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freebsd-dev/share/mk/src.opts.mk
Bryan Drewery 83f4f35130 Follow-up r320149: Enable GPL_DTC if we're using GCC as the cross-compiler. 
This fixes object files landing in the source tree in gnu/usr.bin/dtc
for GCC platforms.

We cannot reliably detect if an external compiler is used here, and the
default YES option does include GCC_BOOTSTRAP which implies that GCC may
be used for the build.

The problem manifests when not using an external compiler, and the host
compiler is clang.  When a fresh build is done (no OBJDIR yet) the
'make obj' treewalk is done before 'make cross-tools', so
COMPILER_FEATURES at this point contains 'c++11' since the host compiler
was used for COMPILER_FEATURES.  Once cross-tools builds the GCC
bootstrap compiler and then descends into 'make everything',
COMPILER_FEATURES no longer contains 'c++11' and MK_GPL_DTC defaults to
enabled.  Now it builds in gnu/usr.bin/dtc without an OBJDIR preset and
drops files into the source tree.

The COMPILER_FEATURES check here is useful for knowing if we can *bootstrap*
C++11 things.  Indeed we do bootstrap dtc as a build tool so it is
useful for enabling the BSD dtc for the build, but we end up needing the
GPL dtc for installation anyway.

Reviewed by:	manu, emaste
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12817
2017-10-31 00:03:32 +00:00

482 lines
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Makefile
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# $FreeBSD$
#
# Option file for FreeBSD /usr/src builds.
#
# Users define WITH_FOO and WITHOUT_FOO on the command line or in /etc/src.conf
# and /etc/make.conf files. These translate in the build system to MK_FOO={yes,no}
# with sensible (usually) defaults.
#
# Makefiles must include bsd.opts.mk after defining specific MK_FOO options that
# are applicable for that Makefile (typically there are none, but sometimes there
# are exceptions). Recursive makes usually add MK_FOO=no for options that they wish
# to omit from that make.
#
# Makefiles must include bsd.mkopt.mk before they test the value of any MK_FOO
# variable.
#
# Makefiles may also assume that this file is included by src.opts.mk should it
# need variables defined there prior to the end of the Makefile where
# bsd.{subdir,lib.bin}.mk is traditionally included.
#
# The old-style YES_FOO and NO_FOO are being phased out. No new instances of them
# should be added. Old instances should be removed since they were just to
# bridge the gap between FreeBSD 4 and FreeBSD 5.
#
# Makefiles should never test WITH_FOO or WITHOUT_FOO directly (although an
# exception is made for _WITHOUT_SRCONF which turns off this mechanism
# completely inside bsd.*.mk files).
#
.if !target(__<src.opts.mk>__)
