1 dnl Usage: TL_AC_GXX_INCLUDE_DIR 2 dnl 3 dnl Set $gxx_include_dir to the location of the installed C++ include 4 dnl directory. The value depends on $gcc_version and the configuration 5 dnl options --with-gxx-include-dir and --enable-version-specific-runtime-libs. 6 dnl 7 dnl If you change the default here, you'll need to change the gcc and 8 dnl libstdc++-v3 subdirectories too. 9 AC_DEFUN([TL_AC_GXX_INCLUDE_DIR], 10 [ 11 case "${with_gxx_include_dir}" in 12 yes) 13 AC_MSG_ERROR([--with-gxx-include-dir=[[dir]] requires a directory]) 14 ;; 15 no | "") 16 case "${enable_version_specific_runtime_libs}" in 17 yes) gxx_include_dir='$(libsubdir)/include/c++' ;; 18 *) 19 libstdcxx_incdir='c++/$(gcc_version)' 20 gxx_include_dir='include/$(libstdcxx_incdir)' 21 if test -n "$with_cross_host" && 22 test x"$with_cross_host" != x"no"; then 23 gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir" 24 else 25 gxx_include_dir='${prefix}/'"$gxx_include_dir" 26 fi;; 27 esac ;; 28 *) gxx_include_dir=${with_gxx_include_dir} ;; 29 esac 30 AC_SUBST(gxx_include_dir) 31 AC_SUBST(libstdcxx_incdir) 32 ]) 33
