Make failure 'span' file not found

[PhoenixPrincess]

New to submitting issues so please be patient. Im trying to make btop but the build fails when it can't find the file 'span'. The entire make output is shown below. I will note that I modified the makefile to use clang by appending " export CC=clang export CXX=clang++" to the top.

PLATFORM ?| Linux
ARCH ?| x86_64
GPU_SUPPORT :| true
CXX ?| clang++ (18.1.3)
CC ?| clang (18.1.3)
THREADS :| 16
REQFLAGS !| -std=c++23
WARNFLAGS :| -Wall -Wextra -pedantic
OPTFLAGS :| -O2
LDCXXFLAGS :| -pthread -DFMT_HEADER_ONLY -D_GLIBCXX_ASSERTIONS -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG -D_FILE_OFFSET_BITS=64 -DGPU_SUPPORT
CXXFLAGS +| $(REQFLAGS) $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)
LDFLAGS +| $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)

Building btop++ (v1.4.6) Linux x86_64
Configuring obj/config.h
Compiling src/linux/intel_gpu_top/igt_perf.c
Compiling src/linux/intel_gpu_top/intel_device_info.c
Compiling src/linux/intel_gpu_top/intel_name_lookup_shim.c
Compiling src/linux/intel_gpu_top/intel_gpu_top.c
Compiling src/btop.cpp
Compiling src/btop_cli.cpp
Compiling src/btop_config.cpp
Compiling src/btop_draw.cpp
Compiling src/btop_input.cpp
Compiling src/btop_log.cpp
Compiling src/btop_menu.cpp
Compiling src/btop_theme.cpp
Compiling src/btop_tools.cpp
Compiling src/main.cpp
Compiling src/linux/btop_collect.cpp
Compiling src/btop_shared.cpp
In file included from In file included from src/btop_menu.cpp:src/linux/btop_collect.cpp19:
src/main.cpp:3:
:src/btop.hpp:119::src/btop_menu.hpp1010:: : 21fatal error: :In file included from fatal error: 10In file included from src/btop.cpp:src/btop_log.cpp :'span' file not foundIn file included from 'algorithm' file not found:3:
src/btop_cli.cpp19
fatal error:
::
src/btop_log.hpp3src/btop_config.cpp:'atomic' file not found :
:src/btop.hpp5:
19119src/btop_cli.hpp:10 | | :#:15 :# 10i::21i | :n10c10l:un# src/btop_input.cppfatal error: :: 19dcin :e10lcfatal error: 'cstdint' file not foundfatal error: :<uslsrc/btop_tools.cpp
dpu:fatal error: 'array' file not founde ad19'cstdint' file not found
5ne:10:fatal error: < | > 'span' file not found
a#19<
l'limits' file not found i | a
g5
n#cit| fatal error: o | #lnoc ^~~~~~ r1iiumdl
'cmath' file not found19 | tnieu d
| #hcc<>ce#imnlu s i>c
d19t<nl
e | dacu d| #irl| e<inru ^~~~~~~~cntad ^~~~~~~~~~~<

sc>yesptlu> ad
dn| i| t<m

    ^~~~~~~~~ci         ^~~~~~~      

mt
|
as t> ^~~~~~| h>

     ^~~~~~~~~      

| | ^~~~~~~~
^~~~~~~
1 error generated.
src/btop_theme.cpp:19:10: fatal error: 'cmath' file not found
19 | #include
| ^~~~~~~
src/btop_shared.cpp:20:10: fatal error: 'filesystem' file not found
20 | #include
| ^~~~~~~~~~~~
src/btop_draw.cpp:19:10: fatal error: 'algorithm' file not found
19 | #include
| ^~~~~~~~~~~
make: *** [Makefile:398: obj/main.o] Error 1
make: *** Waiting for unfinished jobs....
16% -> obj/intel_device_info.c.o (32KiB) (00s)
11% -> obj/intel_name_lookup_shim.c.o(8.0KiB) (00s)
16% -> obj/igt_perf.c.o (8.0KiB) (00s)
22% -> obj/intel_gpu_top.c.o (20KiB) (00s)
1 error generated.
1 error generated.
make: *** [Makefile:398: obj/btop_shared.o] Error 1
make: *** [Makefile:398: obj/btop_theme.o] Error 1
1 error generated.
1 error generated.
make: *** [Makefile:398: obj/btop_tools.o] Error 1
make: *** [Makefile:398: obj/btop_input.o] Error 1
1 error generated.
make: *** [Makefile:398: obj/btop_cli.o] Error 1
1 error generated.
1 error generated.
make: *** [Makefile:398: obj/btop_log.o] Error 1
make: *** [Makefile:398: obj/btop_menu.o] Error 1
1 error generated.
make: *** [Makefile:398: obj/btop_config.o] Error 1
1 error generated.
make: *** [Makefile:398: obj/btop.o] Error 1
1 error generated.
1 error generated.
make: *** [Makefile:398: obj/btop_draw.o] Error 1
make: *** [Makefile:398: obj/linux/btop_collect.o] Error 1

[deckstose]

Your compiler is too old, you need Clang 19 or later.

[PhoenixPrincess]

Okay after messing around for a while here is what solved everything:
Firstly, I am running the latest KDE Neon which uses Ubuntu 24.04 noble.
In order to make I had to remove all clang stuff any llvm stuff to get a clean slate then install SPECIFICALLY clang-19. Clang-20 DID NOT WORK.
At the top of the makefile I used
export CC=clang-19 export CXX=clang++-19
I installed clang-19 and clang++-19 just by using the command

sudo apt install clang-19