| Message ID | mcrk4jr7uup.fsf@google.com |
|---|---|
| State | New |
| Headers | show |
* Ian Lance Taylor wrote on Thu, Dec 02, 2010 at 10:01:02PM CET: > This simple patch to gcc/configure.ac #defines ENABLE_BUILD_WITH_CXX > when appropriate, and checks for the existence of a few C++ header > files. This is, of course, for the Go frontend merge. The Go frontend > tests these values to control the compilation of the C++ code. > > Bootstrapped on x86_64-unknown-linux-gnu. OK for mainline? OK. > 2010-12-02 Ian Lance Taylor <iant@google.com> > > * configure.ac: AC_DEFINE ENABLE_BUILD_WITH_CXX. Check for C++ > header files unordered_map, tr1/unordered_map, and ext/hash_map. > * configure, config.in: Rebuild. > --- configure.ac (revision 167382) > +++ configure.ac (working copy) > +# -------------------- > +# Checks for C++ headers > +# -------------------- Align dashes with text? ;-) Thanks, Ralf
Index: configure.ac =================================================================== --- configure.ac (revision 167382) +++ configure.ac (working copy) @@ -589,6 +589,10 @@ AC_ARG_ENABLE(build-with-cxx, ENABLE_BUILD_WITH_CXX=$enableval, ENABLE_BUILD_WITH_CXX=no) AC_SUBST(ENABLE_BUILD_WITH_CXX) +if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then + AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1, + [Define if building with C++.]) +fi # With stabs AC_ARG_WITH(stabs, @@ -905,6 +909,18 @@ AC_CHECK_HEADER(pthread.h, [have_pthread gcc_AC_C_CHAR_BIT AC_C_BIGENDIAN +# -------------------- +# Checks for C++ headers +# -------------------- + +AC_LANG_PUSH(C++) + +AC_CHECK_HEADERS(unordered_map) +AC_CHECK_HEADERS(tr1/unordered_map) +AC_CHECK_HEADERS(ext/hash_map) + +AC_LANG_POP(C++) + # -------- # UNSORTED # --------