Any chance you can file this on SCons's github repo? On Mon, Feb 1, 2021 at 10:39 AM Robert Luberda <rob...@debian.org> wrote:
> Package: scons > Version: 4.0.1+dfsg-2 > Severity: normal > Tags: upstream > > Hi, > > I'm attaching a simple test project that: > - contains hello2.c file that is symbolic link to hello.c file; > - and sets 'MD5-timestamp' as the decider function. > > Previously (what I'm proving at the bottom of this mail) scons used > to build hello2 when hello.c was changed. In the current version of > scons only hello gets rebuilt. > > # Initial compilation with scons 4: > robert@vox:/tmp/proj$ scons --debug=explain > scons: Reading SConscript files ... > scons: done reading SConscript files. > scons: Building targets ... > scons: building `hello.o' because it doesn't exist > gcc -o hello.o -c hello.c > scons: building `hello' because it doesn't exist > gcc -o hello hello.o > scons: building `hello2.o' because it doesn't exist > gcc -o hello2.o -c hello2.c > scons: building `hello2' because it doesn't exist > gcc -o hello2 hello2.o > scons: done building targets. > > # The following command changes both hello.c and hello2.c... > robert@vox:/tmp/proj$ sed -i -e 's/word/WoRd/i' hello.c > > # ... but hello2.c is not rebuilt: > robert@vox:/tmp/proj$ scons --debug=explain > scons: Reading SConscript files ... > scons: done reading SConscript files. > scons: Building targets ... > scons: rebuilding `hello.o' because: > `hello.c' changed > `/usr/bin/gcc' changed > gcc -o hello.o -c hello.c > scons: rebuilding `hello' because: > `hello.o' changed > `/usr/bin/gcc' changed > gcc -o hello hello.o > scons: done building targets. > > robert@vox:/tmp/proj$ scons -v > SCons by Steven Knight et al.: > SCons: v4.0.1.c289977f8b34786ab6c334311e232886da7e8df1, 2020-07-17 > 01:50:03, by bdbaddog on ProDog2020 > SCons path: ['/usr/lib/python3/dist-packages/SCons'] > Copyright (c) 2001 - 2020 The SCons Foundation > > > > After downgrading scons to 3.1.2+dfsg-0.1, it works as I would expect: > > # Initial compilation with scons 3: > robert@vox:/tmp/proj$ scons --debug=explain > scons: Reading SConscript files ... > scons: done reading SConscript files. > scons: Building targets ... > scons: building `hello.o' because it doesn't exist > gcc -o hello.o -c hello.c > scons: building `hello' because it doesn't exist > gcc -o hello hello.o > scons: building `hello2.o' because it doesn't exist > gcc -o hello2.o -c hello2.c > scons: building `hello2' because it doesn't exist > gcc -o hello2 hello2.o > scons: done building targets. > > # Still both files are changed by the following command: > robert@vox:/tmp/proj$ sed -i -e 's/word/WORd/i' hello.c > # ... and both are rebuilt: > robert@vox:/tmp/proj$ scons --debug=explain > scons: Reading SConscript files ... > scons: done reading SConscript files. > scons: Building targets ... > scons: rebuilding `hello.o' because: > `hello.c' changed > `/usr/bin/gcc' changed > gcc -o hello.o -c hello.c > scons: rebuilding `hello' because: > `hello.o' changed > `/usr/bin/gcc' changed > gcc -o hello hello.o > scons: rebuilding `hello2.o' because: > `hello2.c' changed > `/usr/bin/gcc' changed > gcc -o hello2.o -c hello2.c > scons: rebuilding `hello2' because: > `hello2.o' changed > `/usr/bin/gcc' changed > gcc -o hello2 hello2.o > scons: done building targets. > > robert@vox:/tmp/proj$ scons -v > SCons by Steven Knight et al.: > script: v3.1.2.bee7caf9defd6e108fc2998a2520ddb36a967691, > 2019-12-17 02:07:09, by bdeegan on octodog > engine: v3.1.2.bee7caf9defd6e108fc2998a2520ddb36a967691, > 2019-12-17 02:07:09, by bdeegan on octodog > engine path: ['/usr/lib/scons/SCons'] > Copyright (c) 2001 - 2019 The SCons Foundation > > > Regards, > robert > > > -- System Information: > Debian Release: bullseye/sid > APT prefers unstable-debug > APT policy: (990, 'unstable-debug'), (990, 'unstable'), (990, > 'testing'), (990, 'stable'), (500, 'stable-updates'), (500, 'unstable'), > (500, 'stable') > Architecture: amd64 (x86_64) > Foreign Architectures: i386 > > > Versions of packages scons depends on: > ii python3 3.9.1-1 > ii python3-pkg-resources 51.3.3-1 > > scons recommends no packages. > > scons suggests no packages. > > -- no debconf information >
