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| author | Boris Kolpackov <boris@codesynthesis.com> | 2012-03-02 12:31:38 +0200 |
|---|---|---|
| committer | Boris Kolpackov <boris@codesynthesis.com> | 2012-03-02 12:31:38 +0200 |
| commit | d43a0047151d490dcd061e3f105bfc4eb9fac854 (patch) | |
| tree | 93546657349fc5d8529376b7235ecc01bdaa73f2 /m4 | |
| parent | c55878df67c400d9ac940ee2d8dbd6e922af5ac3 (diff) | |
New example that shows C++11 support, build infrastructure for C++11
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/c++11.m4 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/m4/c++11.m4 b/m4/c++11.m4 new file mode 100644 index 0000000..774f20d --- /dev/null +++ b/m4/c++11.m4 @@ -0,0 +1,38 @@ +dnl file : m4/cxx11.m4 +dnl copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC +dnl license : GNU GPL v2; see accompanying LICENSE file +dnl +dnl CXX11(MACRO, DESCRIPTION) +dnl +dnl Check if we are compiling in the C++11 mode. If we are, define MACRO as +dnl both a macro and conditional as well as set the cxx11 variable to 'yes'. +dnl +AC_DEFUN([CXX11], +[ +cxx11=no + +AC_MSG_CHECKING([whether we are in C++11 mode]) + +CXX_LIBTOOL_LINK_IFELSE( +AC_LANG_SOURCE([[ +#include <memory> + +int +main () +{ + std::shared_ptr<int> p (new int (10)); + *p = 11; +} +]]), +[cxx11=yes]) + +if test x"$cxx11" = xyes; then + AC_MSG_RESULT([yes]) + AC_DEFINE([$1], [1], [$2]) +else + AC_MSG_RESULT([no]) +fi + +AM_CONDITIONAL([$1], [test x$cxx11 = xyes]) + +])dnl |