X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=config_subdir.m4;fp=config_subdir.m4;h=f32bc89e0cd4858d4bf10e6dbf113c2fa96a81ae;hb=8c0c259ed64a7a182c82edfca9809cfe33cb96ce;hp=0000000000000000000000000000000000000000;hpb=d80fca527a6618595a118381a2cd2a569f85889f;p=fw%2Fopenocd

diff --git a/config_subdir.m4 b/config_subdir.m4
new file mode 100644
index 000000000..f32bc89e0
--- /dev/null
+++ b/config_subdir.m4
@@ -0,0 +1,27 @@
+dnl
+dnl If needed, define the m4_ifblank and m4_ifnblank macros from autoconf 2.64
+dnl This allows us to run with earlier Autoconfs as well.
+ifdef([m4_ifblank],[],[
+m4_define([m4_ifblank],
+[m4_if(m4_translit([[$1]],  [ ][	][
+]), [], [$2], [$3])])])
+dnl
+ifdef([m4_ifnblank],[],[
+m4_define([m4_ifnblank],
+[m4_if(m4_translit([[$1]],  [ ][	][
+]), [], [$3], [$2])])])
+dnl
+
+dnl AC_CONFIG_SUBDIRS does not allow configure options to be passed
+dnl to subdirs, this function allows that by creating a configure.gnu
+dnl script that prepends configure options and then calls the real
+dnl configure script
+AC_DEFUN([AX_CONFIG_SUBDIR_OPTION],
+[
+AC_CONFIG_SUBDIRS([$1])
+
+m4_ifblank([$2], [rm -f $srcdir/$1/configure.gnu],
+[printf "#!/bin/sh
+"\$"SHELL "../$srcdir/$1/configure" $2 "\$"@" > "$srcdir/$1/configure.gnu"
+])
+])