fatal error: 'limits' file not found #include <limits>

Question

I am making the test-suite of llvm.

[test-suite-build$ make
Consolidate compiler generated dependencies of target fpcmp-target
[  0%] Built target fpcmp-target
Consolidate compiler generated dependencies of target timeit-target
[  0%] Built target timeit-target
[  0%] Built target build-litsupport
[  0%] Built target build-fpcmp
[  0%] Built target build-HashProgramOutput.sh
[  0%] Built target build-timeit
[  0%] Building CXX object Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/driver.cpp.o
In file included from /home/summer/llvm-16/test-suite/Bitcode/Benchmarks/Halide/local_laplacian/driver.cpp:1:
/home/summer/llvm-16/test-suite/Bitcode/Benchmarks/Halide/local_laplacian/../common/benchmark.h:4:10: fatal error: 'limits' file not found
#include <limits>
         ^~~~~~~~
1 error generated.
make[2]: *** [Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/build.make:76: Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/driver.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:14272: Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/all] Error 2
make: *** [Makefile:136: all] Error 2](https://stackoverflow.com)

I found limits.h in /usr/linux/

And I reinstall these libraries: gcc build-essential manpages-dev make perl zlib1g zlib1g-dev libssl-dev linux-libc-dev

But doesn't work

You are trying to build C++ code with a C compiler. Use g++ instead of gcc. — john
– john, Commented Oct 6, 2023 at 7:54

Sebastian Redl · Accepted Answer · 2023-10-06 07:36:45Z

2

If you want to compile C++ code in a typical (Ubuntu) linux, you need the "g++" package.

answered Oct 6, 2023 at 7:36

Sebastian Redl

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HolyBlackCat Over a year ago

Or at least libstdc++-dev, which is likely a dependency of g++

vict · Accepted Answer · 2023-10-06 07:58:01Z

1

"limits.h" and and C++ <limits> are not the same thing. Equivalence of <limits> and <climits>

Otherwise, you are probably missing C++ std libs. Clang doesn't see basic headers

To make sure, compile first with -v flag to see where is it looking for those headers, so you can verify yourself if they exist.

Make sure you have C++ headers installed (e.g. package name libstdc++). Additionally make sure that you compile your C++ files with necessary flags (-std=c++, -stdlib=libstdc++).

edited Oct 6, 2023 at 7:58

answered Oct 6, 2023 at 7:48

vict

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2 Comments

HolyBlackCat Over a year ago

If you're going to install libc++-dev, -stdlib needs to be libc++, not libstdc++ (the latter is often the default).

vict Over a year ago

@HolyBlackCat You are right! I just wrote the clang stdlib name, because I was thinking about clang compiler. Edited response to suggest using GCC lib as it is more commonly used on linux. Thanks for pointing it out!

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