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Refine glibc++ feature tests based on feedback from Jonathan Wakely

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[SVN r53057]
This commit is contained in:
Beman Dawes
2009-05-16 18:41:33 +00:00
parent 8c5aee782e
commit f814c8fef1
2 changed files with 17 additions and 4 deletions
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20
include/boost/config/stdlib/libstdcpp3.hpp
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@ -77,9 +77,21 @@
# endif
#endif
// C++0x headers in 20090124 (GCC 4.3.2) and later
// stdlibc++ C++0x support is detected via __GNUC__, __GNUC_MINOR__, and possibly
// __GNUC_PATCHLEVEL__ at the suggestion of Jonathan Wakely, one of the stdlibc++
// developers. He also commented:
//
#if !defined(__GLIBCXX__) || __GLIBCXX__<20090124 || !defined(__GXX_EXPERIMENTAL_CXX0X__)
// "I'm not sure how useful __GLIBCXX__ is for your purposes, for instance in
// GCC 4.2.4 it is set to 20080519 but in GCC 4.3.0 it is set to 20080305.
// Although 4.3.0 was released earlier than 4.2.4, it has better C++0x support
// than any release in the 4.2 series."
//
// Another resource for understanding stdlibc++ features is:
// http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#manual.intro.status.standard.200x
// C++0x headers in GCC 4.3.0 and later
//
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3) || !defined(__GXX_EXPERIMENTAL_CXX0X__)
# define BOOST_NO_0X_HDR_ARRAY
# define BOOST_NO_0X_HDR_RANDOM
# define BOOST_NO_0X_HDR_REGEX
@ -90,9 +102,9 @@
# define BOOST_NO_0X_HDR_UNORDERED_SET
#endif
// C++0x headers in 20090421 (GCC 4.4.0) and later
// C++0x headers in GCC 4.4.0 and later
//
#if !defined(__GLIBCXX__) || __GLIBCXX__<20090421 || !defined(__GXX_EXPERIMENTAL_CXX0X__)
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 4) || !defined(__GXX_EXPERIMENTAL_CXX0X__)
# define BOOST_NO_0X_HDR_CHRONO
# define BOOST_NO_0X_HDR_CONDITION_VARIABLE
# define BOOST_NO_0X_HDR_FORWARD_LIST

1
test/config_info.cpp
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@ -154,6 +154,7 @@ void print_compiler_macros()
// GNUC options:
PRINT_MACRO(__GNUC__);
PRINT_MACRO(__GNUC_MINOR__);
PRINT_MACRO(__GNUC_PATCHLEVEL__);
PRINT_MACRO(__STDC_VERSION__);
PRINT_MACRO(__GNUG__);
PRINT_MACRO(__STRICT_ANSI__);