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https://github.com/gperftools/gperftools
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c437e1fcdd
* google-perftools: version 0.92 release * PERFORMANCE: use a packed cache to speed up tcmalloc * PORTING: preliminary windows support! (see README.windows) * PORTING: better support for solaris, OS X, FreeBSD (see INSTALL) * Envvar support for running the heap-checker under gdb * Add weak declarations to maybe_threads to fix no-pthreads compile bugs * Some 64bit fixes, especially with pprof * Better heap-checker support for some low-level allocations * Fix bug where heap-profiles would sometimes get truncated * New documentation about how to handle common heap leak situations * Use computed includes for hash_map/set: easier config * Added all used .m4 templates to the distribution git-svn-id: http://gperftools.googlecode.com/svn/trunk@36 6b5cf1ce-ec42-a296-1ba9-69fdba395a50
45 lines
1.9 KiB
Plaintext
45 lines
1.9 KiB
Plaintext
# We check two things: where the include file is for hash_map, and
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# what namespace hash_map lives in within that include file. We
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# include AC_TRY_COMPILE for all the combinations we've seen in the
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# wild. We define one of HAVE_HASH_MAP or HAVE_EXT_HASH_MAP depending
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# on location, and HASH_NAMESPACE to be the namespace hash_map is
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# defined in.
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#
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# Ideally we'd use AC_CACHE_CHECK, but that only lets us store one value
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# at a time, and we need to store two (filename and namespace).
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# prints messages itself, so we have to do the message-printing ourselves
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# via AC_MSG_CHECKING + AC_MSG_RESULT. (TODO(csilvers): can we cache?)
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AC_DEFUN([AC_CXX_STL_HASH],
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[AC_REQUIRE([AC_CXX_NAMESPACES])
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AC_MSG_CHECKING(the location of hash_map)
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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ac_cv_cxx_hash_map=""
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for location in ext/hash_map hash_map; do
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for namespace in __gnu_cxx "" std stdext; do
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if test -z "$ac_cv_cxx_hash_map"; then
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AC_TRY_COMPILE([#include <$location>],
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[${namespace}::hash_map<int, int> t],
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[ac_cv_cxx_hash_map="<$location>";
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ac_cv_cxx_hash_namespace="$namespace";])
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fi
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done
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done
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ac_cv_cxx_hash_set=`echo "$ac_cv_cxx_hash_map" | sed s/map/set/`;
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if test -n "$ac_cv_cxx_hash_map"; then
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AC_DEFINE(HAVE_HASH_MAP, 1, [define if the compiler has hash_map])
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AC_DEFINE(HAVE_HASH_SET, 1, [define if the compiler has hash_set])
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AC_DEFINE_UNQUOTED(HASH_MAP_H,$ac_cv_cxx_hash_map,
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[the location of <hash_map>])
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AC_DEFINE_UNQUOTED(HASH_SET_H,$ac_cv_cxx_hash_set,
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[the location of <hash_set>])
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AC_DEFINE_UNQUOTED(HASH_NAMESPACE,$ac_cv_cxx_hash_namespace,
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[the namespace of hash_map/hash_set])
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AC_MSG_RESULT([$ac_cv_cxx_hash_map])
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else
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AC_MSG_RESULT()
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AC_MSG_WARN([could not find an STL hash_map])
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fi
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])
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