profile-generate is used to generate compilation feedback optimization data, not just code coverage data
It will rely on the toolchain library:
nuttx/libs/libc/misc/lib_utsname.c:94:(.text.uname+0x2c): undefined reference to `__gcov_indirect_call_profiler_v4'
arm-none-eabi-ld: nuttx/libs/libc/misc/lib_utsname.c:113:(.text.uname+0x178): undefined reference to `__gcov_indirect_call'
arm-none-eabi-ld: nuttx/libs/libc/misc/lib_utsname.c:113:(.text.uname+0x188): undefined reference to `__gcov_time_profiler_counter'
arm-none-eabi-ld: nuttx/staging/libc.a(lib_utsname.o):(.data..LPBX0+0x30): undefined reference to `__gcov_merge_time_profile'
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
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