diff options
Diffstat (limited to 'autoconf')
| -rw-r--r-- | autoconf/configure.ac | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index 102147c4f2..a1426c1832 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -65,6 +65,32 @@ AC_PROG_CC(clang llvm-gcc gcc) AC_PROG_CXX(clang++ llvm-g++ g++) AC_PROG_CPP +dnl If CXX is Clang, check that it can find and parse C++ standard library +dnl headers. +if test "$CXX" = "clang++" ; then + AC_MSG_CHECKING([whether clang works]) + AC_LANG_PUSH([C++]) + dnl Note that space between 'include' and '(' is required. There's a broken + dnl regex in aclocal that otherwise will think that we call m4's include + dnl builtin. + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <limits> +#if __has_include (<cxxabi.h>) +#include <cxxabi.h> +#endif +#if __has_include (<unwind.h>) +#include <unwind.h> +#endif +]])], +[ + AC_MSG_RESULT([yes]) +], +[ + AC_MSG_RESULT([no]) + AC_MSG_ERROR([Selected compiler could not find or parse C++ standard library headers. Rerun with CC=c-compiler CXX=c++-compiler ./configure ...]) +]) + AC_LANG_POP([C++]) +fi + dnl Configure all of the projects present in our source tree. While we could dnl just AC_CONFIG_SUBDIRS on the set of directories in projects that have a dnl configure script, that usage of the AC_CONFIG_SUBDIRS macro is deprecated. |