SConfigure

   1 # -*- python -*-
   2
   3 Import('env')
   4
   5 ###########################################################################
   6 # Custom configuration checks
   7
   8 @env.ConfTest()
   9 def CheckSTLCopyN(context):
  10     context.Message("Checking for 'copy_n' implementation... ")
  11     versions = [ ('<algorithm>',     'std::copy_n',       'STD'),
  12                  ('<ext/algorithm>', '__gnu_cxx::copy_n', 'GNUCXX') ]
  13     for include, name, define in versions:
  14         ret = context.TryCompile("#include %s\n"
  15                                  "int main(int,char**) { int *a,*b; %s(a,0,b); }\n"
  16                                  % (include, name),
  17                                  ".cc")
  18         if ret:
  19             context.Result(name)
  20             context.sconf.Define("HAVE_%s_COPYN" % define,
  21                                  1,
  22                                  "Define one of "
  23                                  + ", ".join(("HAVE_%s_COPYN" % elt[2] for elt in versions)))
  24             return ret
  25
  26     context.Result(False)
  27     return False
  28
  29
  30 @env.ConfTest()
  31 def CheckTempBufferStrategy(context):
  32     context.Message("Checking for optimal temporary buffer strategy... ")
  33
  34     def check():
  35       # locals
  36       ret = context.TryCompile("void test(int n){int a[n];}",".cc")
  37       if ret: return "locals"
  38
  39       # alloca
  40       ret = context.TryCompile("#include <alloca.h>\n"
  41                                "void test(int a){void *b(alloca(a));}"
  42                                ".cc")
  43       if ret: return "alloca"
  44
  45       # fallback: new
  46       return "new"
  47
  48     ret = check()
  49     context.Result(ret)
  50     context.sconf.Define("SENF_BUFFER_USE_%s" % ret.upper(),
  51                          1,
  52                          "Define one of SENF_BUFFER_USE_LOCALS, SENF_BUFFER_USE_ALLOCA, "
  53                          "SENF_BUFFER_USE_NEW")
  54     return ret
  55
  56 @env.ConfTest()
  57 def CheckValgrind(context):
  58     context.Message( "Checking for valgrind... " )
  59     ret = context.TryAction(['$VALGRIND --version >$TARGET'])
  60     context.Result( ret[1].strip() or False )
  61     return ret[0]
  62
  63 @env.ConfTest()
  64 def CheckValgrindWildcards(context):
  65     context.Message( "Checking whether valgrind supports '...' wildcards in suppressions... " )
  66     ret = context.TryAction(['$VALGRIND --suppressions=$SOURCE /bin/true'],
  67                             "{\n test_suppression\n Memcheck:Addr4\n ...\n fun:foo\n}\n",
  68                             ".sup")
  69     context.Result( ret[0] )
  70     return ret[0]
  71
  72 ###########################################################################
  73
  74 conf = env.Configure(clean=False, help=False, config_h="#/senf/autoconf.hh")
  75
  76 # Boost
  77 res = conf.CheckBoostVersion(fail=True)
  78 res = conf.CheckBoostVariants()
  79 res = conf.CheckCXXHeader("boost/spirit/include/classic.hpp")
  80 res = conf.CheckCXXHeader("boost/bimap.hpp"); \
  81     conf.env.Replace(NEED_BOOST_EXT = not res)
  82
  83 # Compiler support
  84 res = conf.CheckTempBufferStrategy()
  85
  86 # Standard library stuff
  87 res = conf.CheckFunc("timerfd_create")
  88 res = conf.CheckSymbolWithExpression(
  89     "le16toh", "le16toh(0)", "#include <senf/Packets/80211Bundle/radiotap/platform.h>")
  90 res = conf.CheckSymbolWithExpression(
  91     "le32toh", "le32toh(0)", "#include <senf/Packets/80211Bundle/radiotap/platform.h>")
  92 res = conf.CheckByteorder()
  93 res = conf.CheckSTLCopyN(); \
  94     conf.env.Fail(condition=not res, message="No 'copy_n' implementation found")
  95
  96 # valgrind
  97 res = conf.CheckValgrind() and conf.CheckValgrindWildcards(); \
  98     conf.env.Replace(HAVE_VALGRIND = res)
  99
 100 env = conf.Finish()