final step of build (`mimalloc-test-stress-dynamic`) fails on Amazon Linux 2

[emeryberger]

Bug description

• final step of build (mimalloc-test-stress-dynamic) fails on Amazon Linux 2

Steps to reproduce:

• clone on Amazon Linux 2 instance, try to build as usual (mkdir build && cd build && cmake .. && make).

Other information

$ uname -a
Linux xxx.us-east-1.amazon.com xxx.xxx #1 SMP Sat Sep 20 21:53:55 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

Error message (truncated):

[ 95%] Built target mimalloc-test-stress
[ 97%] Building C object CMakeFiles/mimalloc-test-stress-dynamic.dir/test/test-stress.c.o
[100%] Linking C executable mimalloc-test-stress-dynamic
CMakeFiles/mimalloc-test-stress-dynamic.dir/test/test-stress.c.o: In function `main':
test-stress.c:(.text.startup+0x106): undefined reference to `pthread_create'
test-stress.c:(.text.startup+0x12c): undefined reference to `pthread_join'
collect2: error: ld returned 1 exit status
make[2]: *** [mimalloc-test-stress-dynamic] Error 1
make[1]: *** [CMakeFiles/mimalloc-test-stress-dynamic.dir/all] Error 2
make: *** [all] Error 2

Fix status

PR incoming.