__<src.opts.mk>__:
.include <bsd.own.mk>
#
# Define MK_* variables (which are either "yes" or "no") for users
# to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the
# make(1) environment.
# These should be tested with `== "no"' or `!= "no"' in makefiles.
# The NO_* variables should only be set by makefiles for variables
# that haven't been converted over.
#
# These options are used by the src builds
__DEFAULT_YES_OPTIONS = \
ACCT \
ACPI \
AMD \
APM \
AT \
ATM \
AUDIT \
AUTHPF \
AUTOFS \
BHYVE \
BINUTILS \
BINUTILS_BOOTSTRAP \
BLACKLIST \
BLUETOOTH \
BOOT \
BOOTPARAMD \
BOOTPD \
BSD_CPIO \
BSDINSTALL \
BSNMP \
BZIP2 \
CALENDAR \
CAPSICUM \
CASPER \
CCD \
CDDL \
CPP \
CROSS_COMPILER \
CRYPT \
CTM \
CUSE \
CXX \
DIALOG \
DICT \
DMAGENT \
DYNAMICROOT \
ED_CRYPTO \
EE \
EFI \
ELFTOOLCHAIN_BOOTSTRAP \
EXAMPLES \
FDT \
FILE \
FINGER \
FLOPPY \
FMTREE \
FORTH \
FP_LIBC \
FREEBSD_UPDATE \
FTP \
GAMES \
GCOV \
GDB \
GNU_DIFF \
GNU_GREP \
GPIO \
HAST \
HTML \
HYPERV \
ICONV \
INET \
INET6 \
INETD \
IPFILTER \
IPFW \
ISCSI \
JAIL \
KDUMP \
KVM \
LDNS \
LDNS_UTILS \
LEGACY_CONSOLE \
LIB32 \
LIBPTHREAD \
LIBTHR \
LOCALES \
LOCATE \
LPR \
LS_COLORS \
LZMA_SUPPORT \
MAIL \
MAILWRAPPER \
MAKE \
NDIS \
NETCAT \
NETGRAPH \
NLS_CATALOGS \
NS_CACHING \
NTP \
OPENSSL \
PAM \
PC_SYSINSTALL \
PF \
PKGBOOTSTRAP \
PMC \
PORTSNAP \
PPP \
QUOTAS \
RADIUS_SUPPORT \
RBOOTD \
RESCUE \
ROUTED \
SENDMAIL \
SETUID_LOGIN \
SHAREDOCS \
SOURCELESS \
SOURCELESS_HOST \
SOURCELESS_UCODE \
SVNLITE \
SYSCONS \
SYSTEM_COMPILER \
TALK \
TCP_WRAPPERS \
TCSH \
TELNET \
TEXTPROC \
TFTP \
TIMED \
UNBOUND \
USB \
UTMPX \
VI \
VT \
WIRELESS \
WPA_SUPPLICANT_EAPOL \
ZFS \
ZONEINFO
__DEFAULT_NO_OPTIONS = \
BSD_GREP \
BSD_GREP_FASTMATCH \
CLANG_EXTRAS \
DTRACE_TESTS \
GNU_GREP_COMPAT \
HESIOD \
LIBSOFT \
LOADER_FORCE_LE \
NAND \
OFED \
OPENLDAP \
REPRODUCIBLE_BUILD \
RPCBIND_WARMSTART_SUPPORT \
SHARED_TOOLCHAIN \
SORT_THREADS \
SVN \
ZONEINFO_LEAPSECONDS_SUPPORT \
ZONEINFO_OLD_TIMEZONES_SUPPORT \
#
# Default behaviour of some options depends on the architecture. Unfortunately
# this means that we have to test TARGET_ARCH (the buildworld case) as well
# as MACHINE_ARCH (the non-buildworld case). Normally TARGET_ARCH is not
# used at all in bsd.*.mk, but we have to make an exception here if we want
# to allow defaults for some things like clang to vary by target architecture.
# Additional, per-target behavior should be rarely added only after much
# gnashing of teeth and grinding of gears.
#
.if defined(TARGET_ARCH)
__T=${TARGET_ARCH}
.else
__T=${MACHINE_ARCH}
.endif
.if defined(TARGET)
__TT=${TARGET}
.else
__TT=${MACHINE}
.endif
.include <bsd.compiler.mk>
# If the compiler is not C++11 capable, disable Clang and use GCC instead.
# This means that architectures that have GCC 4.2 as default can not
# build Clang without using an external compiler.
.if ${COMPILER_FEATURES:Mc++11} && (${__T} == "aarch64" || \
${__T} == "amd64" || ${__TT} == "arm" || ${__T} == "i386")
# Clang is enabled, and will be installed as the default /usr/bin/cc.
__DEFAULT_YES_OPTIONS+=CLANG CLANG_BOOTSTRAP CLANG_FULL CLANG_IS_CC LLD
__DEFAULT_NO_OPTIONS+=GCC GCC_BOOTSTRAP GNUCXX GPL_DTC
.elif ${COMPILER_FEATURES:Mc++11} && ${__T:Mriscv*} == "" && ${__T} != "sparc64"
