6d81083d0b
Reference the notion of making compilers visible to the build environment. Mention setting --std flags. Note that the text is currently aspirtational relative to gcc and C++. (Comment change only.)
260 lines
8 KiB
Makefile
260 lines
8 KiB
Makefile
# $NetBSD: compiler.mk,v 1.87 2017/07/04 14:35:55 gdt Exp $
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#
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# This Makefile fragment implements handling for supported C/C++/Fortran
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# compilers.
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#
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# The following variables may be set by the pkgsrc user in mk.conf:
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#
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# PKGSRC_COMPILER
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# A list of values specifying the chain of compilers to be used by
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# pkgsrc to build packages.
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#
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# Valid values are:
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# ccc Compaq C Compilers (Tru64)
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# ccache compiler cache (chainable)
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# clang Clang C and Objective-C compiler
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# distcc distributed C/C++ (chainable)
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# f2c Fortran 77 to C compiler (chainable)
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# icc Intel C++ Compiler (Linux)
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# ido SGI IRIS Development Option cc (IRIX 5)
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# gcc GNU
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# hp HP-UX C/aC++ compilers
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# mipspro Silicon Graphics, Inc. MIPSpro (n32/n64)
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# mipspro-ucode Silicon Graphics, Inc. MIPSpro (o32)
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# pcc Portable C Compiler
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# sunpro Sun Microsystems, Inc. WorkShip/Forte/Sun
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# ONE Studio
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# xlc IBM's XL C/C++ compiler suite (Darwin/MacOSX)
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#
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# The default is "gcc". You can use ccache and/or distcc with
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# an appropriate PKGSRC_COMPILER setting, e.g. "ccache distcc
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# gcc". You can also use "f2c" to overlay the lang/f2c package
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# over the C compiler instead of using the system Fortran
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# compiler. The chain should always end in a real compiler.
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# This should only be set in /etc/mk.conf.
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#
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# COMPILER_USE_SYMLINKS
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# If set to yes, use symlinks for the compiler drivers, otherwise
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# shell scripts are created. The default is yes.
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#
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# The following variables may be set by a package:
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#
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# USE_LANGUAGES
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# Declares the languages used in the source code of the package.
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# This is used to determine the correct compilers to make
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# visible to the build environment, installing them if
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# necessary. Flags such as --std=c++99 are also added.
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# Valid values are: c, c99, c++, c++0x, gnu++0x, c++11, gnu++11,
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# c++14, gnu++14, fortran, fortran77, java, objc, obj-c++, and
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# ada. The default is "c".
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#
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# The above is partly aspirational. As an example c++11 does
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# not force a new enough version of gcc.
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# The following variables are defined, and available for testing in
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# package Makefiles:
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#
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# CC_VERSION
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# The compiler and version being used, e.g.,
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#
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# .include "../../mk/compiler.mk"
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#
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# .if !empty(CC_VERSION:Mgcc-3*)
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# ...
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# .endif
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#
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# Keywords: compiler
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.if !defined(BSD_COMPILER_MK)
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BSD_COMPILER_MK= defined
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_VARGROUPS+= compiler
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_USER_VARS.compiler= PKGSRC_COMPILER USE_PKGSRC_GCC ABI COMPILER_USE_SYMLINKS
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_PKG_VARS.compiler= USE_LANGUAGES GCC_REQD NOT_FOR_COMPILER ONLY_FOR_COMPILER
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_SYS_VARS.compiler= CC_VERSION
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.include "bsd.fast.prefs.mk"
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# Since most packages need a C compiler, this is the default value.
