.\"O .SH SYNOPSIS
.SH ½ñ¼°
.nf
-.B #define _GNU_SOURCE
+.\"O .BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
+.BR "#define _GNU_SOURCE" " /* feature_test_macros(7) »²¾È */"
.B #include <link.h>
\fBint dl_iterate_phdr(\fP
.BR readelf (1),
.BR dlopen (3),
.BR elf (5),
-.BR feature_test_macros (7),
.BR ld.so (8),
.\"O and the
.\"O .I "Executable and Linking Format Specification"