How to use clang-tidy with qt project

abarmotov

I can use https://github.com/KDE/clazy with: qmake -spec linux-clang QMAKE_CXX=clazy
Is it possible to use clang-tidy same way ?
QtCreator 4.6.0. can clang-tidy but is too damn slow and not convenient.

mrjj

Hi
I used ccache same way (in the .pro file) so if clang-tidy also works
as a meta compiler then
it should work.

abarmotov

Yes, the question is: can clang-tidy works with .pro as clazy ?
I dont know )
Another way is to use find *.cpp and call clang-tidy for every file, while no solution exists.

mrjj

Hi
why not just try it ?
its one line in the .pro file

abarmotov

I tried QMAKE_CXX=clang-tidy - not worked
This way or another ?

abarmotov

Created script to run clang-tidy manually, usage: ./RunClangTidy.sh /where/my.pro logSuffix

#!/bin/bash

# Run qmake to generate Makefile
qmake $1

# Checks
CHECKS="clang-*,cppcoreguidelines-*,modernize-*,performance-*,-clang-diagnostic-old-style-cast,-clang-diagnostic-sign-conversion,\
-modernize-use-auto,-cppcoreguidelines-special-member-functions,-cppcoreguidelines-pro-bounds-pointer-arithmetic,-cppcoreguidelines-pro-bounds-constant-array-index,\
-clang-diagnostic-conversion,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-cppcoreguidelines-pro-type-cstyle-cast,-clang-diagnostic-missing-variable-declarations,\
-clang-diagnostic-documentation-unknown-command,-clang-diagnostic-covered-switch-default"

# Warnings (from qtcreator - options - c++ - code model - clang)
WARN="-Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-unused-macros -Wno-newline-eof -Wno-exit-time-destructors -Wno-global-constructors \
-Wno-gnu-zero-variadic-macro-arguments -Wno-documentation -Wno-shadow -Wno-switch-enum -Wno-missing-prototypes -Wno-used-but-marked-unused \
-Wno-unknown-pragmas -Wno-unused-parameter"

# Get project includes from Makefile
INCLUDES=$(cat Makefile| grep "^INCPATH *="| awk -F"=" '{print $2}')

# Get project defines from Makefile
DEFINES=$(cat Makefile| grep "^DEFINES *="| awk -F"=" '{print $2}')

# Then COPY_FILE variable in Makefile contains all files of the project (QMake version 3.1)
LOGF="CLANG-TIDY-LOG_$2.CPP"
LOGF_NOQT="CLANG-TIDY-LOG_$2_NOQT.CPP"
(
date
FILE_COUNT=0
cat Makefile | grep "COPY_FILE" | grep cpp | while read -rd " " file
do
    [[ "${file##*cpp}" ]] && continue

    H="${file%.*}"

    ((FILE_COUNT++))
    echo "=== PROCESSING FILE: $FILE_COUNT $file [$H] ============================================================"

    clang-tidy \
    -checks="$CHECKS" \
    -header-filter="$H*" $file \
    -- \
    -std=c++1z \
    -D_REENTRANT -fPIC \
    $WARN $DEFINES $INCLUDES
done
date
) 2>&1 | tee $LOGF
cat $LOGF | grep -v QtCore > $LOGF_NOQT

Allan Jensen

Use bear, see https://www.kdab.com/clang-tidy-part-2-integrate-qmake-and-other-build-systems-using-bear/