diff options
| -rw-r--r-- | config_host.mk.in | 1 | ||||
| -rw-r--r-- | configure.ac | 28 | ||||
| -rw-r--r-- | solenv/gbuild/platform/com_GCC_defs.mk | 4 |
3 files changed, 33 insertions, 0 deletions
diff --git a/config_host.mk.in b/config_host.mk.in index 4d1a98967551..df8205e8ad1d 100644 --- a/config_host.mk.in +++ b/config_host.mk.in @@ -305,6 +305,7 @@ export HAVE_GNUMAKE_FILE_FUNC=@HAVE_GNUMAKE_FILE_FUNC@ export HAVE_LD_BSYMBOLIC_FUNCTIONS=@HAVE_LD_BSYMBOLIC_FUNCTIONS@ export HAVE_LD_HASH_STYLE=@HAVE_LD_HASH_STYLE@ export HAVE_LIBCPP=@HAVE_LIBCPP@ +export HAVE_LIBCPP_DEBUG=@HAVE_LIBCPP_DEBUG@ export HAVE_LIBSTDCPP=@HAVE_LIBSTDCPP@ export HAVE_POSIX_FALLOCATE=@HAVE_POSIX_FALLOCATE@ export HAVE_WDEPRECATED_COPY_DTOR=@HAVE_WDEPRECATED_COPY_DTOR@ diff --git a/configure.ac b/configure.ac index 2c65a1200f69..2f0f5a574ed6 100644 --- a/configure.ac +++ b/configure.ac @@ -7419,6 +7419,34 @@ AC_LANG_POP([C++]) AC_SUBST([HAVE_LIBSTDCPP]) AC_SUBST([HAVE_LIBCPP]) +HAVE_LIBCPP_DEBUG= +if test -n "$HAVE_LIBCPP" -a -n "$ENABLE_DBGUTIL"; then + # Libc++ supports debug mode only if built for it, Mac libc++ isn't, + # and there would be undefined references to debug functions. + # Moreover std::to_string() has a bug (https://reviews.llvm.org/D125184). + AC_MSG_CHECKING([if libc++ has a usable debug mode]) + AC_LANG_PUSH([C++]) + AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#define _LIBCPP_DEBUG 1 +#include <string> +#include <vector> +int foo(const std::vector<int>& v) { return *v.begin(); } +int main() +{ + std::vector<int> v{ 1, 2 }; + std::string s = "xxxxxxxxxxxxxxxxxxxxxxxxx" + std::to_string(10); + return (foo(v) + s.size()) != 0 ? 0 : 1; +} +]])], + [AC_MSG_RESULT(yes) + HAVE_LIBCPP_DEBUG=1 + ], + [AC_MSG_RESULT(no)] + ) + AC_LANG_POP([C++]) +fi +AC_SUBST([HAVE_LIBCPP_DEBUG]) + dnl =================================================================== dnl Check for gperf dnl =================================================================== diff --git a/solenv/gbuild/platform/com_GCC_defs.mk b/solenv/gbuild/platform/com_GCC_defs.mk index c7cc1c3ef577..c2db27243457 100644 --- a/solenv/gbuild/platform/com_GCC_defs.mk +++ b/solenv/gbuild/platform/com_GCC_defs.mk @@ -53,6 +53,10 @@ gb_COMPILERDEFS := \ ifeq ($(gb_ENABLE_DBGUTIL),$(true)) ifneq ($(HAVE_LIBSTDCPP),) gb_COMPILERDEFS_STDLIB_DEBUG = -D_GLIBCXX_DEBUG +else +ifneq ($(HAVE_LIBCPP_DEBUG),) +gb_COMPILERDEFS_STDLIB_DEBUG = -D_LIBCPP_DEBUG=1 +endif endif gb_COMPILERDEFS += $(gb_COMPILERDEFS_STDLIB_DEBUG) endif |