Unable build Clang for i386 arch: ../tools/extra/clangd/Shutdown.cpp:21:10: error: 'abort' is not a member of 'std'

[NTMan]

When I build Clang from release/10.x branch for target i386 I always get the compiler error:

[1433/1613] Building CXX object tools/...les/obj.clangDaemon.dir/Shutdown.cpp.o
FAILED: tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Shutdown.cpp.o 
/usr/bin/c++  -DCLANG_REPOSITORY_STRING="\"Fedora 10.0.0-0.1.20200119.git050e1a3.fc32\"" -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Itools/extra/clangd -I../tools/extra/clangd -I../include -Iinclude -I/include -O2 -g1 -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m32 -march=i686 -mtune=generic -msse2 -mfpmath=sse -mstackrealign -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -fPIC -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-class-memaccess -Wno-redundant-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -pedantic -Wno-long-long -DNDEBUG -MD -MT tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Shutdown.cpp.o -MF tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Shutdown.cpp.o.d -o tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Shutdown.cpp.o -c ../tools/extra/clangd/Shutdown.cpp
../tools/extra/clangd/Shutdown.cpp: In lambda function:
../tools/extra/clangd/Shutdown.cpp:21:10: error: 'abort' is not a member of 'std'
   21 |     std::abort();
      |          ^~~~~
../tools/extra/clangd/Shutdown.cpp: In function 'void clang::clangd::requestShutdown()':
../tools/extra/clangd/Shutdown.cpp:30:10: error: 'abort' is not a member of 'std'
   30 |     std::abort();
      |          ^~~~~
[1456/1613] Building CXX object tools/...akeFiles/obj.clangDaemon.dir/AST.cpp.o
../tools/extra/clangd/AST.cpp: In function 'std::string clang::clangd::{anonymous}::getQualification(clang::ASTContext&, const clang::DeclContext*, const clang::DeclContext*, llvm::function_ref<bool(clang::NestedNameSpecifier*)>)':
../tools/extra/clangd/AST.cpp:109:8: warning: variable 'ReachedNS' set but not used [-Wunused-but-set-variable]
  109 |   bool ReachedNS = false;
      |        ^~~~~~~~~
[1466/1613] Building CXX object tools/...es/obj.clangDaemon.dir/ParsedAST.cpp.o
ninja: build stopped: subcommand failed.

The target x86_64 Clang compiling without errors, and also LLVM compiled without error for both targets.

Full compiling log is here: https://pastebin.com/hD7uYVuJ

[DimitryAndric]

Try adding:

#include <cstdlib>

at the top of the file, that should fix it.

[NTMan]

Thanks, now i386 target builded too.

[gnarlie]

This is required for the release/10.x branch as well.