diff options
Diffstat (limited to 'libstdc++-v3/configure.in')
| -rw-r--r-- | libstdc++-v3/configure.in | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/libstdc++-v3/configure.in b/libstdc++-v3/configure.in index 4be7d9db261..c3ff82b8f16 100644 --- a/libstdc++-v3/configure.in +++ b/libstdc++-v3/configure.in @@ -70,6 +70,19 @@ GLIBCPP_ENABLE_CONCEPT_CHECKS # Check for headers necessary for libsupc++ using dyn-string.c/cxa_demangle.c AC_CHECK_HEADERS(string.h stdlib.h) +# No surprises, no surprises... +if test $ATOMICITYH = cpu/generic ; then + AC_MSG_WARN([No native atomic operations are provided yet for this platform.]) + if test $target_thread_file = single; then + AC_MSG_WARN([They cannot be faked when thread support is disabled.]) + AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.]) + else + AC_MSG_WARN([They will be faked using a mutex.]) + AC_MSG_WARN([Performance of certain classes will degrade as a result.]) + fi +fi + + if test -n "$with_cross_host" || test x"$build" != x"$host"; then # We are being configured with some form of cross compiler. @@ -397,6 +410,7 @@ else GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT GLIBCPP_CHECK_WCHAR_T_SUPPORT GLIBCPP_CHECK_STDLIB_SUPPORT + GLIBCPP_CHECK_UNISTD_SUPPORT AC_LC_MESSAGES AC_TRY_COMPILE([ @@ -416,7 +430,7 @@ GLIBCPP_ENABLE_SYMVERS([yes]) # Propagate the target-specific source directories through the build chain. # (Nothing currently uses cpu_include_dir directly; only ATOMICITYH -# uses it, and they only get used here.) +# uses it, and it only gets used in this file.) OS_INC_SRCDIR=config/${os_include_dir} ATOMICITY_INC_SRCDIR=config/${ATOMICITYH} AC_SUBST(OS_INC_SRCDIR) |