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PR gold/14309

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* configure.ac: Test whether std::tr1::hash<off_t> works.
	* gold.h: Add a specialization for std::tr1::hash<off_t> if
	needed.
	* output.h (class Output_fill): Add virtual destructor.
	* configure, config.in: Rebuild.
This commit is contained in:
Ian Lance Taylor
2012-07-10 14:54:29 +00:00
parent 686f09d021
commit 81c82a68dc
6 changed files with 85 additions and 0 deletions
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19
gold/configure.ac
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@@ -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.