# $NetBSD: gcc.mk,v 1.93 2008/02/07 20:59:05 rillig Exp $
#
# This is the compiler definition for the GNU Compiler Collection.
#

.if !defined(COMPILER_GCC_MK)
COMPILER_GCC_MK=	defined

.include "../../mk/bsd.prefs.mk"

USE_NATIVE_GCC?=	no

GCC_REQD+=	2.8.0

# gcc2 doesn't support c99
.if !empty(USE_LANGUAGES:Mc99)
GCC_REQD+=	3.0
.endif

# _GCC_DIST_VERSION is the highest version of GCC installed by the pkgsrc
# without the PKGREVISIONs.
#
_GCC_DIST_VERSION=	3.4.6

# _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.
_GCC34_PATTERNS= 3.[4-9] 3.[4-9].* 3.[1-9][0-9]* [4-9]*

# _CC is the full path to the compiler named by ${CC} if it can be found.
.if !defined(_CC)
_CC:=	${CC:C/^/_asdf_/1:M_asdf_*:S/^_asdf_//}
.  for _dir_ in ${PATH:C/\:/ /g}
.    if empty(_CC:M/*)
.      if exists(${_dir_}/${CC:C/^/_asdf_/1:M_asdf_*:S/^_asdf_//})
_CC:=	${_dir_}/${CC:C/^/_asdf_/1:M_asdf_*:S/^_asdf_//}
.      endif
.    endif
.  endfor
MAKEFLAGS+=	_CC=${_CC:Q}
.endif

.if !defined(_GCC_VERSION)
_GCC_VERSION_STRING!=	\
	( ${SETENV} ${ALL_ENV} ${_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(_GCC_VERSION_STRING:Mgcc*)
_GCC_VERSION!=	${_CC} -dumpversion
.  else
_GCC_VERSION=	0
.  endif
.endif
_GCC_PKG=	gcc-${_GCC_VERSION}

.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
.if !empty(_NEED_GCC2:M[nN][oO]) && !empty(_NEED_GCC3:M[nN][oO]) && \
    !empty(_NEED_GCC34:M[nN][oO])
_NEED_GCC3=	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++ fortran objc
.elif !empty(_NEED_GCC3:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran java objc
.elif !empty(_NEED_GCC34:M[yY][eE][sS])
LANGUAGES.gcc=	c c++ fortran objc
.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
.endif

# 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

.if !empty(_NEED_GCC2:M[yY][eE][sS])
#
# We require gcc-2.x in the lang/gcc directory.
#
_GCC_PKGBASE=		gcc
.  if !empty(PKGPATH:Mlang/gcc)
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc)
_GCC_PKGSRCDIR=		../../lang/gcc
_GCC_DEPENDENCY=	gcc>=${_GCC_REQD}:../../lang/gcc
.    if !empty(_LANGUAGES.gcc:Mc++) || \
        !empty(_LANGUAGES.gcc:Mfortran) || \
        !empty(_LANGUAGES.gcc:Mobjc)
_USE_GCC_SHLIB?=	yes
.    endif
.  endif
.elif !empty(_NEED_GCC3:M[yY][eE][sS])
#
# We require gcc-3.x in the lang/gcc3-* directories.
#
_GCC_PKGBASE=		gcc3-c
.  if !empty(PKGPATH:Mlang/gcc3-c)
_IGNORE_GCC=		yes
MAKEFLAGS+=		_IGNORE_GCC=yes
.  endif
.  if !defined(_IGNORE_GCC) && !empty(_LANGUAGES.gcc:Mc)
_GCC_PKGSRCDIR=		../../lang/gcc3-c
_GCC_DEPENDENCY=	gcc3-c>=${_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 !empty(PKGPATH:Mlang/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:Mfortran) || \
        !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 !empty(PKGPATH:Mlang/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++>=${_GCC_REQD}:../../lang/gcc3-c++
_USE_GCC_SHLIB?=	yes
.  endif
.  if !empty(PKGPATH:Mlang/gcc3-f77)
_IGNORE_GCC3F77=	yes
MAKEFLAGS+=		_IGNORE_GCC3F77=yes
.  endif
.  if !defined(_IGNORE_GCC3F77) && !empty(_LANGUAGES.gcc:Mfortran)
_GCC_PKGSRCDIR+=	../../lang/gcc3-f77
_GCC_DEPENDENCY+=	gcc3-f77>=${_GCC_REQD}:../../lang/gcc3-f77
_USE_GCC_SHLIB?=	yes
.  endif
.  if !empty(PKGPATH:Mlang/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

