path: root/mk/compiler/gcc.mk

# $NetBSD: gcc.mk,v 1.208 2019/09/19 06:46:59 rillig Exp $
#
# This is the compiler definition for the GNU Compiler Collection.
#
# User-settable variables:
#
# GCCBASE
#	If using a native GCC and the compiler is not in $PATH then
#	this should be set to the base installation directory.
#
# USE_NATIVE_GCC
#	When set to "yes", the native gcc is used, no matter which
#	compiler version a package requires.
#
# USE_PKGSRC_GCC
#	When set to "yes", use an appropriate version of GCC from
#	pkgsrc based on GCC_REQD instead of the native compiler.
#
# USE_PKGSRC_GCC_RUNTIME
#	When set to "yes", the runtime gcc libraries (libgcc, libstdc++
#	etc) will be used from pkgsrc rather than the native compiler.
#
# GCC_VERSION_SUFFIX
#	Optional suffix for GCC binaries, i.e. if the installed names are like
#	/usr/bin/g++-5, /usr/bin/gcc-5 etc.

# Package-settable variables:
#
# GCC_REQD
#	The minimum version of the GNU Compiler Collection that is
#	required to build this package. Setting this variable doesn't
#	change the compiler that is used for building packages. See
#	ONLY_FOR_COMPILER for that purpose. This is a list of version
#	numbers, of which the maximum version is the definitive one.
#
#	This variable can also be set by the user when USE_PKGSRC_GCC
#	is in effect to ensure that a specific compiler is used for
#	packages which do not specify a higher version.
#
# USE_GCC_RUNTIME
#	Packages which build shared libraries but do not use libtool to
#	do so should define this variable.  It is used to determine whether
#	the gcc runtime should be depended upon when a user has enabled
#	USE_PKGSRC_GCC_RUNTIME.
#
# System-defined variables:
#
# CC_VERSION
#	A string of the form "gcc-4.3.2"
#
# CC_VERSION_STRING
#	The same(?) as CC_VERSION. FIXME: What's the difference between
#	the two?
#
# Keywords: gcc
#

.if !defined(COMPILER_GCC_MK)
COMPILER_GCC_MK=	defined

_VARGROUPS+=	gcc
_USER_VARS.gcc=	\
	USE_NATIVE_GCC USE_PKGSRC_GCC USE_PKGSRC_GCC_RUNTIME \
	GCCBASE GCC_VERSION_SUFFIX \
	USE_CROSS_COMPILE \
	PKGSRC_USE_FORTIFY PKGSRC_USE_RELRO PKGSRC_USE_SSP \
	COMPILER_USE_SYMLINKS CC
_PKG_VARS.gcc=	\
	GCC_REQD USE_GCC_RUNTIME USE_LANGUAGES
_SYS_VARS.gcc=	\
	CC_VERSION CC_VERSION_STRING LANGUAGES.gcc \
	CCPATH CPPPATH CXXPATH F77PATH FCPATH \
	PKG_CC PKG_CPP PKG_CXX PKG_FC FC PKGSRC_FORTRAN \
	ADAPATH GMKPATH GLKPATH GBDPATH CHPPATH GLSPATH GNTPATH PRPPATH
_DEF_VARS.gcc=	\
	MAKEFLAGS IMAKEOPTS \
	CFLAGS LDFLAGS \
	PREPEND_PATH \
	COMPILER_INCLUDE_DIRS COMPILER_LIB_DIRS \
	CWRAPPERS_APPEND.cc CWRAPPERS_APPEND.cxx CWRAPPERS_APPEND.ld \
	PKG_ADA PKG_GMK PKG_GLK PKG_GBD PKG_CHP PKG_GNT PKG_GLS PKG_PRP \
	PKGSRC_ADA PKGSRC_GMK PKGSRC_GLK PKGSRC_GBD PKGSRC_CHP PKGSRC_GNT PKGSRC_GLS PKGSRC_PRP \
	_CC _COMPILER_RPATH_FLAG _COMPILER_STRIP_VARS \
	_GCCBINDIR _GCC_ARCHDIR _GCC_BIN_PREFIX _GCC_CFLAGS \
	_GCC_CC _GCC_CPP _GCC_CXX _GCC_DEPENDENCY _GCC_DEPENDS \
	_GCC_DIST_NAME _GCC_DIST_VERSION \
	_GCC_FC _GCC_LDFLAGS _GCC_LIBDIRS _GCC_PKG \
	_GCC_PKGBASE _GCC_PKGSRCDIR _GCC_PKG_SATISFIES_DEP \
	_GCC_PREFIX _GCC_REQD _GCC_STRICTEST_REQD _GCC_SUBPREFIX \
	_GCC_TEST_DEPENDS _GCC_NEEDS_A_FORTRAN _GCC_VARS _GCC_VERSION \
	_GCC_VERSION_STRING \
	_GCC_ADA _GCC_GMK _GCC_GLK _GCC_GBD _GCC_CHP _GCC_GLS _GCC_GNT _GCC_PRP \
	_IGNORE_GCC _IGNORE_GCC3CXX _IGNORE_GCC3F77 _IGNORE_GCC3OBJC \
	_IS_BUILTIN_GCC \
	_LANGUAGES.gcc \
	_LINKER_RPATH_FLAG \
	_NEED_GCC2 _NEED_GCC3 _NEED_GCC34 _NEED_GCC44 \
	_NEED_GCC48 _NEED_GCC49 _NEED_GCC5 _NEED_GCC6 \
	_NEED_GCC7 _NEED_GCC8 _NEED_GCC_AUX _NEED_NEWER_GCC \
	_PKGSRC_GCC_VERSION \
	_USE_GCC_SHLIB _USE_PKGSRC_GCC \
	_WRAP_EXTRA_ARGS.CC \
	_EXTRA_CC_DIRS \
	_CXX_STD_VERSIONS \
	${_CXX_STD_VERSIONS:@std@_CXX_STD_FLAG.${std}@} \
	_MKPIE_CFLAGS.gcc _MKPIE_LDFLAGS.gcc \
	_FORTIFY_CFLAGS _RELRO_LDFLAGS _STACK_CHECK_CFLAGS \
	_CTF_CFLAGS \
	_GCC_DIR \
	_ALIASES.CC _ALIASES.CPP _ALIASES.CXX _ALIASES.FC \
	_ALIASES.ADA _ALIASES.GMK _ALIASES.GLK _ALIASES.GBD \
	_ALIASES.CHP _ALIASES.PRP _ALIASES.GLS _ALIASES.GNT \
	_COMPILER_ABI_FLAG.32 _COMPILER_ABI_FLAG.64 \
	_COMPILER_ABI_FLAG.n32 _COMPILER_ABI_FLAG.o32 \
	_SSP_CFLAGS \
	_CXX_STD_FLAG.c++03 _CXX_STD_FLAG.gnu++03
_USE_VARS.gcc=	\
	MACHINE_ARCH PATH DRAGONFLY_CCVER OPSYS LOCALBASE \
	USE_LIBTOOL \
	LIBABISUFFIX \
	COMPILER_RPATH_FLAG \
	MACHINE_GNU_PLATFORM \
	WRKDIR MACHINE_PLATFORM PKGPATH \
	_PKGSRC_MKPIE _PKGSRC_MKREPRO _MKREPRO_CFLAGS.gcc \
	_PKGSRC_USE_FORTIFY _PKGSRC_USE_RELRO _PKGSRC_USE_STACK_CHECK \
	_OPSYS_INCLUDE_DIRS _OPSYS_LIB_DIRS
_IGN_VARS.gcc=	\
	_GCC2_PATTERNS _GCC3_PATTERNS _GCC34_PATTERNS _GCC44_PATTERNS \
	_GCC48_PATTERNS _GCC49_PATTERNS _GCC5_PATTERNS _GCC6_PATTERNS \
	_GCC7_PATTERNS _GCC8_PATTERNS _GCC_AUX_PATTERNS
_LISTED_VARS.gcc= \
	MAKEFLAGS IMAKEOPTS LDFLAGS PREPEND_PATH
.include "../../mk/bsd.prefs.mk"

