Implement WITH{,OUT}_{GCC,BINUTILS} to provide finer-grained control

over building gcc and binutils.  They default to true, unless
MK_TOOLCHAIN is no.

Reviewed by:	ru@

Makefile.inc1

@@ -1132,6 +1132,10 @@ _kgzip=		usr.sbin/kgzip
 .endif
 .endif
 
+.if ${MK_BINUTILS} != "no"
+_binutils=	gnu/usr.bin/binutils
+.endif
+
 .if ${MK_CLANG} != "no"
 .if ${CC:T:Mclang} == "clang"
 _clang=		usr.bin/clang
@@ -1139,12 +1143,16 @@ _clang_libs=	lib/clang
 .endif
 .endif
 
+.if ${MK_GCC} != "no"
+_cc=		gnu/usr.bin/cc
+.endif
+
 cross-tools:
 .for _tool in \
     ${_clang_libs} \
     ${_clang} \
-    gnu/usr.bin/binutils \
-    gnu/usr.bin/cc \
+    ${_binutils} \
+    ${_cc} \
     usr.bin/xlint/lint1 usr.bin/xlint/lint2 usr.bin/xlint/xlint \
     ${_btxld} \
     ${_crunchide} \

gnu/usr.bin/Makefile

@@ -47,12 +47,14 @@ _texinfo=	texinfo
 _rcs=		rcs
 .endif
 
-.if ${MK_TOOLCHAIN} != "no"
+.if ${MK_BINUTILS} != "no"
 _binutils=	binutils
+.endif
+.if ${MK_GCC} != "no"
 _cc=		cc
+.endif
 .if ${MK_GDB} != "no"
 _gdb=		gdb
 .endif
-.endif
 
 .include <bsd.subdir.mk>

share/mk/bsd.own.mk

@@ -297,6 +297,7 @@ __DEFAULT_YES_OPTIONS = \
     BIND_MTREE \
     BIND_NAMED \
     BIND_UTILS \
+    BINUTILS \
     BLUETOOTH \
     BOOT \
     BSD_CPIO \
@@ -317,6 +318,7 @@ __DEFAULT_YES_OPTIONS = \
     FP_LIBC \
     FREEBSD_UPDATE \
     GAMES \
+    GCC \
     GCOV \
     GDB \
     GNU \
@@ -529,7 +531,9 @@ MK_GROFF:=	no
 .endif
 
 .if ${MK_TOOLCHAIN} == "no"
+MK_BINUTILS:=	no
 MK_CLANG:=	no
+MK_GCC:=	no
 MK_GDB:=	no
 .endif
 

tools/build/options/WITHOUT_BINUTILS

@@ -0,0 +1,7 @@
+.\" $FreeBSD$
+Set to not install binutils (as, c++-filt, gconv, gnu-ar, gnu-randlib,
+ld, nm, objcopy, objdump, readelf, size and strip)
+.Bf -symbolic
+The option does not generally work for build targets, unless some alternative
+toolchain is enabled.
+.Ef

tools/build/options/WITHOUT_GCC

@@ -0,0 +1,6 @@
+.\" $FreeBSD$
+Set to not install gcc and g++.
+.Bf -symbolic
+The option does not generally work for build targets, unless some alternative
+toolchain is enabled.
+.Ef