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# $NetBSD: compiler.mk,v 1.70 2009/07/08 21:17:16 markd Exp $
#
# This Makefile fragment implements handling for supported C/C++/Fortran
# compilers.
#
# The following variables may be set by the pkgsrc user in mk.conf:
#
# PKGSRC_COMPILER
# A list of values specifying the chain of compilers to be used by
# pkgsrc to build packages.
#
# Valid values are:
# ccc Compaq C Compilers (Tru64)
# ccache compiler cache (chainable)
# distcc distributed C/C++ (chainable)
# f2c Fortran 77 to C compiler (chainable)
# icc Intel C++ Compiler (Linux)
# ido SGI IRIS Development Option cc (IRIX 5)
# gcc GNU
# hp HP-UX C/aC++ compilers
# mipspro Silicon Graphics, Inc. MIPSpro (n32/n64)
# mipspro-ucode Silicon Graphics, Inc. MIPSpro (o32)
# pcc Portable C Compiler
# sunpro Sun Microsystems, Inc. WorkShip/Forte/Sun
# ONE Studio
# xlc IBM's XL C/C++ compiler suite (Darwin/MacOSX)
#
# The default is "gcc". You can use ccache and/or distcc with
# an appropriate PKGSRC_COMPILER setting, e.g. "ccache distcc
# gcc". You can also use "f2c" to overlay the lang/f2c package
# over the C compiler instead of using the system Fortran
# compiler. The chain should always end in a real compiler.
# This should only be set in /etc/mk.conf.
#
# USE_PKGSRC_GCC
# Force using the appropriate version of GCC from pkgsrc based on
# GCC_REQD instead of the native compiler.
#
# This should be disabled only for debugging.
#
# COMPILER_USE_SYMLINKS
# If set to yes, use symlinks for the compiler drivers, otherwise
# shell scripts are created. The default is yes.
#
# The following variables may be set by a package:
#
# GCC_REQD
# A list of version numbers used to determine the minimum
# version of GCC required by a package. This value should only
# be appended to by a package Makefile.
#
# NOTE: Be conservative when setting GCC_REQD, as lang/gcc3 is
# known not to build on some platforms, e.g. Darwin. If gcc3 is
# required, set GCC_REQD=3.0 so that we do not try to pull in
# lang/gcc3 unnecessarily and have it fail.
#
# USE_LANGUAGES
# Lists the languages used in the source code of the package,
# and is used to determine the correct compilers to install.
# Valid values are: c, c99, c++, fortran, java, objc. The
# default is "c".
#
# The following variables are defined, and available for testing in
# package Makefiles:
#
# CC_VERSION
# The compiler and version being used, e.g.,
#
# .include "../../mk/compiler.mk"
#
# .if !empty(CC_VERSION:Mgcc-3*)
# ...
# .endif
#
# Keywords: compiler

.if !defined(BSD_COMPILER_MK)
BSD_COMPILER_MK= defined

_VARGROUPS+= compiler
_USER_VARS.compiler= PKGSRC_COMPILER USE_PKGSRC_GCC ABI COMPILER_USE_SYMLINKS
_PKG_VARS.compiler= USE_LANGUAGES GCC_REQD NOT_FOR_COMPILER ONLY_FOR_COMPILER
_SYS_VARS.compiler= CC_VERSION

.include "bsd.fast.prefs.mk"

# Since most packages need a C compiler, this is the default value.
USE_LANGUAGES?= c

# Add c support if c99 is set
.if !empty(USE_LANGUAGES:Mc99)
USE_LANGUAGES+= c
.endif

COMPILER_USE_SYMLINKS?= yes

# For environments where there is an external gcc too, but pkgsrc
# should use the pkgsrc one for consistency.
#
.if defined(USE_PKGSRC_GCC)
_USE_PKGSRC_GCC= yes
.endif

_COMPILERS= ccc gcc icc ido mipspro mipspro-ucode sunpro xlc hp pcc
_PSEUDO_COMPILERS= ccache distcc f2c g95

.if defined(NOT_FOR_COMPILER) && !empty(NOT_FOR_COMPILER)
. for _compiler_ in ${_COMPILERS}
. if ${NOT_FOR_COMPILER:M${_compiler_}} == ""
_ACCEPTABLE_COMPILERS+= ${_compiler_}
. endif
. endfor
.elif defined(ONLY_FOR_COMPILER) && !empty(ONLY_FOR_COMPILER)
. for _compiler_ in ${_COMPILERS}
. if ${ONLY_FOR_COMPILER:M${_compiler_}} != ""
_ACCEPTABLE_COMPILERS+= ${_compiler_}
. endif
. endfor
.else
_ACCEPTABLE_COMPILERS+= ${_COMPILERS}
.endif

