diff options
Diffstat (limited to 'contrib/libstdc++/acinclude.m4')
| -rw-r--r-- | contrib/libstdc++/acinclude.m4 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/contrib/libstdc++/acinclude.m4 b/contrib/libstdc++/acinclude.m4 index f467b60..cf541ed 100644 --- a/contrib/libstdc++/acinclude.m4 +++ b/contrib/libstdc++/acinclude.m4 @@ -620,6 +620,25 @@ AC_DEFUN([GLIBCXX_CHECK_LFS], [ dnl +dnl Check for whether a fully dynamic basic_string implementation should +dnl be turned on, that does not put empty objects in per-process static +dnl memory (mostly useful together with shared memory allocators, see PR +dnl libstdc++/16612 for details). +dnl +dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING +dnl --disable-fully-dynamic-string leaves _GLIBCXX_FULLY_DYNAMIC_STRING undefined +dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)] +dnl Where DEFAULT is either `yes' or `no'. +dnl +AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [ + GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory]) + if test $enable_fully_dynamic_string = yes; then + AC_DEFINE(_GLIBCXX_FULLY_DYNAMIC_STRING) + fi +]) + + +dnl dnl Does any necessary configuration of the testsuite directory. Generates dnl the testsuite_hooks.h header. dnl |