USE_NATIVE_GCC?=	no
USE_PKGSRC_GCC?=	no
USE_PKGSRC_GCC_RUNTIME?=no

GCC_REQD+=	2.8.0

# gcc2 doesn't support c99 and amd64
.if !empty(USE_LANGUAGES:Mc99) || ${MACHINE_ARCH} == "x86_64"
GCC_REQD+=	3.0
.endif

# Only one compiler defined here supports Ada: lang/gcc5-aux
# If the Ada language is requested, force lang/gcc5-aux to be selected
.if !empty(USE_LANGUAGES:Mada)
GCC_REQD+=	20120614
.endif

# _GCC_DIST_VERSION is the highest version of GCC installed by the pkgsrc
# without the PKGREVISIONs.
_GCC_DIST_NAME:=	gcc8
.include "../../lang/${_GCC_DIST_NAME}/version.mk"
_GCC_DIST_VERSION:=	${${_GCC_DIST_NAME:tu}_DIST_VERSION}

# _GCC2_PATTERNS matches N s.t. N <= 2.95.3.
_GCC2_PATTERNS=	[0-1].* 2.[0-9] 2.[0-9].* 2.[1-8][0-9] 2.[1-8][0-9].*	\
		2.9[0-4] 2.9[0-4].* 2.95 2.95.[0-3]

# _GCC3_PATTERNS matches N s.t. 2.95.3 < N < 3.4.
_GCC3_PATTERNS=	2.95.[4-9]* 2.95.[1-9][0-9]* 2.9[6-9] 2.9[6-9].*	\
		2.[1-9][0-9][0-9]* 3.[0-3] 3.[0-3].*

# _GCC34_PATTERNS matches N s.t. 3.4 <= N < 4.
_GCC34_PATTERNS= 3.[4-9] 3.[4-9].* 3.[1-9][0-9]*

# _GCC44_PATTERNS matches N s.t. 4.0 <= N < 4.5.
_GCC44_PATTERNS= 4.[0-4] 4.[0-4].*

# _GCC48_PATTERNS matches N s.t. 4.5 <= N < 4.9.
_GCC48_PATTERNS= 4.[5-8] 4.[5-8].*

# _GCC49_PATTERNS matches N s.t. 4.9 <= N < 4.10.
_GCC49_PATTERNS= 4.9 4.9.*

# _GCC5_PATTERNS matches N s.t. 5.0 <= N < 6.
_GCC5_PATTERNS= 5 5.*

# _GCC6_PATTERNS matches N s.t. 6.0 <= N < 7.
_GCC6_PATTERNS= 6 6.*

# _GCC7_PATTERNS matches N s.t. 7.0 <= N < 8.
_GCC7_PATTERNS= 7 7.*

# _GCC8_PATTERNS matches N s.t. 8.0 <= N < 9.
_GCC8_PATTERNS= 8 8.*

# _GCC_AUX_PATTERNS matches 8-digit date YYYYMMDD*
_GCC_AUX_PATTERNS= 20[1-2][0-9][0-1][0-9][0-3][0-9]*

# Override the default from sys.mk if necessary.
.if ${CC} == cc && ${GCCBASE:U} && !exists(${GCCBASE}/bin/${CC}) && exists(${GCCBASE}/bin/gcc)
CC=	gcc
.endif

