remove configure.ac hack where supposed arguments are spliced out of CXX into CXXFLAGS

bindings/python/compile_cmd.in

@@ -0,0 +1 @@
+@CXX@

bindings/python/setup.py

@@ -64,6 +64,20 @@ try:
 except:
     ldflags = None
 
+# this is to pull out compiler arguments from the CXX flags set up by the
+# configure script. Specifically, the -std=c++11 flag is added to CXX and here
+# we pull out everything starting from the first flag (i.e. something starting
+# with a '-'). The actual command to call the compiler may be more than one
+# word, for instance "ccache g++".
+try:
+    with open('compile_cmd') as _file:
+        cmd = _file.read().split(' ')
+        while len(cmd) > 0 and not cmd[0].startswith('-'):
+            cmd = cmd[1:]
+        extra_cmd += ' '.join(cmd)
+except:
+    pass
+
 ext = None
 packages = None
 

configure.ac

@@ -123,8 +123,6 @@ AS_ECHO "Checking for boost libraries:"
 AX_BOOST_BASE([1.54])
 
 AX_CXX_COMPILE_STDCXX_11([noext], [mandatory])
-# Also put any flags added to CXX into CXXFLAGS
-CXXFLAGS="$CXXFLAGS $(echo "$CXX " | cut -d ' ' -f 2-)"
 
 AX_BOOST_SYSTEM()
 AS_IF([test -z "$BOOST_SYSTEM_LIB"],
@@ -552,6 +550,7 @@ AC_CONFIG_FILES(
   [bindings/python/Makefile]
   [bindings/python/link_flags]
   [bindings/python/compile_flags]
+  [bindings/python/compile_cmd]
   [libtorrent-rasterbar.pc]
   [libtorrent-rasterbar-cmake.pc]
 )