[Boost-build] Target is always rebuild when referenced resource is newer then the rc file

Subject: [Boost-build] Target is always rebuild when referenced resource is newer then the rc file
From: Pavel Machyniak (machyniak_at_[hidden])
Date: 2012-06-22 10:40:11

Hi,

when compiling resource `rc` file (msvc toolset), dependent target is
always rebuild when referenced resource file is newer then the `rc` file
itself.

Working example is attached. Change the modification time of the
`test.ico` file to current. And try to build the project repeatedly.
After first normal build, it is always rebuilt.

>From the diagnostic output:
bjam.exe -d+3
...
make    --      <pbin\msvc-10\debug\threading-multi>test_res.obj
make    --      <pbin\msvc-10\debug\threading-multi>test_res.obj
bind    --      <pbin\msvc-10\debug\threading-multi>test_res.obj:
bin\msvc-10\debug\threading-multi\test_res.obj
time    --      <pbin\msvc-10\debug\threading-multi>test_res.obj: Fri
Jun 22 17:08:19 2012
make    --       <p.-object(res-scanner)@62>test.rc
make    --       <p.-object(res-scanner)@62>test.rc
bind    --       <p.-object(res-scanner)@62>test.rc: test.rc
time    --       <p.-object(res-scanner)@62>test.rc: Fri Jun 22 17:06:57
2012
make    --        <p.>test.rc
make    --        <p.>test.rc
bind    --        <p.>test.rc: test.rc
time    --        <p.>test.rc: Fri Jun 22 17:06:57 2012
made    stable        <p.>test.rc
make    --        <object(res-scanner)@62#.>test.ico
make    --        <object(res-scanner)@62#.>test.ico
bind    --        <object(res-scanner)@62#.>test.ico: test.ico
time    --        <object(res-scanner)@62#.>test.ico: Fri Jun 22
17:07:28 2012
made*    newer        <object(res-scanner)@62#.>test.ico
make    --        <p.-object(res-scanner)@62>test.rc
make    --        <p.-object(res-scanner)@62>test.rc
time    --        <p.-object(res-scanner)@62>test.rc: unbound
made+    old       <p.-object(res-scanner)@62>test.rc
made+    update      <pbin\msvc-10\debug\threading-multi>test_res.obj
...

Best Regards,
Pavel Machyniak