131 lines
4.1 KiB
Makefile
131 lines
4.1 KiB
Makefile
# $NetBSD: Makefile.params,v 1.7 2013/11/01 11:09:05 apb Exp $
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#
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# Makefile fragment for printing build parameters.
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#
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# Public variables:
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# RELEASEVARS
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# List of variables whose value should be printed.
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#
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# PRINT_PARAMS
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# A command to print the desired variables and values
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# to stdout, without any additional debugging information.
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# Values are printed as single-quoted strings, with
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# embedded quotes and newlines escaped in a way that's
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# acceptable to sh(1). Undefined values are printed
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# as "(undefined)" (without quotation marks).
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#
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# Internal targets:
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# _params:
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# Prints the names and values of all the variables
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# listed in ${RELEASEVARS}. The desired results may be
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# redirected somewhere other than stdout, for example by
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# setting _params_redirect='>&3'. stdout and stderr may
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# contain unwanted debugging information, from make and
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# the shell.
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#
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# Internal variables:
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# _params_redirect:
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# If set, this should be a shell redirection specification, such
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# as '>&3', controlling where the output from "make _params" will
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# be sent.
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#
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# Example:
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# . ${NETBSDSRCDIR}/etc/Makefile.params
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# show-params: .MAKE .PHONY # print params to stdout
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# @${PRINT_PARAMS}
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#
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.include <bsd.own.mk> # for some variables
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.include <bsd.sys.mk> # for more variables
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RELEASEVARS= BSDOBJDIR BSDSRCDIR BUILDID \
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DESTDIR DISTRIBVER EXTERNAL_TOOLCHAIN HAVE_GCC HAVE_GDB \
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HAVE_LLVM HAVE_PCC INSTALLWORLDDIR \
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KERNARCHDIR KERNCONFDIR KERNOBJDIR KERNSRCDIR \
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MACHINE MACHINE_ARCH MAKE MAKECONF MAKEFLAGS \
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MAKEOBJDIR MAKEOBJDIRPREFIX MAKEVERBOSE \
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MKATF MKBFD MKBINUTILS MKCATPAGES \
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MKCRYPTO MKCRYPTO_RC5 MKCVS \
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MKDEBUG MKDEBUGLIB MKDOC MKDTRACE MKDYNAMICROOT \
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MKGCC MKGCCCMDS MKGDB \
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MKHESIOD MKHTML MKIEEEFP MKINET6 MKINFO MKIPFILTER \
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MKKERBEROS MKKYUA MKLDAP MKLINKLIB MKLINT MKLLVM \
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MKMAN MKMANZ MKMDNS MKNLS MKNPF MKOBJ MKOBJDIRS \
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MKPAM MKPCC MKPF MKPIC MKPICINSTALL MKPICLIB MKPOSTFIX \
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MKPROFILE \
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MKSHARE MKSKEY MKSOFTFLOAT MKSTATICLIB \
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MKUNPRIVED MKUPDATE MKX11 MKYP \
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NBUILDJOBS NETBSDSRCDIR \
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NOCLEANDIR NODISTRIBDIRS NOINCLUDES \
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OBJMACHINE \
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RELEASEDIR RELEASEMACHINEDIR TOOLCHAIN_MISSING TOOLDIR \
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USE_HESIOD USE_INET6 USE_JEMALLOC USE_KERBEROS USE_LDAP \
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USE_PAM USE_SKEY USE_YP \
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USETOOLS USR_OBJMACHINE \
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X11SRCDIR X11FLAVOUR
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#
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# Duplicate the DISTRIBVER setting from src/etc/Makefile.
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#
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.ifndef DISTRIBVER
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DISTRIBVER!= ${HOST_SH} ${NETBSDSRCDIR}/sys/conf/osrelease.sh
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.endif
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#
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# _params does the printing.
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#
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_params_redirect?= # empty
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_params: .PHONY
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.for var in ${RELEASEVARS}
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.if defined(${var})
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@printf "%20s = '%-s'\n" ${var} ${${var}:C/'/'\\\\''/gW:Q} \
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${_params_redirect}
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.else
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@printf "%20s = (undefined)\n" ${var} \
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${_params_redirect}
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.endif
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.endfor
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# PRINT_PARAMS:
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#
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# The output from the "make _params" can include the following types of
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# unwanted lines:
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#
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# make -j prints "--- _params ---";
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#
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# if MAKEVERBOSE is set to 3 or more then make prints each "printf"
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# command in addition to executing it;
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#
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# if MAKEVERBOSE is set to 4 then the shell prints each command
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# (prefixed with "+").
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#
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# So the resulting output can look like this:
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#
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# --- _params ---
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# + echo 'printf "%20s = '\''%-s'\''\n" BSDOBJDIR /usr/obj'
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# printf "%20s = '%-s'\n" BSDOBJDIR /usr/obj
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# + printf '%20s = '\''%-s'\''\n' BSDOBJDIR /usr/obj
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# BSDOBJDIR = '/usr/obj'
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# + echo 'printf "%20s = '\''%-s'\''\n" BSDSRCDIR /usr/src'
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# printf "%20s = '%-s'\n" BSDSRCDIR /usr/src
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# + printf '%20s = '\''%-s'\''\n' BSDSRCDIR /usr/src
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# BSDSRCDIR = '/usr/src'
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# [...]
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#
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# where what we want is just this:
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#
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# BSDOBJDIR = '/usr/obj'
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# BSDSRCDIR = '/usr/src'
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# [...]
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#
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# The shell redirections in ${PRINT_PARAMS} ensure that the unwanted
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# noise is discarded (via ">/dev/null"), while the desired information
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# ends up on the subshell's stdout (via ">&3" and "3>&1"). The value
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# of _params_redirect is passed in the environment instead of on the
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# command line, to prevent it from appearing in MAKEFLAGS (which would
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# appear in the output).
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#
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PRINT_PARAMS:= (_params_redirect='>&3' ${MAKE} -f ${.PARSEDIR:Q}/${.PARSEFILE:Q} _params 3>&1 >/dev/null)
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