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d4517b98cd
When build statically, boost is unable to detect lock-free atomics ints
because it tries to link dynamically, see
output/build/boost-1.67.0/bin.v2/config.log (with -d5 option):
Using shell: /bin/sh -c
argv[0] = '/bin/sh'
argv[1] = '-c'
argv[2] = '
"/home/fabrice/buildroot/output/host/bin/arm-linux-g++" -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -Wl,-elf2flt -static -Wl,-elf2flt -static -fPIC -pthread -O0 -fno-inline -Wall -pedantic -g -Wextra -Wno-long-long -Wno-unused-parameter -Wunused-function -pedantic -DBOOST_ALL_NO_LIB=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_THREAD_BUILD_DLL=1 -I"." -c -o "bin.v2/libs/thread/build/gcc-6.4.0/debug/threading-multi/has_atomic_flag_lockfree_test.o" "libs/thread/src/../build/has_atomic_flag_lockfree_test.cpp"
'
gcc.compile.c++ bin.v2/libs/thread/build/gcc-6.4.0/debug/threading-multi/has_atomic_flag_lockfree_test.o
"/home/fabrice/buildroot/output/host/bin/arm-linux-g++" -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -Wl,-elf2flt -static -Wl,-elf2flt -static -fPIC -pthread -O0 -fno-inline -Wall -pedantic -g -Wextra -Wno-long-long -Wno-unused-parameter -Wunused-function -pedantic -DBOOST_ALL_NO_LIB=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_THREAD_BUILD_DLL=1 -I"." -c -o "bin.v2/libs/thread/build/gcc-6.4.0/debug/threading-multi/has_atomic_flag_lockfree_test.o" "libs/thread/src/../build/has_atomic_flag_lockfree_test.cpp"
0.033561 sec system; 0.126314 sec user; 288.682473 sec clock
gcc.compile.c++ bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/error_code.o
"/home/fabrice/buildroot/output/host/bin/arm-linux-g++" -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -Wl,-elf2flt -static -Wl,-elf2flt -static -fPIC -pthread -O0 -fno-inline -Wall -pedantic -g -DBOOST_ALL_NO_LIB=1 -DBOOST_SYSTEM_DYN_LINK=1 -I"." -c -o "bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/error_code.o" "libs/system/src/error_code.cpp"
0.084060 sec system; 0.644133 sec user; 8.858824 sec clock
SEM: <s>gcc-link-semaphore now used by <pbin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi>libboost_system.so.1.67.0
Using shell: /bin/sh -c
argv[0] = '/bin/sh'
argv[1] = '-c'
argv[2] = '
"/home/fabrice/buildroot/output/host/bin/arm-linux-g++" -o "bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/libboost_system.so.1.67.0" -Wl,-h -Wl,libboost_system.so.1.67.0 -shared -Wl,--start-group "bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/error_code.o" -Wl,-Bstatic -Wl,-Bdynamic -lrt -Wl,--end-group -fPIC -pthread -g -Wl,-elf2flt -static
'
gcc.link.dll bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/libboost_system.so.1.67.0
"/home/fabrice/buildroot/output/host/bin/arm-linux-g++" -o "bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/libboost_system.so.1.67.0" -Wl,-h -Wl,libboost_system.so.1.67.0 -shared -Wl,--start-group "bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/error_code.o" -Wl,-Bstatic -Wl,-Bdynamic -lrt -Wl,--end-group -fPIC -pthread -g -Wl,-elf2flt -static
ld (ld-elf2flt): -shared used without passing a shared library ID
collect2: error: ld a retourné le statut de sortie 1
0.003123 sec system; 0.004732 sec user; 15.646509 sec clock
...failed gcc.link.dll bin.v2/libs/system/build/gcc-6.4.0/debug/threading-multi/libboost_system.so.1.67.0...
Due to this wrong detection, boost_atomic is wrongly selected by
boost_thread which cause a build failure on missing select
To fix this, move the exe statement before the boost/thread project
Fixes:
- http://autobuild.buildroot.org/results/f46d38991385cbc2a4fa14eb31074e770cd79803
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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