# _CC is the full path to the compiler named by ${CC} if it can be found.
.if !defined(_CC)
_CC:=	${CC:[1]}
.  if !empty(GCCBASE) && exists(${GCCBASE}/bin)
_EXTRA_CC_DIRS=	${GCCBASE}/bin
.  endif
.  for _dir_ in ${_EXTRA_CC_DIRS} ${PATH:C/\:/ /g}
.    if empty(_CC:M/*)
.      if exists(${_dir_}/${CC:[1]})
_CC:=	${_dir_}/${CC:[1]}
.      endif
.    endif
.  endfor
.  if empty(USE_CROSS_COMPILE:M[yY][eE][sS])
# Pass along _CC only if we're working on native packages -- don't pass
# the cross-compiler on to submakes for building native packages.
MAKEFLAGS+=	_CC=${_CC:Q}
.  endif
.endif

.if !defined(_GCC_VERSION)
#
# FIXME: Ideally we'd use PKGSRC_SETENV here, but not enough of the tools
# infrastructure is loaded for SETENV to be defined when mk/compiler.mk is
# included first.  LC_ALL is required here for similar reasons, as ALL_ENV
# is not defined at this stage.
#
_GCC_VERSION_STRING!=	\
	( env LC_ALL=C ${_CC} -v 2>&1 | ${GREP} 'gcc version') 2>/dev/null || ${ECHO} 0
.  if !empty(_GCC_VERSION_STRING:Megcs*)
_GCC_VERSION=	2.8.1		# egcs is considered to be gcc-2.8.1.
.  elif !empty(DRAGONFLY_CCVER) && ${OPSYS} == "DragonFly"
_GCC_VERSION!= env CCVER=${DRAGONFLY_CCVER} ${_CC} -dumpversion
.  elif !empty(_GCC_VERSION_STRING:Mgcc*)
_GCC_VERSION!=	${_CC} -dumpversion
.  else
_GCC_VERSION=	0
.  endif
.endif
_GCC_PKG=	gcc-${_GCC_VERSION:C/-.*$//}

.for _version_ in ${_CXX_STD_VERSIONS}
_CXX_STD_FLAG.${_version_}?=	-std=${_version_}
.  if !empty(_GCC_VERSION:M[34].[1234].*)
_CXX_STD_FLAG.c++03=	-std=c++0x
_CXX_STD_FLAG.gnu++03=	-std=gnu++0x
.  endif
.endfor

.if !empty(_CC:M${LOCALBASE}/*)
_IS_BUILTIN_GCC=	NO
GCC_REQD+=		${_GCC_VERSION}
.else
.  if !empty(_CC:M/*)
#
# GCC in older versions of Darwin report "Apple Computer ... based on gcc
# version ...", so we can't just grep for "^gcc".
#
.    if ${_GCC_VERSION} != "0"
_IS_BUILTIN_GCC=	YES
.    else
_IS_BUILTIN_GCC=	NO
.    endif
.  else
_IS_BUILTIN_GCC=	NO
.  endif
.endif

# Distill the GCC_REQD list into a single _GCC_REQD value that is the
# highest version of GCC required.
#
_GCC_STRICTEST_REQD?=	none
.for _version_ in ${GCC_REQD}
.  for _pkg_ in gcc-${_version_}
.    if ${_GCC_STRICTEST_REQD} == "none"
_GCC_PKG_SATISFIES_DEP=		YES
.      for _vers_ in ${GCC_REQD}
.        if !empty(_GCC_PKG_SATISFIES_DEP:M[yY][eE][sS])
_GCC_PKG_SATISFIES_DEP!=	\
	if ${PKG_ADMIN} pmatch 'gcc>=${_vers_}' ${_pkg_} 2>/dev/null; then \
		${ECHO} "YES";						\
	else								\
		${ECHO} "NO";						\
	fi
.        endif
.      endfor
.      if !empty(_GCC_PKG_SATISFIES_DEP:M[yY][eE][sS])
_GCC_STRICTEST_REQD=	${_version_}
.      endif
.    endif
.  endfor
.endfor
_GCC_REQD=	${_GCC_STRICTEST_REQD}

# Determine whether we require GCC-2.x or GCC-3.x by examining _GCC_REQD.
_NEED_GCC2?=	no
.for _pattern_ in ${_GCC2_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC2=	yes
.  endif
.endfor
_NEED_GCC3?=	no
.for _pattern_ in ${_GCC3_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC3=	yes
.  endif
.endfor
_NEED_GCC34?=	no
.for _pattern_ in ${_GCC34_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC34=	yes
.  endif
.endfor
_NEED_GCC44?=	no
.for _pattern_ in ${_GCC44_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC44=	yes
.  endif
.endfor
_NEED_GCC48?=	no
.for _pattern_ in ${_GCC48_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC48=	yes
.  endif
.endfor
_NEED_GCC49?=	no
.for _pattern_ in ${_GCC49_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC49=	yes
.  endif
.endfor
_NEED_GCC5?=	no
.for _pattern_ in ${_GCC5_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC5=	yes
.  endif
.endfor
_NEED_GCC6?=	no
.for _pattern_ in ${_GCC6_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC6=	yes
.  endif
.endfor
_NEED_GCC7?=	no
.for _pattern_ in ${_GCC7_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC7=	yes
.  endif
.endfor
_NEED_GCC8?=	no
.for _pattern_ in ${_GCC8_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC8=	yes
.  endif
.endfor
_NEED_GCC_AUX?=	no
.for _pattern_ in ${_GCC_AUX_PATTERNS}
.  if !empty(_GCC_REQD:M${_pattern_})
_NEED_GCC_AUX=	yes
_NEED_NEWER_GCC=NO
.  endif
.endfor
.if !empty(_NEED_GCC2:M[nN][oO]) && !empty(_NEED_GCC3:M[nN][oO]) && \
    !empty(_NEED_GCC34:M[nN][oO]) && !empty(_NEED_GCC44:M[nN][oO]) && \
    !empty(_NEED_GCC48:M[nN][oO]) && !empty(_NEED_GCC49:M[nN][oO]) && \
    !empty(_NEED_GCC5:M[nN][oO]) && !empty(_NEED_GCC6:M[nN][oO]) && \
    !empty(_NEED_GCC7:M[nN][oO]) && !empty(_NEED_GCC8:M[nN][oO]) && \
    !empty(_NEED_GCC_AUX:M[nN][oO])
_NEED_GCC8=	yes
.endif

