8000 Compiling with gcc 15 gives error cannot declare ::main with a linkage specification [-Wpedantic] · Issue #1873 · colobot/colobot · GitHub
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Compiling with gcc 15 gives error cannot declare ::main with a linkage specification [-Wpedantic] #1873
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@papoteur-mga

Description

@papoteur-mga

To reproduce

Got colobot-0.2.2 from github archive
Build is done within a rpm spec using rpmbuild for Mageia Cauldron. Build instructions are:

%cmake -GNinja \
       -DCOLOBOT_INSTALL_LIB_DIR:PATH=%{_libdir}/%{name} \      
       -DCOLOBOT_INSTALL_DATA_DIR:PATH=%{_gamesdatadir}/%{name}
 %cmake_build

Error is

FAILED: src/CMakeFiles/colobot.dir/app/main.cpp.o 
/usr/bin/g++ -DBOOST_ATOMIC_DYN_LINK -DBOOST_ATOMIC_NO_LIB -DBOOST_FILESYSTEM_DYN_LINK -DBOOST_FILESYSTEM_NO_LIB -DBOOST_NO_CXX11_SCOPED_ENUMS -DBOOST_NO_SCOPED_ENUMS -DBOOST_REGEX_DYN_LINK -DBOOST_REGEX_NO_LIB -DBOOST_SYSTEM_DYN_LINK -DBOOST_SYSTEM_NO_LIB -DHAVE_DEMANGLE -DNOEXCEPT=noexcept -DTEST_VIRTUAL="" -I/builddir/build/BUILD/colobot-0.2.2-build/colobot-colobot-gold-0.2.2-alpha/src -I/builddir/build/BUILD/colobot-0.2.2-build/colobot-colobot-gold-0.2.2-alpha/src/.. -I/builddir/build/BUILD/colobot-0.2.2-build/colobot-colobot-gold-0.2.2-alpha/build/src -I/builddir/build/BUILD/colobot-0.2.2-build/colobot-colobot-gold-0.2.2-alpha/src/CBot/.. -isystem /builddir/build/BUILD/colobot-0.2.2-build/colobot-colobot-gold-0.2.2-alpha/lib/localename -isystem /usr/include/SDL2 -isystem /usr/include/AL -O2 -g -pipe -Wformat -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -m64 -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection=full -Wall -Wold-style-cast -pedantic-errors -Wmissing-declarations -Wno-error=deprecated-declarations -Wsuggest-override -DNDEBUG -std=c++17 -MD -MT src/CMakeFiles/colobot.dir/app/main.cpp.o -MF src/CMakeFiles/colobot.dir/app/main.cpp.o.d -o src/CMakeFiles/colobot.dir/app/main.cpp.o -c /builddir/build/BUILD/colobot-0.2.2-build/colobot-colobot-gold-0.2.2-alpha/src/app/main.cpp
/builddir/build/BUILD/colobot-0.2.2-build/colobot-colobot-gold-0.2.2-alpha/src/app/main.cpp:108:5: error: cannot declare '::main' with a linkage specification [-Wpedantic]
 108 | int main(int argc, char *argv[])
     |     ^~~~

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