diff options
Diffstat (limited to 'gold/configure.ac')
| -rw-r--r-- | gold/configure.ac | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gold/configure.ac b/gold/configure.ac index fdea6291ed..5e3dc0601c 100644 --- a/gold/configure.ac +++ b/gold/configure.ac @@ -515,6 +515,25 @@ if test "$gold_cv_unordered_map_rehash" = "yes"; then [Define if ::std::tr1::unordered_map::rehash is usable]) fi +# Use of tr1/unordered_map with off_t as a key is not supported on GCC +# 4.1.xx when compiling in 32-bit mode with a 64-bit off_t type. +AC_CACHE_CHECK([whether std::tr1::hash<off_t> is defined], +[gold_cv_hash_off_t], +[CXXFLAGS_hold=$CXXFLAGS +CXXFLAGS="$CXXFLAGS $LFS_CFLAGS" +AC_COMPILE_IFELSE([ +#include <sys/types.h> +#include <tr1/unordered_map> +std::tr1::hash<off_t> h; +], +[gold_cv_hash_off_t=yes], +[gold_cv_hash_off_t=no]) +CXXFLAGS=$CFLAGS_hold]) +if test "$gold_cv_hash_off_t" = "yes"; then + AC_DEFINE(HAVE_TR1_HASH_OFF_T, 1, + [Define if std::tr1::hash<off_t> is usable]) +fi + # gcc 4.3.0 doesn't recognize the printf attribute on a template # function. Check for that. This is gcc bug 35546. This test can # probably be removed after the bug has been fixed for a while. |