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USE_LANGUAGES?= c
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# Add c support if c99 is set
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.if !empty(USE_LANGUAGES:Mc99)
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USE_LANGUAGES+= c
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.endif
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.for _version_ in gnu++14 c++14 gnu++11 c++11 gnu++0x c++0x
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. if !empty(USE_LANGUAGES:M${_version_})
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USE_LANGUAGES+= c++
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. endif
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.endfor
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COMPILER_USE_SYMLINKS?= yes
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_COMPILERS= ccc gcc icc ido mipspro mipspro-ucode \
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sunpro xlc hp pcc clang
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_PSEUDO_COMPILERS= ccache distcc f2c g95
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.if defined(NOT_FOR_COMPILER) && !empty(NOT_FOR_COMPILER)
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. for _compiler_ in ${_COMPILERS}
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. if ${NOT_FOR_COMPILER:M${_compiler_}} == ""
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_ACCEPTABLE_COMPILERS+= ${_compiler_}
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. endif
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. endfor
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.elif defined(ONLY_FOR_COMPILER) && !empty(ONLY_FOR_COMPILER)
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. for _compiler_ in ${_COMPILERS}
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. if ${ONLY_FOR_COMPILER:M${_compiler_}} != ""
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_ACCEPTABLE_COMPILERS+= ${_compiler_}
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. endif
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. endfor
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.else
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_ACCEPTABLE_COMPILERS+= ${_COMPILERS}
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.endif
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# Currently only gcc-based compilers support Ada
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# Override PKGSRC_COMPILER if Ada language specified
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.if !empty(USE_LANGUAGES:Mada)
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PKGSRC_COMPILER= gcc
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.endif
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.if defined(_ACCEPTABLE_COMPILERS)
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. for _acceptable_ in ${_ACCEPTABLE_COMPILERS}
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. for _compiler_ in ${PKGSRC_COMPILER}
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. if !empty(_ACCEPTABLE_COMPILERS:M${_compiler_}) && !defined(_COMPILER)
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_COMPILER= ${_compiler_}
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. endif
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. endfor
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. endfor
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.endif
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.if !defined(_COMPILER)
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PKG_FAIL_REASON+= "No acceptable compiler found for ${PKGNAME}."
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.endif
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.for _compiler_ in ${PKGSRC_COMPILER}
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. if !empty(_PSEUDO_COMPILERS:M${_compiler_})
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_PKGSRC_COMPILER:= ${_compiler_} ${_PKGSRC_COMPILER}
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. endif
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.endfor
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_PKGSRC_COMPILER:= ${_COMPILER} ${_PKGSRC_COMPILER}
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_COMPILER_STRIP_VARS= # empty
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.for _compiler_ in ${_PKGSRC_COMPILER}
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. include "compiler/${_compiler_}.mk"
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.endfor
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.undef _compiler_
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.if !defined(PKG_CPP)
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PKG_CPP:=${CPP}
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.endif
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# Ensure the Solaris linker is used by default.
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.if ${OPSYS} == "SunOS"
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. if exists(/usr/ccs/bin/ld)
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PKG_LD?= /usr/ccs/bin/ld
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. elif exists(/usr/bin/ld)
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PKG_LD?= /usr/bin/ld
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. endif
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.endif
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# Strip the leading paths from the toolchain variables since we manipulate
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# the PATH to use the correct executable.
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#
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.for _var_ in ${_COMPILER_STRIP_VARS}
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. if empty(${_var_}:C/^/_asdf_/1:N_asdf_*)
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${_var_}:= ${${_var_}:C/^/_asdf_/1:M_asdf_*:S/^_asdf_//:T}
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. else
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${_var_}:= ${${_var_}:C/^/_asdf_/1:M_asdf_*:S/^_asdf_//:T} ${${_var_}:C/^/_asdf_/1:N_asdf_*}
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. endif
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.endfor
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# Pass the compiler flag based on the most recent version of the C++ standard
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# required. We currently assume that each standard is a superset of all that
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# come after it.
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#
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# If and when the flags differ between compilers we can push this down into
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# the respective mk/compiler/*.mk files.
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#
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_CXX_VERSION_REQD=
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.for _version_ in gnu++14 c++14 gnu++11 c++11 gnu++0x c++0x
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. if empty(_CXX_VERSION_REQD) && !empty(USE_LANGUAGES:M${_version_})
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_CXX_VERSION_REQD= ${_version_}
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_WRAP_EXTRA_ARGS.CXX+= -std=${_CXX_VERSION_REQD}
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CWRAPPERS_PREPEND.cxx+= -std=${_CXX_VERSION_REQD}
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. endif
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.endfor
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.if defined(ABI) && !empty(ABI)
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_WRAP_EXTRA_ARGS.CC+= ${_COMPILER_ABI_FLAG.${ABI}}
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_WRAP_EXTRA_ARGS.CXX+= ${_COMPILER_ABI_FLAG.${ABI}}
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_WRAP_EXTRA_ARGS.FC+= ${_COMPILER_ABI_FLAG.${ABI}}
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CWRAPPERS_PREPEND.cc+= ${_COMPILER_ABI_FLAG.${ABI}}
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CWRAPPERS_PREPEND.cxx+= ${_COMPILER_ABI_FLAG.${ABI}}
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CWRAPPERS_PREPEND.f77+= ${_COMPILER_ABI_FLAG.${ABI}}
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.endif
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# Enable SSP if the user has chosen to and the compiler supports it.