# If an external compiler that supports C++11 is used as ${CC} and Clang
# supports the target, then Clang is enabled but GCC is installed as the
# default /usr/bin/cc.
__DEFAULT_YES_OPTIONS+=CLANG CLANG_FULL GCC GCC_BOOTSTRAP GNUCXX GPL_DTC
__DEFAULT_NO_OPTIONS+=CLANG_BOOTSTRAP CLANG_IS_CC LLD
.else
# Everything else disables Clang, and uses GCC instead.
__DEFAULT_YES_OPTIONS+=GCC GCC_BOOTSTRAP GNUCXX GPL_DTC
__DEFAULT_NO_OPTIONS+=CLANG CLANG_BOOTSTRAP CLANG_FULL CLANG_IS_CC LLD
.endif
# In-tree binutils/gcc are older versions without modern architecture support.
.if ${__T} == "aarch64" || ${__T:Mriscv*} != ""
BROKEN_OPTIONS+=BINUTILS BINUTILS_BOOTSTRAP GCC GCC_BOOTSTRAP GDB
.endif
.if ${__T:Mriscv*} != ""
BROKEN_OPTIONS+=PROFILE # "sorry, unimplemented: profiler support for RISC-V"
BROKEN_OPTIONS+=TESTS # "undefined reference to `_Unwind_Resume'"
BROKEN_OPTIONS+=CXX # "libcxxrt.so: undefined reference to `_Unwind_Resume_or_Rethrow'"
.endif
.if ${__T} == "aarch64" || ${__T} == "amd64" || ${__T} == "i386" || \
${__T:Mriscv*} != ""
__DEFAULT_YES_OPTIONS+=LLVM_LIBUNWIND
.else
__DEFAULT_NO_OPTIONS+=LLVM_LIBUNWIND
.endif
.if ${__T} == "aarch64"
__DEFAULT_YES_OPTIONS+=LLD_BOOTSTRAP LLD_IS_LD
.else
__DEFAULT_NO_OPTIONS+=LLD_BOOTSTRAP LLD_IS_LD
.endif
.if ${__T} == "aarch64" || ${__T} == "amd64" || ${__T} == "i386"
__DEFAULT_YES_OPTIONS+=LLDB
.else
__DEFAULT_NO_OPTIONS+=LLDB
.endif
# LLVM lacks support for FreeBSD 64-bit atomic operations for ARMv4/ARMv5
.if ${__T} == "arm" || ${__T} == "armeb"
BROKEN_OPTIONS+=LLDB
.endif
# GDB in base is generally less functional than GDB in ports. Ports GDB
# does not yet contain kernel support for arm, and sparc64 kernel support
# has not been tested.
.if ${__T:Marm*} != "" || ${__T} == "sparc64"
__DEFAULT_NO_OPTIONS+=GDB_LIBEXEC
.else
__DEFAULT_YES_OPTIONS+=GDB_LIBEXEC
.endif
# Only doing soft float API stuff on armv6 and armv7
.if ${__T} != "armv6" && ${__T} != "armv7"
BROKEN_OPTIONS+=LIBSOFT
.endif
.if ${__T:Mmips*}
BROKEN_OPTIONS+=SSP
.endif
.if ${__T:Mmips*} || ${__T:Mpowerpc*} || ${__T:Msparc64} || ${__T:Mriscv*}
BROKEN_OPTIONS+=EFI
.endif
.if ${__T:Mmips64*}
# profiling won't work on MIPS64 because there is only assembly for o32
BROKEN_OPTIONS+=PROFILE
.endif
.if ${__T} == "aarch64" || ${__T} == "amd64" || ${__T} == "i386" || \
${__T} == "powerpc64" || ${__T} == "sparc64"
__DEFAULT_YES_OPTIONS+=CXGBETOOL
.else
__DEFAULT_NO_OPTIONS+=CXGBETOOL
.endif
.include <bsd.mkopt.mk>
#
# MK_* options that default to "yes" if the compiler is a C++11 compiler.
#
.for var in \
LIBCPLUSPLUS
.if !defined(MK_${var})
.if ${COMPILER_FEATURES:Mc++11}
.if defined(WITHOUT_${var})
MK_${var}:= no
.else
MK_${var}:= yes
.endif
.else
.if defined(WITH_${var})
