Hello: I am trying to write some Jamfiles and I am finding that bjam tends to run my rules twice. Here is a tiny demo (using Boost 1.31.1 on Windows XP, with zsh/cygwin, bjam version "3.1.13. OS=NT".). % export BOOST_ROOT=c:/boost_1_33_1; cd c:/; rm -rf deleteme; mkdir deleteme; cd deleteme; echo 'Echo Hello Twice ;' > Jamfile; bjam Hello Twice Hello Twice ...found 8 targets... (Note: If the first statement is "export BOOST_ROOT=;" instead, I get the error "Unable to load Boost.Build: could not find "boost-build.jam...Attempted search from c:\deleteme up to the root...etc.") Notice the double-execution. Here is some potentially useful extra information. I ran it with -d5, and noticed that 'Echo Hello Twice ;' was getting executed at lines 1785 and 1797 of allyourbase.jam. Here is a snippet of the -d5 output: ---------------------------------------------------------output with -d5---------------------------------------------------------- <snip> c:\boost_1_33_1\tools/build/v1\allyourbase.jam:1784:>>>>|> set gINCLUDED_AS_DEPENDANT(Jamfile) = TRUE c:\boost_1_33_1\tools/build/v1\allyourbase.jam:1785:>>>>|> include Jamfile Jamfile:1:>>>>|> Echo Hello Twice Hello Twice c:\boost_1_33_1\tools/build/v1\allyourbase.jam:1791:>>>>|> set gIN_LIB_INCLUDE = c:\boost_1_33_1\tools/build/v1\allyourbase.jam:1796:>>>>|> set gINCLUDED(Jamfile) = TRUE c:\boost_1_33_1\tools/build/v1\allyourbase.jam:1797:>>>>|> include Jamfile Jamfile:1:>>>>|> Echo Hello Twice Hello Twice make -- all make -- all <snip> --------------------------------------------------------end output with -d5------------------------------------------------------ The file allyourbase.jam is too big for this email, but I'm including the relevant snippet here, with key lines marked with "<<<<<" : ------------------------------------------------------allyourbase.jam--- --------------------------------------------- <snip> # Load a user's Jamfile(s). # rule load-jamfiles ( jamfiles * ) { # First we load the Jamfiles without generation of main targets so that # dependencies are preloaded. Then we reload the files with target # generation enabled. local jamfile ; local as-dependant = $(gIN_LIB_INCLUDE) ; local gIN_LIB_INCLUDE ; gIN_LIB_INCLUDE = TRUE ; for jamfile-path in $(jamfiles) { if ! $(gINCLUDED_AS_DEPENDANT($(jamfile-path))) { gINCLUDED_AS_DEPENDANT($(jamfile-path)) = TRUE ; include $(jamfile-path) ; <<<<< line 1785 } } if ! $(as-dependant) { gIN_LIB_INCLUDE = ; for jamfile-path in $(jamfiles) { if ! $(gINCLUDED($(jamfile-path))) { gINCLUDED($(jamfile-path)) = TRUE ; include $(jamfile-path) ; <<<<< line 1797 } } } } <snip> ------------------------------------------------------end allyourbase.jam------------------------------------------------ Can anyone reproduce and/or explain this? Thank you. Michael Drumheller Boeing Phantom Works Mathematics and Engineering Analysis 425.373.2703 michael.drumheller@boeing.com This email may contain proprietary information. If you are not the intended recipient please delete it and notify the sender that you received it in error.