Date: Fri, 10 May 2013 16:28:00 -0400 From: "Mikhail T." <mi+thun@aldan.algebra.com> To: Baptiste Daroussin <bapt@FreeBSD.org>, office@freebsd.org Subject: boost-libs and CXXFLAGS (Re: devel/boost-bjam) Message-ID: <518D5850.4020802@aldan.algebra.com> In-Reply-To: <20130502222115.GL79495@ithaqua.etoilebsd.net> References: <517ABC7F.6040807@aldan.algebra.com> <518066A5.6090601@aldan.algebra.com> <20130501181311.GW3577@ithaqua.etoilebsd.net> <5181885A.1030501@aldan.algebra.com> <20130502210136.GG79495@ithaqua.etoilebsd.net> <5182D5C9.4000004@aldan.algebra.com> <20130502215048.GI79495@ithaqua.etoilebsd.net> <5182E531.8050109@aldan.algebra.com> <20130502222115.GL79495@ithaqua.etoilebsd.net>
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On 02.05.2013 18:21, Baptiste Daroussin wrote:
> Thanks you your investigation and tests, I'm expecting for your commit then.
Though boost-libs are now built with the specified compiler, the compiler flags
continue to be ignored. I don't necessarily mind the optimization level raised
from -O2, that I specify, to -O3 that boost prefers, but I am also setting
-march=native on my systems and this is getting dropped. For example:
g++47 -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread
-fPIC -DBOOST_ALL_NO_LIB=1 -DBOOST_CHRONO_DYN_LINK=1
-DBOOST_LOCALE_DYN_LINK=1 -DBOOST_LOCALE_NO_POSIX_BACKEND=1
-DBOOST_LOCALE_NO_WINAPI_BACKEND=1 -DBOOST_LOCALE_WITH_ICONV=1
-DBOOST_LOCALE_WITH_ICU=1 -DBOOST_SYSTEM_DYN_LINK=1
-DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_THREAD_BUILD_DLL=1
-DBOOST_THREAD_NO_LIB=1 -DBOOST_THREAD_POSIX
-DBOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED -DBOOST_THREAD_USE_DLL=1
-DNDEBUG -I. -I/opt/include -c -o
bin.v2/libs/locale/build/gcc-4.7.4/release/threading-multi/shared/message.o
libs/locale/src/shared/message.cpp
Without the -march flag, the compiler is forced to assume, the generated code
must work even on i386, and can not take advantage of the MMX and the SSE
instructions available on modern CPUs...
Can anything be done about this? Thanks! Yours,
-mi
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