configure: remove php test

+ the remnants in the build system & README

the documentation that required php was removed in:
50fa585 Removing examples code generation and making them static.

Change-Id: Ibf00dca9ab2715fc21e8de358807b63d1445662c

README

@@ -12,22 +12,20 @@ COMPILING THE APPLICATIONS/LIBRARIES:
 
     * All x86 targets require the Yasm[1] assembler be installed.
     * All Windows builds require that Cygwin[2] be installed.
-    * Building the documentation requires PHP[3] and Doxygen[4]. If you do not
-      have these packages, you must pass --disable-install-docs to the
-      configure script.
-    * Downloading the data for the unit tests requires curl[5] and sha1sum.
+    * Building the documentation requires Doxygen[3]. If you do not
+      have this package, the install-docs option will be disabled.
+    * Downloading the data for the unit tests requires curl[4] and sha1sum.
       sha1sum is provided via the GNU coreutils, installed by default on
       many *nix platforms, as well as MinGW and Cygwin. If coreutils is not
       available, a compatible version of sha1sum can be built from
-      source[6]. These requirements are optional if not running the unit
+      source[5]. These requirements are optional if not running the unit
       tests.
 
     [1]: http://www.tortall.net/projects/yasm
     [2]: http://www.cygwin.com
-    [3]: http://php.net
-    [4]: http://www.doxygen.org
-    [5]: http://curl.haxx.se
-    [6]: http://www.microbrew.org/tools/md5sha1sum/
+    [3]: http://www.doxygen.org
+    [4]: http://curl.haxx.se
+    [5]: http://www.microbrew.org/tools/md5sha1sum/
 
   2. Out-of-tree builds
   Out of tree builds are a supported method of building the application. For

configure

@@ -189,7 +189,7 @@ fi
 # install everything except the sources, by default. sources will have
 # to be enabled when doing dist builds, since that's no longer a common
 # case.
-enabled doxygen && php -v >/dev/null 2>&1 && enable_feature install_docs
+enabled doxygen && enable_feature install_docs
 enable_feature install_bins
 enable_feature install_libs
 

docs.mk

@@ -23,12 +23,6 @@ CODEC_DOX :=    mainpage.dox \
 # Other doxy files sourced in Markdown
 TXT_DOX = $(call enabled,TXT_DOX)
 
-%.dox: %.txt
-	@echo "    [DOXY] $@"
-	@$(SRC_PATH_BARE)/examples/gen_example_doxy.php \
-             $(@:.dox=)  "$($@.DESC)" > $@ < $<
-
-
 EXAMPLE_PATH += $(SRC_PATH_BARE) #for CHANGELOG, README, etc
 EXAMPLE_PATH += $(SRC_PATH_BARE)/examples