.if defined(_ACCEPTABLE_COMPILERS)
. for _acceptable_ in ${_ACCEPTABLE_COMPILERS}
. for _compiler_ in ${PKGSRC_COMPILER}
. if !empty(_ACCEPTABLE_COMPILERS:M${_compiler_}) && !defined(_COMPILER)
_COMPILER= ${_compiler_}
. endif
. endfor
. endfor
.endif

.if !defined(_COMPILER)
PKG_FAIL_REASON+= "No acceptable compiler found for ${PKGNAME}."
.endif

.for _compiler_ in ${PKGSRC_COMPILER}
. if !empty(_PSEUDO_COMPILERS:M${_compiler_})
_PKGSRC_COMPILER:= ${_compiler_} ${_PKGSRC_COMPILER}
. endif
.endfor
_PKGSRC_COMPILER:= ${_COMPILER} ${_PKGSRC_COMPILER}

_COMPILER_STRIP_VARS= # empty

.for _compiler_ in ${_PKGSRC_COMPILER}
. include "compiler/${_compiler_}.mk"
.endfor
.undef _compiler_

.if !defined(PKG_CPP)
PKG_CPP:=${CPP}
.endif

# Strip the leading paths from the toolchain variables since we manipulate
# the PATH to use the correct executable.
#
.for _var_ in ${_COMPILER_STRIP_VARS}
. if empty(${_var_}:C/^/_asdf_/1:N_asdf_*)
${_var_}:= ${${_var_}:C/^/_asdf_/1:M_asdf_*:S/^_asdf_//:T}
. else
${_var_}:= ${${_var_}:C/^/_asdf_/1:M_asdf_*:S/^_asdf_//:T} ${${_var_}:C/^/_asdf_/1:N_asdf_*}
. endif
.endfor

.if defined(ABI) && !empty(ABI)
_WRAP_EXTRA_ARGS.CC+= ${_COMPILER_ABI_FLAG.${ABI}}
_WRAP_EXTRA_ARGS.CXX+= ${_COMPILER_ABI_FLAG.${ABI}}
_WRAP_EXTRA_ARGS.LD+= ${_LINKER_ABI_FLAG.${ABI}}
.endif

# If the languages are not requested, force them not to be available
# in the generated wrappers.
#
_FAIL_WRAPPER.CC= ${WRKDIR}/.compiler/bin/c-fail-wrapper
_FAIL_WRAPPER.CXX= ${WRKDIR}/.compiler/bin/c++-fail-wrapper
_FAIL_WRAPPER.FC= ${WRKDIR}/.compiler/bin/fortran-fail-wrapper

${_FAIL_WRAPPER.CC}: fail-wrapper
${_FAIL_WRAPPER.CXX}: fail-wrapper
${_FAIL_WRAPPER.FC}: fail-wrapper

.PHONY: fail-wrapper
fail-wrapper: .USE
${RUN}${MKDIR} ${.TARGET:H}
${RUN} \
exec 1>${.TARGET}; \
${ECHO} '#!'${TOOLS_SHELL:Q}; \
${ECHO} 'wrapperlog="$${TOOLS_WRAPPER_LOG-'${_TOOLS_WRAP_LOG:Q}'}"'; \
${ECHO} 'lang="${.TARGET:T:S/-fail-wrapper//}"'; \
${ECHO} 'msg="*** Please consider adding $$lang to USE_LANGUAGES in the package Makefile."'; \
${ECHO} '${ECHO} "$$msg" >> $$wrapperlog'; \
${ECHO} '${ECHO} "$$msg" > ${WARNING_DIR}/${.TARGET:T}'; \
${ECHO} '${ECHO} "PKGSRC-WARNING: Something is trying to run the $$lang compiler," 1>&2'; \
${ECHO} '${ECHO} "PKGSRC-WARNING: but it is not added to USE_LANGUAGES in the package Makefile." 1>&2'; \
${ECHO} 'exit 1'
${RUN}${CHMOD} +x ${.TARGET}

.if empty(USE_LANGUAGES:Mc) && empty(USE_LANGUAGES:Mobjc)
PKG_CC:= ${_FAIL_WRAPPER.CC}
ALL_ENV+= CPP=${CPP:Q}
override-tools: ${_FAIL_WRAPPER.CC}
.endif
.if empty(USE_LANGUAGES:Mc++)
PKG_CXX:= ${_FAIL_WRAPPER.CXX}
ALL_ENV+= CXXCPP=${CPP:Q} # to make some Autoconf scripts happy
override-tools: ${_FAIL_WRAPPER.CXX}
.endif
.if empty(USE_LANGUAGES:Mfortran)
PKG_FC:= ${_FAIL_WRAPPER.FC}
override-tools: ${_FAIL_WRAPPER.FC}
.endif

.endif # BSD_COMPILER_MK
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