# Assume by default that GCC will only provide a C compiler.
LANGUAGES.gcc?=	c
.if !empty(_NEED_GCC2:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran77 objc
.elif !empty(_NEED_GCC3:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran77 java objc
.elif !empty(_NEED_GCC34:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran77 objc
.elif !empty(_NEED_GCC44:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 java objc
.elif !empty(_NEED_GCC48:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 go java objc obj-c++
.elif !empty(_NEED_GCC49:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 go java objc obj-c++
.elif !empty(_NEED_GCC5:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 go java objc obj-c++
.elif !empty(_NEED_GCC6:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 go java objc obj-c++
.elif !empty(_NEED_GCC7:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 go java objc obj-c++
.elif !empty(_NEED_GCC8:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 go java objc obj-c++
.elif !empty(_NEED_GCC_AUX:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran fortran77 objc ada
.endif
_LANGUAGES.gcc=		# empty
.for _lang_ in ${USE_LANGUAGES}
_LANGUAGES.gcc+=	${LANGUAGES.gcc:M${_lang_}}
.endfor

.if !empty(USE_LANGUAGES:Mc99)
_WRAP_EXTRA_ARGS.CC+=	-std=gnu99
CWRAPPERS_APPEND.cc+=	-std=gnu99
.endif

.if ${OPSYS} == "NetBSD"
_MKPIE_CFLAGS.gcc=	-fPIC
# XXX for executables it should be:
#_MKPIE_CFLAGS.gcc=	-fPIE
# XXX for libraries a sink wrapper around gcc is required and used instead
_MKPIE_LDFLAGS.gcc=	-pie
.endif

.if ${_PKGSRC_MKPIE} == "yes"
_GCC_CFLAGS+=		${_MKPIE_CFLAGS.gcc}
#_GCC_LDFLAGS+=		${_MKPIE_LDFLAGS.gcc}
CWRAPPERS_APPEND.cc+=	${_MKPIE_CFLAGS.gcc}
CWRAPPERS_APPEND.cxx+=	${_MKPIE_CFLAGS.gcc}
# this differs for libraries and executables (handled in mk/cwrappers.mk)
# CWRAPPERS_APPEND.ld+=	${_MKPIE_LDFLAGS.gcc}
.endif

.if ${_PKGSRC_MKREPRO} == "yes"
.export WRKDIR
# XXX the dollar sign should not be expanded by the shell
_GCC_CFLAGS+=		-fdebug-prefix-map=$$$$WRKDIR/=
.endif

.if ${_PKGSRC_MKREPRO} == "yes"
_GCC_CFLAGS+=		${_MKREPRO_CFLAGS.gcc}
CWRAPPERS_APPEND.cc+=	${_MKREPRO_CFLAGS.gcc}
.endif

# The user can choose the level of FORTIFY.
.if ${PKGSRC_USE_FORTIFY} == "weak"
_FORTIFY_CFLAGS=	-D_FORTIFY_SOURCE=1
.else
_FORTIFY_CFLAGS=	-D_FORTIFY_SOURCE=2
.endif

.if ${_PKGSRC_USE_FORTIFY} == "yes"
_GCC_CFLAGS+=		${_FORTIFY_CFLAGS}
CWRAPPERS_APPEND.cc+=	${_FORTIFY_CFLAGS}
.endif

# The user can choose the level of RELRO.
.if ${PKGSRC_USE_RELRO} == "partial"
_RELRO_LDFLAGS=		-Wl,-z,relro
.else
_RELRO_LDFLAGS=		-Wl,-z,relro -Wl,-z,now
.endif

_STACK_CHECK_CFLAGS=	-fstack-check

.if ${_PKGSRC_USE_STACK_CHECK} == "yes"
_GCC_CFLAGS+=		${_STACK_CHECK_CFLAGS}
.endif

_CTF_CFLAGS=		-gdwarf-2

# GCC has this annoying behaviour where it advocates in a multi-line
# banner the use of "#include" over "#import" when including headers.
# This generates a huge number of warnings when building practically all
# Objective-C code where it is convention to use "#import".  Suppress
# the warning if we're building Objective-C code using GCC.
#
.if !empty(_LANGUAGES.gcc:Mobjc)
CFLAGS+=	-Wno-import
.endif

