id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
12477,[math] error: while reading precompiled header: No such file or directory,jackie.huang@…,Vladimir Prus,"Compilation of boost 1.61.1 with GCC 6.2.0 compiler sometimes fail (35%: 7 failure out of 20 builds, with ""-j64"") with many erros like:

-----------
libs/math/build/../src/tr1/assoc_legendre.cpp:6:21: error: while reading precompiled header: No such file or directory
 #  include <pch.hpp>
                     ^
libs/math/build/../src/tr1/cyl_bessel_j.cpp:6:21: error: while reading precompiled header: No such file or directory
 #  include <pch.hpp>
                     ^
--------------

It seems to be a race condition in parallel compiling.


And I also observed many warnings like:

--------------
libs/math/build/../src/tr1/cyl_bessel_i.cpp:6:21: warning: /ala-lpggp51/jhuang0/builds/p90_i64-sato_160920/bitbake_build/tmp/work/corei7-64-wrs-linux/boost/1.61.0-r0/boost_1_61_0/x86_64-wrs-linux/boost/bin.v2/libs/math/build/69ffc88faf507005827aa061bd65b9bd/../src/tr1/pch.hpp.gch: created and used with different settings of -fpic
libs/math/build/../src/tr1/cyl_bessel_jf.cpp:6:21: warning: /ala-lpggp51/jhuang0/builds/p90_i64-sato_160920/bitbake_build/tmp/work/corei7-64-wrs-linux/boost/1.61.0-r0/boost_1_61_0/x86_64-wrs-linux/boost/bin.v2/libs/math/build/69ffc88faf507005827aa061bd65b9bd/../src/tr1/pch.hpp.gch: created and used with different settings of -fpic
libs/math/build/../src/tr1/cyl_neumannf.cpp:6:21: warning: /ala-lpggp51/jhuang0/builds/p90_i64-sato_160920/bitbake_build/tmp/work/corei7-64-wrs-linux/boost/1.61.0-r0/boost_1_61_0/x86_64-wrs-linux/boost/bin.v2/libs/math/build/69ffc88faf507005827aa061bd65b9bd/../src/tr1/pch.hpp.gch: created and used with different settings of -fpic
----------------
libs/math/build/../src/tr1/assoc_legendre.cpp:6:21: warning: /ala-lpggp51/jhuang0/builds/p90_i64-sato_160920/bitbake_build/tmp/work/corei7-64-wrs-linux/boost/1.61.0-r0/boost_1_61_0/x86_64-wrs-linux/boost/bin.v2/libs/math/build/69ffc88faf507005827aa061bd65b9bd/../src/tr1/pch.hpp.gch: not used because `__LDBL_MAX_EX' not defined [-Winvalid-pch]
 #  include <pch.hpp>
                     ^
libs/math/build/../src/tr1/sph_legendre.cpp:6:21: warning: /ala-lpggp51/jhuang0/builds/p90_i64-sato_160920/bitbake_build/tmp/work/corei7-64-wrs-linux/boost/1.61.0-r0/boost_1_61_0/x86_64-wrs-linux/boost/bin.v2/libs/math/build/69ffc88faf507005827aa061bd65b9bd/../src/tr1/pch.hpp.gch: not used because `__LDBL_MAX_EX' not defined [-Winvalid-pch]
 #  include <pch.hpp>
                     ^
-----------------

BTW, my builds are based on yocto project.


",Bugs,new,To Be Determined,build,Boost 1.61.0,Problem,,pch,