Add a note about ELF executables requiring to be linked with -export-dynamic

for dlsym() searches inside the executable to work.

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/libc/gen/dlopen.3 b/lib/libc/gen/dlopen.3
index 7cdfbd7..9e848f9 100644
--- a/lib/libc/gen/dlopen.3
+++ b/lib/libc/gen/dlopen.3
@@ -219,6 +219,14 @@ The object-intrinsic functions
 and
 .Fn _fini
 are called with no arguments, and are not expected to return values.
+.Sh NOTES
+ELF executables need to be linked
+using the
+.Fl export-dynamic
+option to
+.Xr ld 1
+for symbols defined in the executable to become visible to 
+.Fn dlsym .
 .Sh ERRORS
 .Fn dlopen
 and