CFLAGS+=	${_GCC_CFLAGS}

.if !empty(_NEED_GCC2:M[yY][eE][sS])
#
# We require gcc-2.x in the lang/gcc2 directory.
#
_GCC_PKGBASE=		gcc2
.  if ${PKGPATH} == lang/gcc2
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc2
_GCC_DEPENDENCY=	gcc2>=${_GCC_REQD}:../../lang/gcc2
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mobjc)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC3:M[yY][eE][sS])
#
# We require gcc-3.x in the lang/gcc3-* directories.
#
_GCC_PKGBASE=		gcc3-c
.  if ${PKGPATH} == lang/gcc3-c
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc:Mc)
_GCC_PKGSRCDIR=		../../lang/gcc3-c
_GCC_DEPENDENCY=	gcc3-c>=${_GCC_REQD}:../../lang/gcc3-c
.  endif
.elif !empty(_NEED_GCC34:M[yY][eE][sS])
#
# We require gcc-3.4.x in the lang/gcc34 directory.
#
_GCC_PKGBASE=		gcc34
.  if ${PKGPATH} == lang/gcc34
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc34
_GCC_DEPENDENCY=	gcc34>=${_GCC_REQD}:../../lang/gcc34
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mobjc)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC44:M[yY][eE][sS])
#
# We require gcc-4.4.x in the lang/gcc44 directory.
#
_GCC_PKGBASE=		gcc44
.  if ${PKGPATH} == lang/gcc44
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc44
_GCC_DEPENDENCY=	gcc44>=${_GCC_REQD}:../../lang/gcc44
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mobjc)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC48:M[yY][eE][sS])
#
# We require gcc-4.8.x in the lang/gcc48 directory.
#
_GCC_PKGBASE=		gcc48
.  if ${PKGPATH} == lang/gcc48
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc48
_GCC_DEPENDENCY=	gcc48>=${_GCC_REQD}:../../lang/gcc48
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mgo) || \
        !empty(_LANGUAGES.gcc:Mobjc) || \
        !empty(_LANGUAGES.gcc:Mobj-c++)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC49:M[yY][eE][sS])
#
# We require gcc-4.9.x in the lang/gcc49-* directory.
#
_GCC_PKGBASE=		gcc49
.  if ${PKGPATH} == lang/gcc49
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc49
_GCC_DEPENDENCY=	gcc49>=${_GCC_REQD}:../../lang/gcc49
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mgo) || \
        !empty(_LANGUAGES.gcc:Mobjc) || \
        !empty(_LANGUAGES.gcc:Mobj-c++)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC5:M[yY][eE][sS])
#
# We require gcc-5.x in the lang/gcc5-* directory.
#
_GCC_PKGBASE=		gcc5
.  if ${PKGPATH} == lang/gcc5
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc5
_GCC_DEPENDENCY=	gcc5>=${_GCC_REQD}:../../lang/gcc5
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mgo) || \
        !empty(_LANGUAGES.gcc:Mobjc) || \
        !empty(_LANGUAGES.gcc:Mobj-c++)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC6:M[yY][eE][sS])
#
# We require gcc-6.x in the lang/gcc6-* directory.
#
_GCC_PKGBASE=		gcc6
.  if ${PKGPATH} == lang/gcc6
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc6
_GCC_DEPENDENCY=	gcc6>=${_GCC_REQD}:../../lang/gcc6
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mgo) || \
        !empty(_LANGUAGES.gcc:Mobjc) || \
        !empty(_LANGUAGES.gcc:Mobj-c++)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC7:M[yY][eE][sS])
#
# We require gcc-7.x in the lang/gcc7-* directory.
#
_GCC_PKGBASE=		gcc7
.  if ${PKGPATH} == lang/gcc7
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc7
_GCC_DEPENDENCY=	gcc7>=${_GCC_REQD}:../../lang/gcc7
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mgo) || \
        !empty(_LANGUAGES.gcc:Mobjc) || \
        !empty(_LANGUAGES.gcc:Mobj-c++)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC8:M[yY][eE][sS])
#
# We require gcc-8.x in the lang/gcc8-* directory.
#
_GCC_PKGBASE=		gcc8
.  if ${PKGPATH} == lang/gcc8
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc8
_GCC_DEPENDENCY=	gcc8>=${_GCC_REQD}:../../lang/gcc8
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mgo) || \
        !empty(_LANGUAGES.gcc:Mobjc) || \
        !empty(_LANGUAGES.gcc:Mobj-c++)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC_AUX:M[yY][eE][sS])
#
# We require Ada-capable compiler in the lang/gcc5-aux directory.
#
_GCC_PKGBASE=		gcc5-aux
.  if ${PKGPATH} == lang/gcc5-aux
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc5-aux
_GCC_DEPENDENCY=	gcc5-aux>=${_GCC_REQD}:../../lang/gcc5-aux
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mfortran77) || \
        !empty(_LANGUAGES.gcc:Mada) || \
        !empty(_LANGUAGES.gcc:Mobjc)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.endif
_GCC_DEPENDS=		${_GCC_PKGBASE}>=${_GCC_REQD}

.if !empty(_NEED_GCC3:M[yY][eE][sS])
.  if ${PKGPATH} == "lang/gcc3-c++"
_IGNORE_GCC3CXX=	yes
MAKEFLAGS+=		_IGNORE_GCC3CXX=yes
.  endif
.  if !defined(_IGNORE_GCC3CXX) && !empty(_LANGUAGES.gcc:Mc++)
_GCC_PKGSRCDIR+=	../../lang/gcc3-c++
_GCC_DEPENDENCY+=	gcc3-c++>=${_GCC_REQD}:../../lang/gcc3-c++
_USE_GCC_SHLIB?=	yes
.  endif
.  if ${PKGPATH} == lang/gcc3-f77
_IGNORE_GCC3F77=	yes
MAKEFLAGS+=		_IGNORE_GCC3F77=yes
.  endif
.  if !defined(_IGNORE_GCC3F77) && !empty(_LANGUAGES.gcc:Mfortran77)
_GCC_PKGSRCDIR+=	../../lang/gcc3-f77
_GCC_DEPENDENCY+=	gcc3-f77>=${_GCC_REQD}:../../lang/gcc3-f77
_USE_GCC_SHLIB?=	yes
.  endif
.  if ${PKGPATH} == lang/gcc3-objc
_IGNORE_GCC3OBJC=	yes
MAKEFLAGS+=		_IGNORE_GCC3OBJC=yes
.  endif
.  if !defined(_IGNORE_GCC3OBJC) && !empty(_LANGUAGES.gcc:Mobjc)
_GCC_PKGSRCDIR+=	../../lang/gcc3-objc
_GCC_DEPENDENCY+=	gcc3-objc>=${_GCC_REQD}:../../lang/gcc3-objc
_USE_GCC_SHLIB?=	yes
.  endif
.endif

