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Make glog ABI compatible with gflags

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The ABI incompatibility is bad when 

- Build glog without gflags (glog package in most distributions doesn't 
  depend on gflags) 
- Use both glog and gflags 


git-svn-id: https://google-glog.googlecode.com/svn/trunk@125 eb4d4688-79bd-11dd-afb4-1d65580434c0
This commit is contained in:
2013-01-25 05:44:43 +00:00
parent 3b59339f08
commit c4c25e85fd
3 changed files with 51 additions and 50 deletions
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53
src/base/commandlineflags.h
View File

@ -61,43 +61,44 @@
#include "glog/logging.h"
#define DECLARE_VARIABLE(type, name, tn) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead { \
extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead::FLAGS_##name
#define DEFINE_VARIABLE(type, name, value, meaning, tn) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead { \
GOOGLE_GLOG_DLL_DECL type FLAGS_##name(value); \
char FLAGS_no##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead::FLAGS_##name
#define DECLARE_VARIABLE(type, shorttype, name, tn) \
namespace fL##shorttype { \
extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
} \
using fL##shorttype::FLAGS_##name
#define DEFINE_VARIABLE(type, shorttype, name, value, meaning, tn) \
namespace fL##shorttype { \
GOOGLE_GLOG_DLL_DECL type FLAGS_##name(value); \
char FLAGS_no##name; \
} \
using fL##shorttype::FLAGS_##name
// bool specialization
#define DECLARE_bool(name) \
DECLARE_VARIABLE(bool, name, bool)
DECLARE_VARIABLE(bool, B, name, bool)
#define DEFINE_bool(name, value, meaning) \
DEFINE_VARIABLE(bool, name, value, meaning, bool)
DEFINE_VARIABLE(bool, B, name, value, meaning, bool)
// int32 specialization
#define DECLARE_int32(name) \
DECLARE_VARIABLE(GOOGLE_NAMESPACE::int32, name, int32)
DECLARE_VARIABLE(GOOGLE_NAMESPACE::int32, I, name, int32)
#define DEFINE_int32(name, value, meaning) \
DEFINE_VARIABLE(GOOGLE_NAMESPACE::int32, name, value, meaning, int32)
DEFINE_VARIABLE(GOOGLE_NAMESPACE::int32, I, name, value, meaning, int32)
// Special case for string, because we have to specify the namespace
// std::string, which doesn't play nicely with our FLAG__namespace hackery.
#define DECLARE_string(name) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead { \
extern GOOGLE_GLOG_DLL_DECL std::string FLAGS_##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead::FLAGS_##name
#define DEFINE_string(name, value, meaning) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead { \
GOOGLE_GLOG_DLL_DECL std::string FLAGS_##name(value); \
char FLAGS_no##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead::FLAGS_##name
#define DECLARE_string(name) \
namespace fLS { \
extern GOOGLE_GLOG_DLL_DECL std::string& FLAGS_##name; \
} \
using fLS::FLAGS_##name
#define DEFINE_string(name, value, meaning) \
namespace fLS { \
std::string FLAGS_##name##_buf(value); \
GOOGLE_GLOG_DLL_DECL std::string& FLAGS_##name = FLAGS_##name##_buf; \
char FLAGS_no##name; \
} \
using fLS::FLAGS_##name
#endif // HAVE_LIB_GFLAGS

24
src/glog/logging.h.in
View File

@ -293,27 +293,27 @@ typedef unsigned __int64 uint64;
#ifndef DECLARE_VARIABLE
#define MUST_UNDEF_GFLAGS_DECLARE_MACROS
#define DECLARE_VARIABLE(type, name, tn) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead { \
extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead::FLAGS_##name
#define DECLARE_VARIABLE(type, shorttype, name, tn) \
namespace fL##shorttype { \
extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
} \
using fL##shorttype::FLAGS_##name
// bool specialization
#define DECLARE_bool(name) \
DECLARE_VARIABLE(bool, name, bool)
DECLARE_VARIABLE(bool, B, name, bool)
// int32 specialization
#define DECLARE_int32(name) \
DECLARE_VARIABLE(@ac_google_namespace@::int32, name, int32)
DECLARE_VARIABLE(@ac_google_namespace@::int32, I, name, int32)
// Special case for string, because we have to specify the namespace
// std::string, which doesn't play nicely with our FLAG__namespace hackery.
#define DECLARE_string(name) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead { \
extern GOOGLE_GLOG_DLL_DECL std::string FLAGS_##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead::FLAGS_##name
#define DECLARE_string(name) \
namespace fLS { \
extern GOOGLE_GLOG_DLL_DECL std::string& FLAGS_##name; \
} \
using fLS::FLAGS_##name
#endif
// Set whether log messages go to stderr instead of logfiles

24
src/windows/glog/logging.h
View File

@ -297,27 +297,27 @@ typedef unsigned __int64 uint64;
#ifndef DECLARE_VARIABLE
#define MUST_UNDEF_GFLAGS_DECLARE_MACROS
#define DECLARE_VARIABLE(type, name, tn) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead { \
extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_##tn##_instead::FLAGS_##name
#define DECLARE_VARIABLE(type, shorttype, name, tn) \
namespace fL##shorttype { \
extern GOOGLE_GLOG_DLL_DECL type FLAGS_##name; \
} \
using fL##shorttype::FLAGS_##name
// bool specialization
#define DECLARE_bool(name) \
DECLARE_VARIABLE(bool, name, bool)
DECLARE_VARIABLE(bool, B, name, bool)
// int32 specialization
#define DECLARE_int32(name) \
DECLARE_VARIABLE(google::int32, name, int32)
DECLARE_VARIABLE(google::int32, I, name, int32)
// Special case for string, because we have to specify the namespace
// std::string, which doesn't play nicely with our FLAG__namespace hackery.
#define DECLARE_string(name) \
namespace FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead { \
extern GOOGLE_GLOG_DLL_DECL std::string FLAGS_##name; \
} \
using FLAG__namespace_do_not_use_directly_use_DECLARE_string_instead::FLAGS_##name
#define DECLARE_string(name) \
namespace fLS { \
extern GOOGLE_GLOG_DLL_DECL std::string& FLAGS_##name; \
} \
using fLS::FLAGS_##name
#endif
// Set whether log messages go to stderr instead of logfiles