uniformly use AM_CPPFLAGS, avoid deprecated INCLUDES

Since automake 1.12.4, the warnings are issued on running automake:

  warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')

Avoid INCLUDES and roll these flags into AM_CPPFLAGS.

Compile tested on:
  Ubuntu 10.04 (automake 1:1.11.1-1)
  Ubuntu 12.04 (automake 1:1.11.3-1ubuntu2)
  Arch Linux (automake 1.12.4)

6 files changed, 63 insertions, 66 deletions

diff --git a/docs/examples/Makefile.am b/docs/examples/Makefile.am
index 27d20dfb6..eb4e7c767 100644
--- a/docs/examples/Makefile.am
+++ b/docs/examples/Makefile.am
@@ -34,14 +34,13 @@ EXTRA_DIST = README Makefile.example Makefile.inc Makefile.m32 \
 # $(top_builddir)/include for generated curlbuild.h included from lib/setup.h
 # $(top_srcdir)/include is for libcurl's external include files
 
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include \
+              -DCURL_NO_OLDIES
 
 LIBDIR = $(top_builddir)/lib
 
-AM_CPPFLAGS = -DCURL_NO_OLDIES
-
 # Mostly for Windows build targets, when using static libcurl
 if USE_CPPFLAG_CURL_STATICLIB
 AM_CPPFLAGS += -DCURL_STATICLIB
diff --git a/lib/Makefile.am b/lib/Makefile.am
index a9f5a8e99..f00b14340 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -64,23 +64,21 @@ CFLAG_CURL_SYMBOL_HIDING = @CFLAG_CURL_SYMBOL_HIDING@
 # $(top_srcdir)/ares is for in-tree c-ares's external include files
 
 if USE_EMBEDDED_ARES
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib            \
-           -I$(top_builddir)/ares         \
-           -I$(top_srcdir)/ares
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib            \
+              -I$(top_builddir)/ares         \
+              -I$(top_srcdir)/ares
 else
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib
 endif
 
-AM_CPPFLAGS =
-
 # Mostly for Windows build targets, when building libcurl library
 if USE_CPPFLAG_BUILDING_LIBCURL
 AM_CPPFLAGS += -DBUILDING_LIBCURL
diff --git a/src/Makefile.am b/src/Makefile.am
index 6e8ce38a1..b53127d27 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -34,19 +34,19 @@ AUTOMAKE_OPTIONS = foreign nostdinc
 # $(top_srcdir)/lib is for libcurl's lib/setup.h and other "borrowed" files
 # $(top_srcdir)/src is for curl's src/tool_setup.h and "curl-private" files
 
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_builddir)/src          \
-           -I$(top_srcdir)/lib            \
-           -I$(top_srcdir)/src
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_builddir)/src          \
+              -I$(top_srcdir)/lib            \
+              -I$(top_srcdir)/src
 
 bin_PROGRAMS = curl
 
 # Mostly for Windows build targets, when using static libcurl
 if USE_CPPFLAG_CURL_STATICLIB
-AM_CPPFLAGS = -DCURL_STATICLIB
+AM_CPPFLAGS += -DCURL_STATICLIB
 endif
 
 include Makefile.inc
diff --git a/tests/libtest/Makefile.am b/tests/libtest/Makefile.am
index 7b8d8fc04..bc9f532ae 100644
--- a/tests/libtest/Makefile.am
+++ b/tests/libtest/Makefile.am
@@ -35,19 +35,19 @@ AUTOMAKE_OPTIONS = foreign nostdinc
 # $(top_srcdir)/ares is for in-tree c-ares's external include files
 
 if USE_EMBEDDED_ARES
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib            \
-           -I$(top_builddir)/ares         \
-           -I$(top_srcdir)/ares
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib            \
+              -I$(top_builddir)/ares         \
+              -I$(top_srcdir)/ares
 else
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib
 endif
 
 EXTRA_DIST = test75.pl test307.pl test610.pl test613.pl test1013.pl	\
diff --git a/tests/server/Makefile.am b/tests/server/Makefile.am
index 9d58e085f..7e6db1ffe 100644
--- a/tests/server/Makefile.am
+++ b/tests/server/Makefile.am
@@ -35,19 +35,19 @@ AUTOMAKE_OPTIONS = foreign nostdinc
 # $(top_srcdir)/ares is for in-tree c-ares's external include files
 
 if USE_EMBEDDED_ARES
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib            \
-           -I$(top_builddir)/ares         \
-           -I$(top_srcdir)/ares
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib            \
+              -I$(top_builddir)/ares         \
+              -I$(top_srcdir)/ares
 else
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib
 endif
 
 if DOING_NATIVE_WINDOWS
diff --git a/tests/unit/Makefile.am b/tests/unit/Makefile.am
index 78166f869..058216814 100644
--- a/tests/unit/Makefile.am
+++ b/tests/unit/Makefile.am
@@ -35,28 +35,28 @@ AUTOMAKE_OPTIONS = foreign nostdinc
 # $(top_srcdir)/ares is for in-tree c-ares's external include files
 
 if USE_EMBEDDED_ARES
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib            \
-           -I$(top_srcdir)/tests/libtest  \
-           -I$(top_builddir)/ares         \
-           -I$(top_srcdir)/ares
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib            \
+              -I$(top_srcdir)/tests/libtest  \
+              -I$(top_builddir)/ares         \
+              -I$(top_srcdir)/ares
 else
-INCLUDES = -I$(top_builddir)/include/curl \
-           -I$(top_builddir)/include      \
-           -I$(top_srcdir)/include        \
-           -I$(top_builddir)/lib          \
-           -I$(top_srcdir)/lib            \
-           -I$(top_srcdir)/tests/libtest
+AM_CPPFLAGS = -I$(top_builddir)/include/curl \
+              -I$(top_builddir)/include      \
+              -I$(top_srcdir)/include        \
+              -I$(top_builddir)/lib          \
+              -I$(top_srcdir)/lib            \
+              -I$(top_srcdir)/tests/libtest
 endif
 
 EXTRA_DIST = Makefile.inc
 
 LDADD = $(top_builddir)/lib/libcurlu.la @LDFLAGS@ @LIBCURL_LIBS@ @LIBS@
 DEPENDENCIES = $(top_builddir)/lib/libcurlu.la
-AM_CPPFLAGS = -DUNITTESTS
+AM_CPPFLAGS += -DUNITTESTS
 
 # Mostly for Windows build targets, when using static libcurl
 if USE_CPPFLAG_CURL_STATICLIB