Opened 6 years ago

Last modified 5 years ago

#7101 new Bugs

b2 defines multiple isysroot on Mac OSX 10.6 when targeting SDK versions earlier than 10.6

Reported by: mikko.vainio@… Owned by: Vladimir Prus
Milestone: To Be Determined Component: build
Version: Boost 1.50.0 Severity: Problem
Keywords: Cc: paleozogt@…


Building Boost 1.50.0 on Mac OSX 10.6 included multiple SDK versions when targeting SDK versions 10.5 adn/or 10.4;

./b2 toolset=darwin link=static threading=multi stage --with-program_options architecture=combined macosx-version=10.5 macosx-version-min=10.5 -d3


"g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -gdwarf-2 -fexceptions -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 -isysroot /Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5 -arch i386 -arch ppc -DBOOST_ALL_NO_LIB=1 -DNDEBUG -I"." -c -o "bin.v2/libs/program_options/build/darwin-4.2.1/release/architecture-combined/link-static/macosx-version-min-10.5/macosx-version-10.5/threading-multi/cmdline.o" "libs/program_options/src/cmdline.cpp"

and targeting 10.4 SDK

./b2 toolset=darwin link=static threading=multi stage --with-program_options architecture=combined macosx-version=10.4 macosx-version-min=10.4 -d3


"g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -gdwarf-2 -fexceptions -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4 -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.4 -isysroot /Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.4 -arch i386 -arch ppc -DBOOST_ALL_NO_LIB=1 -DNDEBUG -I"." -c -o "bin.v2/libs/program_options/build/darwin-4.2.1/release/architecture-combined/link-static/macosx-version-min-10.4/macosx-version-10.4/threading-multi/cmdline.o" "libs/program_options/src/cmdline.cpp"

that is, isysroot is defined multiple times. That apparently causes the latest SDK to be used, which leads to linker errors when a project built against an earlier SDK tries to link Boost.

A quick workaround is to hide the later SDK from b2:

sudo mv /Developer/SDKs/MacOSX10.6.sdk /Developer/SDKs/bak.MacOSX10.6.sdk

then run b2 as usual, and finally revert the renaming of the SDK

sudo mv /Developer/SDKs/bak.MacOSX10.6.sdk /Developer/SDKs/MacOSX10.6.sdk

Change History (1)

comment:1 Changed 5 years ago by Aaron Simmons <paleozogt@…>

Cc: paleozogt@… added

This is happening for me as well with boost v1.52.0

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