[patch] Only configure libstdc++-v3/python dir for hosted builds

[Jonathan Wakely]

On 27/08/14 18:50 +0100, Jonathan Wakely wrote:
>Currently a freestanding build installs the Python GDB hooks as
>${libdir}/libstdc*-gdb.py (with a literal * character in the filename)
>because there is no libstdc++.so library file and the wildcard doesn't
>get expanded (see the install-data-local target in the
>libstdc++-v3/python/Makefile.am file).
>
>I don't see any reason to install any Python files for a freestanding
>build, the pretty printers and type printers are only useful for types
>defined in the hosted library, so this just disables the entire
>directory.

1.txt makes the change described above, so the Python printers are not
installed for freestanding builds (and also regenerates the configure
script which I forgot to commit yesterday after changing
libtool_VERSION).

2.txt disables std::random_shuffle for freestanding builds, because it
uses std::rand() which isn't available.

Tested x86_64-linux, ppc64le-linux, committed to trunk.
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commit 24e549e0e2484d61812bc93517bad97671884801
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Apr 28 19:23:00 2015 +0100

    	* Makefile.am (SUBDIRS): Move python to hosted_source.
    	* Makefile.in: Regenerate.
    	* acinclude.m4 (glibcxx_SUBDIRS): Reorder.
    	* configure: Regenerate.

diff --git a/libstdc++-v3/Makefile.am b/libstdc++-v3/Makefile.am
index 808beba..b1bcba7 100644
--- a/libstdc++-v3/Makefile.am
+++ b/libstdc++-v3/Makefile.am
@@ -23,12 +23,12 @@
 include $(top_srcdir)/fragment.am
 
 if GLIBCXX_HOSTED
-  hosted_source = src doc po testsuite
+## Note that python must come after src.
+  hosted_source = src doc po testsuite python
 endif
 
 ## Keep this list sync'd with acinclude.m4:GLIBCXX_CONFIGURE.
-## Note that python must come after src.
-SUBDIRS = include libsupc++ $(hosted_source) python
+SUBDIRS = include libsupc++ $(hosted_source)
 
 ACLOCAL_AMFLAGS = -I . -I .. -I ../config
 
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 196b4ff..ffa2122 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -49,7 +49,7 @@ AC_DEFUN([GLIBCXX_CONFIGURE], [
   # Keep these sync'd with the list in Makefile.am.  The first provides an
   # expandable list at autoconf time; the second provides an expandable list
   # (i.e., shell variable) at configure time.
-  m4_define([glibcxx_SUBDIRS],[include libsupc++ python src src/c++98 src/c++11 doc po testsuite])
+  m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 doc po testsuite python])
   SUBDIRS='glibcxx_SUBDIRS'
 
   # These need to be absolute paths, yet at the same time need to
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commit d90a2639da11db31d370fa62962f53a6d554e456
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Apr 7 11:39:14 2015 +0100

    	* include/bits/stl_algo.h (random_shuffle): Only define for hosted
    	implementations.

diff --git a/libstdc++-v3/include/bits/stl_algo.h b/libstdc++-v3/include/bits/stl_algo.h
index 53c455b..56cc743 100644
--- a/libstdc++-v3/include/bits/stl_algo.h
+++ b/libstdc++-v3/include/bits/stl_algo.h
@@ -4420,6 +4420,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO
 				std::__iterator_category(__result));
     }
 
+#if _GLIBCXX_HOSTED
   /**
    *  @brief Randomly shuffle the elements of a sequence.
    *  @ingroup mutating_algorithms
@@ -4450,6 +4451,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO
 	      std::iter_swap(__i, __j);
 	  }
     }
+#endif
 
   /**
    *  @brief Shuffle the elements of a sequence using a random number