diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index 3474068a9979..5f0067243f1e 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -36,6 +36,14 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20200330: GDB_LIBEXEC option retired (always true)
+OLD_FILES+=usr/bin/gdb
+OLD_FILES+=usr/bin/gdbserver
+OLD_FILES+=usr/bin/kgdb
+OLD_FILES+=usr/share/man/man1/gdb.1.gz
+OLD_FILES+=usr/share/man/man1/gdbserver.1.gz
+OLD_FILES+=usr/share/man/man1/kgdb.1.gz
+
 # 20200327: OCF refactoring
 OLD_FILES+=usr/share/man/man9/crypto_find_driver.9
 OLD_FILES+=usr/share/man/man9/crypto_register.9
diff --git a/gnu/usr.bin/gdb/Makefile b/gnu/usr.bin/gdb/Makefile
index c9564c232a3c..114c335fd0fd 100644
--- a/gnu/usr.bin/gdb/Makefile
+++ b/gnu/usr.bin/gdb/Makefile
@@ -4,10 +4,4 @@
 
 SUBDIR=	libgdb gdb kgdb
 
-.if ${MK_GDB_LIBEXEC} == "no"
-.if exists(${.CURDIR}/gdbserver/reg-${MACHINE_CPUARCH}.c)
-SUBDIR+=gdbserver
-.endif
-.endif
-
 .include <bsd.subdir.mk>
diff --git a/gnu/usr.bin/gdb/Makefile.inc b/gnu/usr.bin/gdb/Makefile.inc
index 68e7a6c3b986..097975de3128 100644
--- a/gnu/usr.bin/gdb/Makefile.inc
+++ b/gnu/usr.bin/gdb/Makefile.inc
@@ -58,7 +58,7 @@ GENSRCS+= nm.h tm.h
 CFLAGS+= -DCROSS_DEBUGGER -I${BMAKE_ROOT:H:H}
 GDB_SUFFIX= -${TARGET_ARCH}
 MAN=
-.elif ${MK_GDB_LIBEXEC} != "no"
+.else
 BINDIR?=	/usr/libexec
 MAN=
 .endif
diff --git a/share/mk/src.opts.mk b/share/mk/src.opts.mk
index 0c836c72b72c..08cc821df0e9 100644
--- a/share/mk/src.opts.mk
+++ b/share/mk/src.opts.mk
@@ -106,7 +106,6 @@ __DEFAULT_YES_OPTIONS = \
     FTP \
     GAMES \
     GDB \
-    GDB_LIBEXEC \
     GNU_DIFF \
     GNU_GREP \
     GOOGLETEST \
diff --git a/tools/build/mk/OptionalObsoleteFiles.inc b/tools/build/mk/OptionalObsoleteFiles.inc
index 9f02de5396e9..11a5ce3648c5 100644
--- a/tools/build/mk/OptionalObsoleteFiles.inc
+++ b/tools/build/mk/OptionalObsoleteFiles.inc
@@ -2282,16 +2282,7 @@ OLD_FILES+=usr/bin/llvm-profdata
 OLD_FILES+=usr/share/man/man1/llvm-cov.1.gz
 .endif
 
-.if ${MK_GDB} == no || ${MK_GDB_LIBEXEC} == yes
-OLD_FILES+=usr/bin/gdb
-OLD_FILES+=usr/bin/gdbserver
-OLD_FILES+=usr/bin/kgdb
-OLD_FILES+=usr/share/man/man1/gdb.1.gz
-OLD_FILES+=usr/share/man/man1/gdbserver.1.gz
-OLD_FILES+=usr/share/man/man1/kgdb.1.gz
-.endif
-
-.if ${MK_GDB} == no || ${MK_GDB_LIBEXEC} == no
+.if ${MK_GDB} == no
 OLD_FILES+=usr/libexec/gdb
 OLD_FILES+=usr/libexec/kgdb
 .endif
diff --git a/tools/build/options/WITHOUT_GDB_LIBEXEC b/tools/build/options/WITHOUT_GDB_LIBEXEC
deleted file mode 100644
index 4fbe30cb846e..000000000000
--- a/tools/build/options/WITHOUT_GDB_LIBEXEC
+++ /dev/null
@@ -1,5 +0,0 @@
-.\" $FreeBSD$
-Set to install
-.Xr gdb 1
-into
-.Pa /usr/bin .
diff --git a/tools/build/options/WITH_GDB_LIBEXEC b/tools/build/options/WITH_GDB_LIBEXEC
deleted file mode 100644
index 7ba0bf1d9508..000000000000
--- a/tools/build/options/WITH_GDB_LIBEXEC
+++ /dev/null
@@ -1,10 +0,0 @@
-.\" $FreeBSD$
-Set to install
-.Xr gdb 1
-into
-.Pa /usr/libexec .
-This permits
-.Xr gdb 1
-to be used as a fallback for
-.Xr crashinfo 8
-if a newer version is not installed.