From 52a5f903605760f54370863679740f5ac0354f13 Mon Sep 17 00:00:00 2001
From: randy-waterhouse <noone@yodasan>
Date: Sun, 14 Sep 2014 11:09:25 +1200
Subject: Create the common location for all m4 autotool build scripts,
 build-aux/m4.

Update .gitignore.
---
 build-aux/m4/bitcoin_subdir_to_include.m4 | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 build-aux/m4/bitcoin_subdir_to_include.m4

(limited to 'build-aux/m4/bitcoin_subdir_to_include.m4')

diff --git a/build-aux/m4/bitcoin_subdir_to_include.m4 b/build-aux/m4/bitcoin_subdir_to_include.m4
new file mode 100644
index 0000000000..66f106c7d4
--- /dev/null
+++ b/build-aux/m4/bitcoin_subdir_to_include.m4
@@ -0,0 +1,14 @@
+dnl BITCOIN_SUBDIR_TO_INCLUDE([CPPFLAGS-VARIABLE-NAME],[SUBDIRECTORY-NAME],[HEADER-FILE])
+dnl SUBDIRECTORY-NAME must end with a path separator
+AC_DEFUN([BITCOIN_SUBDIR_TO_INCLUDE],[
+  if test "x$2" = "x"; then
+    AC_MSG_RESULT([default])
+  else
+    echo "#include <$2$3.h>" >conftest.cpp
+    newinclpath=`${CXXCPP} ${CPPFLAGS} -M conftest.cpp 2>/dev/null | [ tr -d '\\n\\r\\\\' | sed -e 's/^.*[[:space:]:]\(\/[^[:space:]]*\)]$3[\.h[[:space:]].*$/\1/' -e t -e d`]
+    AC_MSG_RESULT([${newinclpath}])
+    if test "x${newinclpath}" != "x"; then
+      eval "$1=\"\$$1\"' -I${newinclpath}'"
+    fi
+  fi
+])
-- 
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