# When not using the GNU linker, gcc will always link shared libraries against
# the shared version of libgcc, and so _USE_GCC_SHLIB needs to be enabled on
# platforms with non-GNU linkers, such as SunOS.
#
# However, we cannot simply do this by default as it will create circular
# dependencies in packages which are required to build gcc itself, and so we
# enable it based on USE_LIBTOOL for the majority of packages, and support
# USE_GCC_RUNTIME for packages which create shared libraries but do not use
# libtool to do so.
#
.if (${OPSYS} == "Darwin" || ${OPSYS} == "SunOS") && \
    (defined(USE_LIBTOOL) || defined(USE_GCC_RUNTIME))
_USE_GCC_SHLIB= yes
.endif

.if !empty(USE_NATIVE_GCC:M[yY][eE][sS]) && !empty(_IS_BUILTIN_GCC:M[yY][eE][sS])
_USE_PKGSRC_GCC=	no
.elif !empty(USE_PKGSRC_GCC:M[yY][eE][sS])
# For environments where there is an external gcc too, but pkgsrc
# should use the pkgsrc one for consistency.
_USE_PKGSRC_GCC=	yes
.endif

.if defined(_IGNORE_GCC)
_USE_PKGSRC_GCC=	NO
.endif

.if !defined(_USE_PKGSRC_GCC)
_USE_PKGSRC_GCC=	YES
.  if !empty(_IS_BUILTIN_GCC:M[yY][eE][sS])
_GCC_TEST_DEPENDS=	gcc>=${_GCC_REQD}
_USE_PKGSRC_GCC!=	\
	if ${PKG_ADMIN} pmatch '${_GCC_TEST_DEPENDS}' ${_GCC_PKG} 2>/dev/null; then \
		${ECHO} "NO";						\
	else								\
		${ECHO} "YES";						\
	fi
.  endif
.endif

# Check if any of the versions of GCC in pkgsrc can satisfy the _GCC_REQD
# requirement.
#
.if !defined(_NEED_NEWER_GCC)
_PKGSRC_GCC_VERSION=	${_GCC_PKGBASE}-${_GCC_DIST_VERSION}
_NEED_NEWER_GCC!=	\
	if ${PKG_ADMIN} pmatch '${_GCC_DEPENDS}' ${_PKGSRC_GCC_VERSION} 2>/dev/null; then \
		${ECHO} "NO";						\
	else								\
		${ECHO} "YES";						\
	fi
#MAKEFLAGS+=	_NEED_NEWER_GCC=${_NEED_NEWER_GCC}
.endif
.if !empty(_USE_PKGSRC_GCC:M[yY][eE][sS]) && \
    !empty(_NEED_NEWER_GCC:M[yY][eE][sS])
PKG_FAIL_REASON+=	"Unable to satisfy dependency: ${_GCC_DEPENDS}"
.endif

# GNU ld option used to set the rpath
_LINKER_RPATH_FLAG=	-R

# GCC passes rpath directives to the linker using "-Wl,-R".
_COMPILER_RPATH_FLAG=	-Wl,${_LINKER_RPATH_FLAG}

.if !empty(_USE_PKGSRC_GCC:M[yY][eE][sS])
#
# Ensure that the correct rpath is passed to the linker if we need to
# link against gcc shared libs.
#
_GCC_SUBPREFIX!=	\
	if ${PKG_INFO} -qe ${_GCC_PKGBASE}; then			\
		${PKG_INFO} -f ${_GCC_PKGBASE} |			\
		${GREP} "File:.*bin/gcc" |				\
		${GREP} -v "/gcc[0-9][0-9]*-.*" |			\
		${SED} -e "s/.*File: *//;s/bin\/gcc.*//;q";		\
	else								\
		case ${_CC} in						\
		${LOCALBASE}/*)						\
			subprefix="${_CC:H:S/\/bin$//:S/${LOCALBASE}\///:S/${LOCALBASE}//}"; \
			case "$${subprefix}" in				\
			"")	${ECHO} "$${subprefix}" ;;		\
			*)	${ECHO} "$${subprefix}/" ;;		\
			esac;						\
			;;						\
		*)							\
			${ECHO} "_GCC_SUBPREFIX_not_found/";		\
			;;						\
		esac;							\
	fi
_GCC_PREFIX=		${LOCALBASE}/${_GCC_SUBPREFIX}
_GCC_ARCHDIR!=		\
	if [ -x ${_GCC_PREFIX}bin/gcc ]; then				\
		${DIRNAME} `${_GCC_PREFIX}bin/gcc -print-libgcc-file-name 2>/dev/null`; \
	else								\
		${ECHO} "_GCC_ARCHDIR_not_found";			\
	fi
_GCC_LIBDIRS=	${_GCC_ARCHDIR}
.  if empty(USE_PKGSRC_GCC_RUNTIME:M[Yy][Ee][Ss])
_GCC_LIBDIRS+=	${_GCC_PREFIX}lib${LIBABISUFFIX}
.  endif
_GCC_LDFLAGS=	# empty
.  for _dir_ in ${_GCC_LIBDIRS:N*not_found*}
_GCC_LDFLAGS+=	-L${_dir_} ${COMPILER_RPATH_FLAG}${_dir_}
.  endfor
.endif

.if ${_PKGSRC_USE_RELRO} == "yes"
_GCC_LDFLAGS+=		${_RELRO_LDFLAGS}
CWRAPPERS_APPEND.ld+=	${_RELRO_LDFLAGS}
.endif

LDFLAGS+=	${_GCC_LDFLAGS}

# Point the variables that specify the compiler to the installed
# GCC executables.
#
_GCC_DIR=	${WRKDIR}/.gcc
_GCC_VARS=	# empty

