Can confirm this.
OS: Ubuntu 22.04 LTS
Clang version:
```
Ubuntu clang version 14.0.0-1ubuntu1.1
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
```
C++ code example:
```c++
#include
using std::cout;
using std::endl;
int main(int argc, char** argv) {
cout << "Hello, world!" << endl;
return 0;
}
```
Tried `clang++ -v main.cc`, and got this:
```
Ubuntu clang version 14.0.0-1ubuntu1.1
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/11
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/12
Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/12
Candidate multilib: .;@m64
Selected multilib: .;@m64
"/usr/lib/llvm-14/bin/clang" -cc1 -triple x86_64-pc-linux-gnu -emit-obj
-mrelax-all --mrelax-relocations -disable-free -clear-ast-before-backend
-disable-llvm-verifier -discard-value-names -main-file-name main-kmp.cc
-mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all
-fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases
-funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -mllvm
-treat-scalable-fixed-error-as-warning -debugger-tuning=gdb -v
-fcoverage-compilation-dir=/home/tianxing/dev/algorithms/KMP -resource-dir
/usr/lib/llvm-14/lib/clang/14.0.0 -internal-isystem
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++
-internal-isystem
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/x86_64-linux-gnu
-internal-isystem
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/backward
-internal-isystem /usr/lib/llvm-14/lib/clang/14.0.0/include -internal-isystem
/usr/local/include -internal-isystem
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-fdeprecated-macro -fdebug-compilation-dir=/home/tianxing/dev/algorithms/KMP
-ferror-limit 19 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions
-fcolor-diagnostics -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o
/tmp/main-kmp-a7fd49.o -x c++ main-kmp.cc
clang -cc1 version 14.0.0 based upon LLVM 14.0.0 default target
x86_64-pc-linux-gnu
ignoring nonexistent directory
"/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/backward"
ignoring nonexistent directory
"/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++
/usr/lib/llvm-14/lib/clang/14.0.0/include
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
main.cc:1:10: fatal error: 'iostream' file not found
#include
^~
1 error generated.
```
Looks like it explicitly wants libstdc++-12-dev header & library files.
** Changed in: llvm-toolchain-14 (Ubuntu)
Status: New => Confirmed
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2038340
Title:
clang packages in 22.04 have the wrong libstdc++-*-dev dependency
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https://bugs.launchpad.net/ubuntu/+source/llvm-toolchain-14/+bug/2038340/+subscriptions
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