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#
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.if ${_PKGSRC_USE_SSP} == "yes" && defined(_SSP_CFLAGS)
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_WRAP_EXTRA_ARGS.CC+= ${_SSP_CFLAGS}
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_WRAP_EXTRA_ARGS.CXX+= ${_SSP_CFLAGS}
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CWRAPPERS_APPEND.cc+= ${_SSP_CFLAGS}
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CWRAPPERS_APPEND.cxx+= ${_SSP_CFLAGS}
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CWRAPPERS_APPEND.f77+= ${_SSP_CFLAGS}
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.endif
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# If the languages are not requested, force them not to be available
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# in the generated wrappers.
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#
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_FAIL_WRAPPER.CC= ${WRKDIR}/.compiler/bin/c-fail-wrapper
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_FAIL_WRAPPER.CXX= ${WRKDIR}/.compiler/bin/c++-fail-wrapper
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_FAIL_WRAPPER.FC= ${WRKDIR}/.compiler/bin/fortran-fail-wrapper
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_FAIL_WRAPPER.ADA= ${WRKDIR}/.compiler/bin/ada-fail-wrapper
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${_FAIL_WRAPPER.CC}: fail-wrapper
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${_FAIL_WRAPPER.CXX}: fail-wrapper
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${_FAIL_WRAPPER.FC}: fail-wrapper
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${_FAIL_WRAPPER.ADA}: fail-wrapper
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.PHONY: fail-wrapper
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fail-wrapper: .USE
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${RUN}${MKDIR} ${.TARGET:H}
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${RUN} \
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exec 1>${.TARGET}; \
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${ECHO} '#!'${TOOLS_SHELL:Q}; \
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${ECHO} 'wrapperlog="$${TOOLS_WRAPPER_LOG-'${_TOOLS_WRAP_LOG:Q}'}"'; \
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${ECHO} 'lang="${.TARGET:T:S/-fail-wrapper//}"'; \
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${ECHO} 'msg="*** Please consider adding $$lang to USE_LANGUAGES in the package Makefile."'; \
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${ECHO} '${ECHO} "$$msg" >> $$wrapperlog'; \
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${ECHO} '${ECHO} "$$msg" > ${WARNING_DIR}/${.TARGET:T}'; \
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${ECHO} '${ECHO} "PKGSRC-WARNING: Something is trying to run the $$lang compiler," 1>&2'; \
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${ECHO} '${ECHO} "PKGSRC-WARNING: but it is not added to USE_LANGUAGES in the package Makefile." 1>&2'; \
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${ECHO} 'exit 1'
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${RUN}${CHMOD} +x ${.TARGET}
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.if empty(USE_LANGUAGES:Mc) && empty(USE_LANGUAGES:Mobjc) && empty(USE_LANGUAGES:Mobjc-c++)
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PKG_CC:= ${_FAIL_WRAPPER.CC}
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ALL_ENV+= CPP=${CPP:Q}
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override-tools: ${_FAIL_WRAPPER.CC}
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.endif
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.if empty(USE_LANGUAGES:Mc++)
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PKG_CXX:= ${_FAIL_WRAPPER.CXX}
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ALL_ENV+= CXXCPP=${CPP:Q} # to make some Autoconf scripts happy
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override-tools: ${_FAIL_WRAPPER.CXX}
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.endif
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.if empty(USE_LANGUAGES:Mfortran) && empty(USE_LANGUAGES:Mfortran77)
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PKG_FC:= ${_FAIL_WRAPPER.FC}
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override-tools: ${_FAIL_WRAPPER.FC}
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.endif
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.if empty(USE_LANGUAGES:Mada)
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PKG_ADA:= ${_FAIL_WRAPPER.ADA}
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override-tools: ${_FAIL_WRAPPER.ADA}
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.endif
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.if !empty(DRAGONFLY_CCVER) && ${OPSYS} == "DragonFly"
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ALL_ENV+= CCVER=${DRAGONFLY_CCVER}
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.endif
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.endif # BSD_COMPILER_MK
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