.if !empty(_USE_PKGSRC_GCC:M[yY][eE][sS])
_GCCBINDIR=	${_GCC_PREFIX}bin
.elif !empty(_IS_BUILTIN_GCC:M[yY][eE][sS])
_GCCBINDIR=	${_CC:H}
.endif
.if !empty(USE_CROSS_COMPILE:M[yY][eE][sS])
_GCC_BIN_PREFIX=	${MACHINE_GNU_PLATFORM}-
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}gcc${GCC_VERSION_SUFFIX})
_GCC_VARS+=	CC
_GCC_CC=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gcc${GCC_VERSION_SUFFIX}
_ALIASES.CC=	cc gcc
CCPATH=		${_GCCBINDIR}/${_GCC_BIN_PREFIX}gcc${GCC_VERSION_SUFFIX}
PKG_CC:=	${_GCC_CC}
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}cpp${GCC_VERSION_SUFFIX})
_GCC_VARS+=	CPP
_GCC_CPP=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}cpp${GCC_VERSION_SUFFIX}
_ALIASES.CPP=	cpp
CPPPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}cpp${GCC_VERSION_SUFFIX}
PKG_CPP:=	${_GCC_CPP}
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}g++${GCC_VERSION_SUFFIX})
_GCC_VARS+=	CXX
_GCC_CXX=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}g++${GCC_VERSION_SUFFIX}
_ALIASES.CXX=	c++ g++
CXXPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}g++${GCC_VERSION_SUFFIX}
PKG_CXX:=	${_GCC_CXX}
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}g77${GCC_VERSION_SUFFIX})
_GCC_VARS+=	FC
_GCC_FC=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}g77${GCC_VERSION_SUFFIX}
_ALIASES.FC=	f77 g77
FC=		g77
FCPATH=		${_GCCBINDIR}/${_GCC_BIN_PREFIX}g77${GCC_VERSION_SUFFIX}
F77PATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}g77${GCC_VERSION_SUFFIX}
PKG_FC:=	${_GCC_FC}
PKGSRC_FORTRAN?=	g77
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}gfortran${GCC_VERSION_SUFFIX})
_GCC_VARS+=	FC
_GCC_FC=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gfortran${GCC_VERSION_SUFFIX}
_ALIASES.FC=	gfortran
FC=		gfortran
FCPATH=		${_GCCBINDIR}/${_GCC_BIN_PREFIX}gfortran${GCC_VERSION_SUFFIX}
F77PATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gfortran${GCC_VERSION_SUFFIX}
PKG_FC:=	${_GCC_FC}
PKGSRC_FORTRAN?=	gfortran
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}ada)
_GCC_VARS+=	ADA GMK GLK GBD CHP PRP GLS GNT
_GCC_ADA=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}ada
_GCC_GMK=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gnatmake
_GCC_GLK=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gnatlink
_GCC_GBD=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gnatbind
_GCC_CHP=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gnatchop
_GCC_PRP=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gnatprep
_GCC_GLS=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gnatls
_GCC_GNT=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gnat
_ALIASES.ADA=	ada
_ALIASES.GMK=	gnatmake
_ALIASES.GLK=	gnatlink
_ALIASES.GBD=	gnatbind
_ALIASES.CHP=	gnatchop
_ALIASES.PRP=	gnatprep
_ALIASES.GLS=	gnatls
_ALIASES.GNT=	gnat
ADAPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}ada
GMKPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gnatmake
GLKPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gnatlink
GBDPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gnatbind
CHPPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gnatchop
PRPPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gnatprep
GLSPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gnatls
GNTPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}gnat
PKG_ADA:=	${_GCC_ADA}
PKG_GMK:=	${_GCC_GMK}
PKG_GLK:=	${_GCC_GLK}
PKG_GBD:=	${_GCC_GBD}
PKG_CHP:=	${_GCC_CHP}
PKG_PRP:=	${_GCC_PRP}
PKG_GLS:=	${_GCC_GLS}
PKG_GNT:=	${_GCC_GNT}
PKGSRC_ADA?=	ada
PKGSRC_GMK?=	gnatmake
PKGSRC_GLK?=	gnatlink
PKGSRC_GBD?=	gnatbind
PKGSRC_CHP?=	gnatchop
PKGSRC_PRP?=	gnatprep
PKGSRC_GLS?=	gnatls
PKGSRC_GNT?=	gnat
.endif
_COMPILER_STRIP_VARS+=	${_GCC_VARS}

# Pass the required flags to imake to tell it we're using gcc on Solaris.
.if ${OPSYS} == "SunOS"
IMAKEOPTS+=	-DHasGcc2=YES -DHasGcc2ForCplusplus=YES
.endif

.if ${OPSYS} == "AIX"
# On AIX the GCC toolchain recognizes -maix32 and -maix64,
# -m32 or -m64 are not recognized.
_COMPILER_ABI_FLAG.32=	-maix32
_COMPILER_ABI_FLAG.64=	-maix64
# On HP-UX the GCC toolchain must be specifically targeted to an ABI,
# -m32 or -m64 are not recognized.
.elif ${OPSYS} == "HPUX"
_COMPILER_ABI_FLAG.32=	# empty
_COMPILER_ABI_FLAG.64=	# empty
.elif !empty(MACHINE_ARCH:Mmips*)
_COMPILER_ABI_FLAG.32=	-mabi=n32	# ABI == "32" == "n32"
_COMPILER_ABI_FLAG.n32=	-mabi=n32
_COMPILER_ABI_FLAG.o32=	-mabi=32
_COMPILER_ABI_FLAG.64=	-mabi=64
.elif !empty(MACHINE_ARCH:Maarch64*)
_COMPILER_ABI_FLAG.32=	-m32
_COMPILER_ABI_FLAG.64=	# empty
.else
_COMPILER_ABI_FLAG.32=	-m32
_COMPILER_ABI_FLAG.64=	-m64
.endif