.if !empty(USE_NATIVE_GCC:M[yY][eE][sS])
_USE_PKGSRC_GCC=	no
.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(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

.  if defined(ABI) && !empty(ABI)
MABIFLAG=	${_COMPILER_ABI_FLAG.${ABI}}
.  endif
.endif

.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" |				\
		${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 ${MABIFLAG} -print-libgcc-file-name 2>/dev/null`; \
	else								\
		${ECHO} "_GCC_ARCHDIR_not_found";			\
	fi
.  if empty(_GCC_ARCHDIR:M*not_found*)
.    if defined(MABIFLAG) && !empty(MABIFLAG)
_GCC_PREFIX:=		${_GCC_ARCHDIR:H:H:H:H:H}/
_GCC_SUBPREFIX:=	${_GCC_ARCHDIR:H:H:H:H:H:T}/
.    else
_GCC_PREFIX:=		${_GCC_ARCHDIR:H:H:H:H}/
_GCC_SUBPREFIX:=	${_GCC_ARCHDIR:H:H:H:H:T}/
.    endif
.  endif
_GCC_LIBDIRS=	${_GCC_ARCHDIR} ${_GCC_PREFIX}lib
_GCC_LDFLAGS=	# empty
.  for _dir_ in ${_GCC_LIBDIRS:N*not_found*}
_GCC_LDFLAGS+=	-L${_dir_} ${COMPILER_RPATH_FLAG}${_dir_}
.  endfor
LDFLAGS+=	${_GCC_LDFLAGS}
.endif

# 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_VARS+=	CC
_GCC_CC=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}gcc
_ALIASES.CC=	cc gcc
CCPATH=		${_GCCBINDIR}/${_GCC_BIN_PREFIX}gcc
PKG_CC:=	${_GCC_CC}
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}cpp)
_GCC_VARS+=	CPP
_GCC_CPP=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}cpp
_ALIASES.CPP=	cpp
CPPPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}cpp
PKG_CPP:=	${_GCC_CPP}
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}g++)
_GCC_VARS+=	CXX
_GCC_CXX=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}g++
_ALIASES.CXX=	c++ g++
CXXPATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}g++
PKG_CXX:=	${_GCC_CXX}
.endif
.if exists(${_GCCBINDIR}/${_GCC_BIN_PREFIX}g77)
_GCC_VARS+=	FC
_GCC_FC=	${_GCC_DIR}/bin/${_GCC_BIN_PREFIX}g77
_ALIASES.FC=	f77 g77
FCPATH=		${_GCCBINDIR}/${_GCC_BIN_PREFIX}g77
F77PATH=	${_GCCBINDIR}/${_GCC_BIN_PREFIX}g77
PKG_FC:=	${_GCC_FC}
.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} == "SunOS"
_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

# 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

# Create compiler driver scripts in ${WRKDIR}.
GCC_USE_SYMLINKS?=	no
.for _var_ in ${_GCC_VARS}
.  if !target(${_GCC_${_var_}})
override-tools: ${_GCC_${_var_}}
${_GCC_${_var_}}:
	${RUN}${MKDIR} ${.TARGET:H}
.    if !empty(GCC_USE_SYMLINKS:Myes)
	${RUN}${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 older NetBSD systems and where the Fortran compiler doesn't exist,
# force the use of f2c-f77.
#
_GCC_USE_F2C=	no
.if !exists(${FCPATH})
_GCC_USE_F2C=	yes
.else
.  for _pattern_ in 0.* 1.[0-4] 1.[0-4].*
.    if !empty(MACHINE_PLATFORM:MNetBSD-${_pattern_}-*)
_GCC_USE_F2C=	yes
.    endif
.  endfor
.endif
.if !empty(_GCC_USE_F2C:M[yY][eE][sS])
.  include "../../mk/compiler/f2c.mk"
.endif

.endif	# COMPILER_GCC_MK