FindIntl: Fix detection of intl built in to C library
FindIntl: Fix detection of intl built in to C library
Since !5333 (merged) we use check_symbol_exists
to check whether the
intl
library is built in to the C library. On some platforms the
tested symbols are provided as macros so the check passes without
linking any symbol. Instead, check whether a sample source file both
compiles and links.
Fixes: #21979 (closed)
Backport: release:HEAD^2