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Conditionally link with Boost.Regex library, if it's in C++03 mode.
Boost.Log supports compilers that do not qualify as C++11 compilers for Boost.Regex, even if they are compiling in C++11 mode. In that case, we still need to link with Boost.Regex v4 prebuilt library. For more recent compilers, Boost.Regex v5 is used, and that is a header-only library. This commit removes linking with Boost.Regex when this is detected at configure time. Note that only Boost.Build is updated. CMake doesn't need to be updated since even header-only libraries need to be listed as dependencies. Closes #219.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| # log-build-config.jam | ||
| # | ||
| # Copyright 2023 Andrey Semashev | ||
| # | ||
| # Distributed under the Boost Software License Version 1.0. (See | ||
| # accompanying file LICENSE_1_0.txt or copy at | ||
| # http://www.boost.org/LICENSE_1_0.txt) | ||
|
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| import configure ; | ||
| import project ; | ||
| import path ; | ||
| import property ; | ||
| import feature ; | ||
|
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| local here = [ modules.binding $(__name__) ] ; | ||
|
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| project.push-current [ project.current ] ; | ||
| project.load [ path.join [ path.make $(here:D) ] ../config/message-compiler ] ; | ||
| project.load [ path.join [ path.make $(here:D) ] ../config/pthread-mutex-robust ] ; | ||
| project.load [ path.join [ path.make $(here:D) ] ../config/native-syslog ] ; | ||
| project.load [ path.join [ path.make $(here:D) ] ../config/atomic-int32 ] ; | ||
| project.load [ path.join [ path.make $(here:D) ] ../config/regex-header-only ] ; | ||
| project.pop-current ; | ||
|
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| rule has-config-flag ( flag : properties * ) | ||
| { | ||
| if ( "<define>$(flag)" in $(properties) || "<define>$(flag)=1" in $(properties) ) | ||
| { | ||
| return 1 ; | ||
| } | ||
| else | ||
| { | ||
| return ; | ||
| } | ||
| } | ||
|
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| rule check-regex-header-only ( properties * ) | ||
| { | ||
| local result ; | ||
|
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| local has_regex_header_only = [ configure.builds /boost/log/regex-header-only//regex_header_only : $(properties) : "Boost.Regex is header-only" ] ; | ||
| if ! $(has_regex_header_only) | ||
| { | ||
| result = <library>/boost/regex//boost_regex ; | ||
| } | ||
|
|
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| return $(result) ; | ||
| } | ||
|
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| rule check-atomic-int32 ( properties * ) | ||
| { | ||
| local result ; | ||
|
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| local has_atomic_int32 = [ configure.builds /boost/log/atomic-int32//atomic_int32 : $(properties) : "native atomic int32 supported" ] ; | ||
| if ! $(has_atomic_int32) | ||
| { | ||
| result = <define>BOOST_LOG_WITHOUT_IPC ; | ||
| } | ||
|
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| return $(result) ; | ||
| } | ||
|
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| rule check-pthread-mutex-robust ( properties * ) | ||
| { | ||
| local result ; | ||
|
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| local has_pthread_mutex_robust = [ configure.builds /boost/log/pthread-mutex-robust//pthread_mutex_robust : $(properties) : "pthread supports robust mutexes" ] ; | ||
| if $(has_pthread_mutex_robust) | ||
| { | ||
| result = <define>BOOST_LOG_HAS_PTHREAD_MUTEX_ROBUST ; | ||
| } | ||
|
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| return $(result) ; | ||
| } | ||
|
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| rule check-native-syslog ( properties * ) | ||
| { | ||
| local result ; | ||
|
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| if ! [ has-config-flag BOOST_LOG_WITHOUT_SYSLOG : $(properties) ] | ||
| { | ||
| local has_native_syslog = [ configure.builds /boost/log/native-syslog//native_syslog : $(properties) : "native syslog supported" ] ; | ||
| if $(has_native_syslog) | ||
| { | ||
| result = <define>BOOST_LOG_USE_NATIVE_SYSLOG ; | ||
| } | ||
| } | ||
|
|
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| return $(result) ; | ||
| } | ||
|
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| rule check-message-compiler ( properties * ) | ||
| { | ||
| local result ; | ||
|
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| if <target-os>windows in $(properties) | ||
| { | ||
| if ! [ has-config-flag BOOST_LOG_WITHOUT_EVENT_LOG : $(properties) ] | ||
| { | ||
| local has_mc = [ configure.builds /boost/log/message-compiler//test-availability : $(properties) : "has message compiler" ] ; | ||
| if ! $(has_mc) | ||
| { | ||
| result = <define>BOOST_LOG_WITHOUT_EVENT_LOG ; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| # This branch is needed to fix building with MinGW | ||
| result = <define>BOOST_LOG_WITHOUT_EVENT_LOG ; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| result = <define>BOOST_LOG_WITHOUT_EVENT_LOG ; | ||
| } | ||
|
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| return $(result) ; | ||
| } | ||
|
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| rule select-regex-backend ( properties * ) | ||
| { | ||
| local result ; | ||
|
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| # Use Boost.Regex backend by default. It produces smaller executables and also has the best performance for small string matching. | ||
| if ! ( | ||
| [ log-build-config.has-config-flag BOOST_LOG_WITHOUT_SETTINGS_PARSERS : $(properties) ] || | ||
| [ log-build-config.has-config-flag BOOST_LOG_WITHOUT_DEFAULT_FACTORIES : $(properties) ] || | ||
| [ log-build-config.has-config-flag BOOST_LOG_USE_STD_REGEX : $(properties) ] || | ||
| [ log-build-config.has-config-flag BOOST_LOG_USE_BOOST_XPRESSIVE : $(properties) ] ) | ||
| { | ||
| result = <conditional>@log-build-config.check-regex-header-only ; | ||
| } | ||
|
|
||
| return $(result) ; | ||
| } |
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