more helpful "PCH file built from a different branch" message

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  • Quelque chose ne va pas ?
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Évaluation

Difficulté
3/5
Temps estimé
1-2 jours
Accessibilité débutants
35/100
Type d'issue
Bug
Clarté
Plutôt claire
Activité
À l'abandon
Stack technique
cpp
Domaine
build-system, cli

Piste de recherche

Commencez par l’invocation de make et la commande de compilation indiquées dans le rapport, en particulier par l’argument -include-pch faisant référence à stan/src/stan/model/model_header.hpp.gch. Reproduisez l’échec dû à une incompatibilité du compilateur, puis déterminez où cette erreur est remontée. Le travail est terminé lorsque la sortie identifie l’emplacement du PCH ou le reconstruit automatiquement, et que le comportement en cas d’échec est couvert par un test.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Description

enhancement good first issue
Summary:

The PCH file built from a different branch error does not provide a hint on how to fix it. Add such a hint.

Description:

When I try to build with the wrong precompiled header (PCH), I get this:

~/github/stan-dev/cmdstan (develop)$ make ~/temp2/simple

--- Translating Stan model to C++ code ---
bin/stanc  --o=/Users/bcarpenter/temp2/simple.hpp /Users/bcarpenter/temp2/simple.stan

--- Compiling, linking C++ code ---
clang++ -std=c++1y -Wno-unknown-warning-option -Wno-tautological-compare -Wno-sign-compare -D_REENTRANT -Wno-ignored-attributes      -I stan/lib/stan_math/lib/tbb_2020.3/include    -O3 -I src -I stan/src -I lib/rapidjson_1.1.0/ -I lib/CLI11-1.9.1/ -I stan/lib/stan_math/ -I stan/lib/stan_math/lib/eigen_3.3.9 -I stan/lib/stan_math/lib/boost_1.78.0 -I stan/lib/stan_math/lib/sundials_6.1.1/include -I stan/lib/stan_math/lib/sundials_6.1.1/src/sundials    -DBOOST_DISABLE_ASSERTS          -c -include-pch stan/src/stan/model/model_header.hpp.gch -x c++ -o /Users/bcarpenter/temp2/simple.o /Users/bcarpenter/temp2/simple.hpp
error: PCH file built from a different branch ((clang-1316.0.21.2.5)) than the compiler ((clang-1400.0.29.102))
1 error generated.
make: *** [/Users/bcarpenter/temp2/simple] Error 1

This is great that it says what's wrong, but it would be even better if it suggested how to fix the problem. I'm pretty sure I need to just delete a .pch file, but I don't know where it's at. A recursive search didn't work:

~/github/stan-dev/cmdstan (develop)$ ls -R -l | grep pch
-rw-r--r--   1 bcarpenter  1595  3773 Aug 10 12:07 pchip.hpp
-rw-r--r--  1 bcarpenter  1595   340 Aug 10 12:07 pch.hpp
-rwxr-xr-x  1 bcarpenter  1595  1175 Aug 10 12:07 cppcheck.sh
-rw-r--r--   1 bcarpenter  1595    537 Aug 10 12:07 pch.hpp
-rw-r--r--   1 bcarpenter  1595   2717 Aug 10 12:07 pch.jam
-rw-r--r--   1 bcarpenter  1595   2848 Aug 10 12:07 pch.py
~/github/stan-dev/cmdstan (develop)$
Reproducible Steps:

See above, but to reproduce it, you need to have two compilers, one of which built the pch file and a different one to tickle this error.

Current Output:

See above.

Expected Output:

Some hint as to where the pch file is that I need to delete. Even better, just automatically delete and rebuild after detecting this error.

Additional Information:

There are a lot of pages where people brought up this problem on our forums or in issues. The advice in the first hit on the forums didn't work, which suggested just running make clean. Here's what I get:

~/github/stan-dev/cmdstan (develop)$ make clean
rm -f -r test
rm -f 
rm -f 
rm -f 
rm -f 
~/github/stan-dev/cmdstan (develop)$ make ~/temp2/simple

--- Compiling, linking C++ code ---
clang++ -std=c++1y -Wno-unknown-warning-option -Wno-tautological-compare -Wno-sign-compare -D_REENTRANT -Wno-ignored-attributes      -I stan/lib/stan_math/lib/tbb_2020.3/include    -O3 -I src -I stan/src -I lib/rapidjson_1.1.0/ -I lib/CLI11-1.9.1/ -I stan/lib/stan_math/ -I stan/lib/stan_math/lib/eigen_3.3.9 -I stan/lib/stan_math/lib/boost_1.78.0 -I stan/lib/stan_math/lib/sundials_6.1.1/include -I stan/lib/stan_math/lib/sundials_6.1.1/src/sundials    -DBOOST_DISABLE_ASSERTS          -c -include-pch stan/src/stan/model/model_header.hpp.gch -x c++ -o /Users/bcarpenter/temp2/simple.o /Users/bcarpenter/temp2/simple.hpp
error: PCH file built from a different branch ((clang-1316.0.21.2.5)) than the compiler ((clang-1400.0.29.102))
1 error generated.
make: *** [/Users/bcarpenter/temp2/simple] Error 1
Current Version:

v2.30.1

Langage dominant
C++
Étoiles
240
Forks
105
Merge moyen
1 j 5 h
PR mergées (30 j)
1

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