re-enable pmcstat, pmccontrol, and pmcannotate for gcc4 builds

I had disabled building of the aforementioned targets due to warnings breaking
tinderbox. This silences the warning and restores them to the build.

Reported by:	jhibbits
Reviewed by:	jhibbits
Approved by:	re (gjb)

lib/Makefile

@@ -70,6 +70,8 @@ SUBDIR=	${SUBDIR_BOOTSTRAP} \
 	libpathconv \
 	libpcap \
 	libpjdlog \
+	libpmc \
+	libpmcstat \
 	${_libproc} \
 	libprocstat \
 	libregex \
@@ -198,9 +200,6 @@ _libdl=		libdl
 .endif
 
 SUBDIR.${MK_OPENSSL}+=	libmp
-.if (${COMPILER_TYPE} == "clang" || (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60100 && ${MACHINE_CPUARCH} != "riscv"))
-SUBDIR.${MK_PMC}+=	libpmc libpmcstat
-.endif
 SUBDIR.${MK_RADIUS_SUPPORT}+=	libradius
 SUBDIR.${MK_SENDMAIL}+=	libmilter libsm libsmdb libsmutil
 SUBDIR.${MK_TELNET}+=	libtelnet

lib/libpmc/Makefile

@@ -7,7 +7,7 @@ SRCS=	libpmc.c pmclog.c libpmc_pmu_util.c libpmc_json.cc
 INCS=	pmc.h pmclog.h pmcformat.h
 
 CFLAGS+= -I${.CURDIR}
-CWARNFLAGS.gcc+= -Wno-shadow
+CWARNFLAGS.gcc+= -Wno-shadow -Wno-cast-align
 
 .if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386"
 

usr.sbin/Makefile

@@ -59,6 +59,9 @@ SUBDIR=	adduser \
 	nologin \
 	pciconf \
 	periodic \
+	pmcannotate \
+	pmccontrol \
+	pmcstat \
 	pnfsdscopymr \
 	pnfsdsfile \
 	pnfsdskill \
@@ -185,11 +188,8 @@ SUBDIR.${MK_OPENSSL}+=	keyserv
 SUBDIR.${MK_PC_SYSINSTALL}+=	pc-sysinstall
 SUBDIR.${MK_PF}+=	ftp-proxy
 SUBDIR.${MK_PKGBOOTSTRAP}+=	pkg
-.if (${COMPILER_TYPE} == "clang" || (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60100 && ${MACHINE_CPUARCH} != "riscv"))
+.if ${COMPILER_FEATURES:Mc++11}
 SUBDIR.${MK_PMC}+=	pmc
-SUBDIR.${MK_PMC}+=	pmcannotate
-SUBDIR.${MK_PMC}+=	pmccontrol
-SUBDIR.${MK_PMC}+=	pmcstat
 .endif
 SUBDIR.${MK_PMC}+=	pmcstudy
 SUBDIR.${MK_PORTSNAP}+=	portsnap