysctl -n hw.ncpu >/dev/null 2>&1 && \
-             acx_cv_cpu_count="sysctl -n hw.ncpu"])
-     AC_SUBST(CPU_COUNT, "$acx_cv_cpu_count")
+             ctng_cv_cpu_count="sysctl -n hw.ncpu"])
+     AC_SUBST(CPU_COUNT, "$ctng_cv_cpu_count")
     ])
diff --git a/m4/ctng_prog_install.m4 b/m4/ctng_prog_install.m4
new file mode 100644
index 00000000..61cd3580
--- /dev/null
+++ b/m4/ctng_prog_install.m4
@@ -0,0 +1,26 @@
+# Additional checks for install(1)
+
+# Check if install(1) supports --strip-program=...
+AC_DEFUN(
+    [CTNG_INSTALL_STRIP_PROGRAM],
+    [AC_CACHE_CHECK([whether install takes --strip-program option],
+        [ctng_cv_install_with_strip_program],
+        [touch conftest
+         mkdir conftest.dir
+         AS_IF([$INSTALL --strip-program=true -s conftest conftest.dir/conftest 2>/dev/null],
+            [ctng_cv_install_with_strip_program=yes],
+            [ctng_cv_install_with_strip_program=no])
+         rm -rf conftest.dir
+         rm -f conftest
+        ])
+     AS_IF([test "$ctng_cv_install_with_strip_program" = yes], [$1], [$2])
+    ])
+     
+AC_DEFUN([CTNG_PROG_INSTALL],
+    [CTNG_WITH_DEPRECATED([install], [INSTALL])
+     AC_ARG_VAR([INSTALL], [Specify the full path to a BSD-compatible install])
+     AC_PROG_INSTALL
+     CTNG_INSTALL_STRIP_PROGRAM(
+        [CTNG_SET_KCONFIG_OPTION([install_with_strip_program], [y])],
+        [CTNG_SET_KCONFIG_OPTION([install_with_strip_program])])
+    ])
diff --git a/m4/ctng_prog_stat.m4 b/m4/ctng_prog_stat.m4
index 5db34693..6bee0760 100644
--- a/m4/ctng_prog_stat.m4
+++ b/m4/ctng_prog_stat.m4
@@ -2,23 +2,30 @@
 # string (BSD or GNU). Defines ac_cv_stat_flavor to either GNU or BSD;
 # and evaluates either IF-GNU or IF-BSD expression.
 #   CTNG_PROG_STAT([IF-GNU], [IF-BSD])
-AC_DEFUN([CTNG_PROG_STAT],
-    [AX_REQUIRE_DEFINED([CTNG_CHECK_PROGS_REQ])
-     CTNG_CHECK_PROGS_REQ([stat], [stat])
-     AC_CACHE_CHECK([whether stat takes GNU or BSD format],
-         [acx_cv_stat_flavor],
+AC_DEFUN([CTNG_PROG_STAT_FORMAT],
+    [AC_CACHE_CHECK([whether stat takes GNU or BSD format],
+         [ctng_cv_stat_flavor],
          [touch conftest
           chmod 642 conftest
           attr_bsd=$(stat -f '%Lp' conftest 2>/dev/null)
           attr_gnu=$(stat -c '%a' conftest 2>/dev/null)
           rm -f conftest
           AS_IF([test "$attr_bsd" = "642"],
-              [acx_cv_stat_flavor=BSD
-               $2
-              ],
+              [ctng_cv_stat_flavor=BSD],
               [test "$attr_gnu" = "642"],
-              [acx_cv_stat_flavor=GNU
-               $1
-              ],
-              [AC_MSG_ERROR([cannot determine stat(1) format option])])])
+              [ctng_cv_stat_flavor=GNU],
+              [ctng_cv_stat_flavor=unknown])])
+     AS_IF([test "$ctng_cv_stat_flavor" = "GNU" ], [$1],
+        [test "$ctng_cv_stat_flavor" = "BSD" ], [$2],
+        [AC_MSG_ERROR([cannot determine stat(1) format option])])
+    ])
+
+AC_DEFUN([CTNG_PROG_STAT],
+    [AX_REQUIRE_DEFINED([CTNG_CHECK_PROGS_REQ])
+     CTNG_CHECK_PROGS_REQ([stat], [stat])
+     CTNG_PROG_STAT_FORMAT(
+        [CTNG_SET_KCONFIG_OPTION([stat_flavor_GNU], [y])
+         CTNG_SET_KCONFIG_OPTION([stat_flavor_BSD])],
+        [CTNG_SET_KCONFIG_OPTION([stat_flavor_BSD], [y])
+         CTNG_SET_KCONFIG_OPTION([stat_flavor_GNU])])
     ])