MK_${var}:= yes
.else
MK_${var}:= no
.endif
.endif
.endif
.endfor
#
# Force some options off if their dependencies are off.
# Order is somewhat important.
#
.if !${COMPILER_FEATURES:Mc++11}
MK_LLVM_LIBUNWIND:= no
.endif
.if ${MK_BINUTILS} == "no"
MK_GDB:= no
.endif
.if ${MK_CAPSICUM} == "no"
MK_CASPER:= no
.endif
.if ${MK_LIBPTHREAD} == "no"
MK_LIBTHR:= no
.endif
.if ${MK_LDNS} == "no"
MK_LDNS_UTILS:= no
MK_UNBOUND:= no
.endif
.if ${MK_SOURCELESS} == "no"
MK_SOURCELESS_HOST:= no
MK_SOURCELESS_UCODE:= no
.endif
.if ${MK_CDDL} == "no"
MK_ZFS:= no
MK_CTF:= no
.endif
.if ${MK_CRYPT} == "no"
MK_OPENSSL:= no
MK_OPENSSH:= no
MK_KERBEROS:= no
.endif
.if ${MK_CXX} == "no"
MK_CLANG:= no
MK_GNUCXX:= no
MK_TESTS:= no
.endif
.if ${MK_DIALOG} == "no"
MK_BSDINSTALL:= no
.endif
.if ${MK_MAIL} == "no"
MK_MAILWRAPPER:= no
MK_SENDMAIL:= no
MK_DMAGENT:= no
.endif
.if ${MK_NETGRAPH} == "no"
MK_ATM:= no
MK_BLUETOOTH:= no
.endif
.if ${MK_NLS} == "no"
MK_NLS_CATALOGS:= no
.endif
.if ${MK_OPENSSL} == "no"
MK_OPENSSH:= no
MK_KERBEROS:= no
.endif
.if ${MK_PF} == "no"
MK_AUTHPF:= no
.endif
.if ${MK_TESTS} == "no"
MK_DTRACE_TESTS:= no
.endif
.if ${MK_ZONEINFO} == "no"
MK_ZONEINFO_LEAPSECONDS_SUPPORT:= no
MK_ZONEINFO_OLD_TIMEZONES_SUPPORT:= no
.endif
.if ${MK_CROSS_COMPILER} == "no"
MK_BINUTILS_BOOTSTRAP:= no
MK_CLANG_BOOTSTRAP:= no
MK_ELFTOOLCHAIN_BOOTSTRAP:= no
MK_GCC_BOOTSTRAP:= no
.endif
.if ${MK_TOOLCHAIN} == "no"
MK_BINUTILS:= no
MK_CLANG:= no
MK_GCC:= no
MK_GDB:= no
MK_INCLUDES:= no
MK_LLD:= no
MK_LLDB:= no
.endif
.if ${MK_CLANG} == "no"
MK_CLANG_EXTRAS:= no
MK_CLANG_FULL:= no
.endif
#
# MK_* options whose default value depends on another option.
#
.for vv in \
GSSAPI/KERBEROS \
MAN_UTILS/MAN
.if defined(WITH_${vv:H})
MK_${vv:H}:= yes
.elif defined(WITHOUT_${vv:H})
MK_${vv:H}:= no
.else
MK_${vv:H}:= ${MK_${vv:T}}
.endif
.endfor
#
# Set defaults for the MK_*_SUPPORT variables.
#
#
# MK_*_SUPPORT options which default to "yes" unless their corresponding
# MK_* variable is set to "no".
#
.for var in \
BLACKLIST \
BZIP2 \
INET \
INET6 \
KERBEROS \
KVM \
NETGRAPH \
PAM \
TESTS \
WIRELESS
.if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no"
MK_${var}_SUPPORT:= no
.else
MK_${var}_SUPPORT:= yes
.endif
.endfor
.if !${COMPILER_FEATURES:Mc++11}
MK_LLDB:= no
.endif
# gcc 4.8 and newer supports libc++, so suppress gnuc++ in that case.
# while in theory we could build it with that, we don't want to do
# that since it creates too much confusion for too little gain.
# XXX: This is incomplete and needs X_COMPILER_TYPE/VERSION checks too
# to prevent Makefile.inc1 from bootstrapping unneeded dependencies
# and to support 'make delete-old' when supplying an external toolchain.
.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 40800
MK_GNUCXX:=no
MK_GCC:=no
.endif
.endif # !target(__<src.opts.mk>__)
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