.if !empty(_USE_PKGSRC_GCC:M[yY][eE][sS])
.  if exists(${CCPATH})
CC_VERSION_STRING!=	${CCPATH} -v 2>&1
CC_VERSION!=		\
	if ${CCPATH} -dumpversion > /dev/null 2>&1; then		\
		${ECHO} "gcc-`${CCPATH} -dumpversion`";			\
	else								\
		${ECHO} "gcc-${_GCC_REQD}";				\
	fi

.  else
CC_VERSION_STRING=	${CC_VERSION}
CC_VERSION=		gcc-${_GCC_REQD}
.  endif
.else
CC_VERSION_STRING=	${CC_VERSION}
CC_VERSION=		${_GCC_PKG}
.endif

# The user can choose the level of stack smashing protection.
.if !empty(CC_VERSION:Mgcc-[4-9]*)
.  if ${PKGSRC_USE_SSP} == "all"
_SSP_CFLAGS=		-fstack-protector-all
.  elif ${PKGSRC_USE_SSP} == "strong"
_SSP_CFLAGS=		-fstack-protector-strong
.  else
_SSP_CFLAGS=		-fstack-protector
.  endif
.endif

# Prepend the path to the compiler to the PATH.
.if !empty(_LANGUAGES.gcc)
PREPEND_PATH+=	${_GCC_DIR}/bin
.endif

# Add the dependency on GCC.
.if !empty(_USE_PKGSRC_GCC:M[yY][eE][sS])
.  for _dir_ in ${_GCC_PKGSRCDIR}
.    include "${_dir_}/buildlink3.mk"
.  endfor
.endif

# Add dependency on GCC libraries if requested.
.if (defined(_USE_GCC_SHLIB) && !empty(_USE_GCC_SHLIB:M[Yy][Ee][Ss])) && !empty(USE_PKGSRC_GCC_RUNTIME:M[Yy][Ee][Ss])
#  Special case packages which are themselves a dependency of gcc runtime.
.  if ${PKGPATH} != devel/libtool-base && ${PKGPATH} != devel/binutils && \
      empty(PKGPATH:Mlang/gcc4?) && empty(PKGPATH:Mlang/gcc[5-9])
.    if !empty(_GCC_PKGBASE:Mgcc48)
.      include "../../lang/gcc48-libs/buildlink3.mk"
.    elif !empty(_GCC_PKGBASE:Mgcc49)
.      include "../../lang/gcc49-libs/buildlink3.mk"
.    elif !empty(_GCC_PKGBASE:Mgcc5)
.      include "../../lang/gcc5-libs/buildlink3.mk"
.    elif !empty(_GCC_PKGBASE:Mgcc6)
.      include "../../lang/gcc6-libs/buildlink3.mk"
.    elif !empty(_GCC_PKGBASE:Mgcc7)
.      include "../../lang/gcc7-libs/buildlink3.mk"
.    elif !empty(_GCC_PKGBASE:Mgcc8)
.      include "../../lang/gcc8-libs/buildlink3.mk"
.    else
PKG_FAIL_REASON+=	"No USE_PKGSRC_GCC_RUNTIME support for ${CC_VERSION}"
.    endif
.  endif
.endif

.for _var_ in ${_GCC_VARS}
.  if !target(${_GCC_${_var_}})
override-tools: ${_GCC_${_var_}}
${_GCC_${_var_}}:
	${RUN}${MKDIR} ${.TARGET:H}
.    if !empty(COMPILER_USE_SYMLINKS:M[Yy][Ee][Ss])
	${RUN}${RM} -f ${.TARGET}
	${RUN}${LN} -s ${_GCCBINDIR}/${.TARGET:T} ${.TARGET}
.    else
	${RUN}					\
	(${ECHO} '#!${TOOLS_SHELL}';					\
	 ${ECHO} 'exec ${_GCCBINDIR}/${.TARGET:T} "$$@"';		\
	) > ${.TARGET}
	${RUN}${CHMOD} +x ${.TARGET}
.    endif
.    for _alias_ in ${_ALIASES.${_var_}:S/^/${.TARGET:H}\//}
	${RUN}					\
	if [ ! -x "${_alias_}" ]; then					\
		${LN} -f -s ${.TARGET:T} ${_alias_};			\
	fi
.    endfor
.  endif
.endfor

# On systems without a Fortran compiler, pull one in if needed.
# The default is g95 as it supports a modern dialect, but it can
# be overridden in mk.conf to use only f2c.
#
PKGSRC_FORTRAN?=g95

_GCC_NEEDS_A_FORTRAN=	no
.if empty(_USE_PKGSRC_GCC:M[yY][eE][sS]) && !exists(${FCPATH})
_GCC_NEEDS_A_FORTRAN=	yes
.else
.  for _pattern_ in 0.* 1.[0-4] 1.[0-4].*
.    if !empty(MACHINE_PLATFORM:MNetBSD-${_pattern_}-*)
_GCC_NEEDS_A_FORTRAN=	yes
.    endif
.  endfor
.endif
.if !empty(_GCC_NEEDS_A_FORTRAN:M[yY][eE][sS])
.  include "../../mk/compiler/${PKGSRC_FORTRAN}.mk"
.endif

.if ${OPSYS} == "Interix" && !empty(_GCCBINDIR:M/opt/gcc.*)
COMPILER_INCLUDE_DIRS=	${_GCCBINDIR:H}/include ${_OPSYS_INCLUDE_DIRS}
COMPILER_LIB_DIRS=	${_GCCBINDIR:H}/lib ${_OPSYS_LIB_DIRS}
.endif

.endif	# COMPILER_GCC_MK