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CVS commit: pkgsrc/mk
Module Name: pkgsrc
Committed By: nia
Date: Sun May 1 08:03:41 UTC 2022
Modified Files:
pkgsrc/mk: bsd.prefs.mk
pkgsrc/mk/platform: Linux.mk
pkgsrc/mk/tools: tools.Linux.mk
Log Message:
mk: Initial support for NixOS (Linux variant)
A particular challenge for pkgsrc on NixOS is that it usurps all
Unix conventions and stores its system binaries and libraries in
a crazy system of hashed sub-directories:
$ which ls
/run/current-system/sw/bin/ls
$ ls -l /run/current-system/sw/bin/ls
Lrwxrwxrwx 1 root root 65 Jan 1 1970 /run/current-system/sw/bin/ls -> /nix/store/xs02fpnpkq
frhqqfsxx3lpj48wrapd00-coreutils-8.32/bin/ls
We can make a "best effort" attempt to accomodate this by invoking
the compiler to figure out where libc is. In general, it's required to
adjust the Linux files to make fewer assumptions about the layout of the
filesystem.
However, since using a compiler and libc from NixOS results in /nix/store
paths being embedded in binaries, running the NixOS "garbage collector"
can result in binaries installed from pkgsrc becoming unusable. Use with
care:
$ readelf -a ~/pkg/bin/perl | grep nix
[Requesting program interpreter: /nix/store/p5sam91qwz995pi0160rfr7dkh6pibil-glibc-2.32
-39/lib/ld-linux-aarch64.so.1]
0x000000000000001d (RUNPATH) Library runpath: [/home/nia/pkg/lib:/home/nia/pkg/li
b/perl5/5.32.0/aarch64-linux/CORE:/nix/store/p5sam91qwz995pi0160rfr7dkh6pibil-glibc-2.32-39/l
ib:/nix/store/vv9nz0bwv1pfl70w14k7dgz6yx7hjwxk-gcc-9.3.0-lib/lib]
Apparently, the "stdenv.cc" package must be installed prior to
bootstrapping pkgsrc.
I worked on this patch last year for a friend who wanted to test
something on pkgsrc but had no other system available.
To generate a diff of this commit:
cvs rdiff -u -r1.420 -r1.421 pkgsrc/mk/bsd.prefs.mk
cvs rdiff -u -r1.88 -r1.89 pkgsrc/mk/platform/Linux.mk
cvs rdiff -u -r1.65 -r1.66 pkgsrc/mk/tools/tools.Linux.mk
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: pkgsrc/mk/bsd.prefs.mk
diff -u pkgsrc/mk/bsd.prefs.mk:1.420 pkgsrc/mk/bsd.prefs.mk:1.421
--- pkgsrc/mk/bsd.prefs.mk:1.420 Sat Apr 30 21:27:57 2022
+++ pkgsrc/mk/bsd.prefs.mk Sun May 1 08:03:40 2022
@@ -1,4 +1,4 @@
-# $NetBSD: bsd.prefs.mk,v 1.420 2022/04/30 21:27:57 tnn Exp $
+# $NetBSD: bsd.prefs.mk,v 1.421 2022/05/01 08:03:40 nia Exp $
#
# This file includes the mk.conf file, which contains the user settings.
#
@@ -81,6 +81,8 @@ _CLEANING:= ${"${.TARGETS:C,( [[:alnum:]
UNAME=/usr/bin/uname
.elif exists(/bin/uname)
UNAME=/bin/uname
+.elif exists(/run/current-system/sw/bin/uname)
+UNAME=/run/current-system/sw/bin/uname
.else
UNAME=echo Unknown
.endif
Index: pkgsrc/mk/platform/Linux.mk
diff -u pkgsrc/mk/platform/Linux.mk:1.88 pkgsrc/mk/platform/Linux.mk:1.89
--- pkgsrc/mk/platform/Linux.mk:1.88 Thu Feb 10 21:22:44 2022
+++ pkgsrc/mk/platform/Linux.mk Sun May 1 08:03:41 2022
@@ -1,4 +1,4 @@
-# $NetBSD: Linux.mk,v 1.88 2022/02/10 21:22:44 schmonz Exp $
+# $NetBSD: Linux.mk,v 1.89 2022/05/01 08:03:41 nia Exp $
#
# Variable definitions for the Linux operating system.
@@ -9,27 +9,36 @@ IMAKE_TOOLS= gmake # extra tools requir
.endif
IMAKEOPTS+= -DBuildHtmlManPages=NO
PKGLOCALEDIR?= share
+
+TYPE?= type # Shell builtin
+
+.if exists(/etc/NIXOS)
+PS?= /run/current-system/sw/bin/ps
+SU?= /run/current-system/sw/bin/su
+USERADD?= /run/current-system/sw/bin/useradd
+GROUPADD?= /run/current-system/sw/bin/groupadd
+NOLOGIN?= /run/current-system/sw/bin/nologin
+.endif
+
PS?= /bin/ps
-# XXX: default from defaults/mk.conf. Verify/correct for this platform
-# and remove this comment.
.if exists(/usr/bin/su)
SU?= /usr/bin/su
.else
SU?= /bin/su
.endif
-TYPE?= type # Shell builtin
+.if exists(/sbin/nologin)
+NOLOGIN?= /sbin/nologin
+.else
+NOLOGIN?= /bin/false
+.endif
+USERADD?= /usr/sbin/useradd
+GROUPADD?= /usr/sbin/groupadd
CPP_PRECOMP_FLAGS?= # unset
DEF_UMASK?= 022
DEFAULT_SERIAL_DEVICE?= /dev/null
EXPORT_SYMBOLS_LDFLAGS?= # Don't add symbols to the dynamic symbol table
-GROUPADD?= /usr/sbin/groupadd
MOTIF_TYPE_DEFAULT?= motif # default 2.0 compatible libs type
-.if exists(/etc/ssdlinux_version)
-NOLOGIN?= /sbin/nologin
-.else
-NOLOGIN?= /bin/false
-.endif
PKG_TOOLS_BIN?= ${LOCALBASE}/sbin
ROOT_CMD?= ${SU} - root -c
.if exists(/etc/ssdlinux_version)
@@ -43,7 +52,6 @@ ULIMIT_CMD_datasize?= ulimit -d `ulimit
ULIMIT_CMD_stacksize?= ulimit -s `ulimit -H -s`
ULIMIT_CMD_memorysize?= ulimit -m `ulimit -H -m`
ULIMIT_CMD_cputime?= ulimit -t `ulimit -H -t`
-USERADD?= /usr/sbin/useradd
_OPSYS_EMULDIR.linux= # empty
_OPSYS_EMULDIR.linux32= # empty
@@ -80,6 +88,11 @@ _OPSYS_LIB_DIRS?= /lib /usr/lib /lib${LI
.elif exists(/etc/arch-release)
_OPSYS_SYSTEM_RPATH= /lib:/usr/lib
_OPSYS_LIB_DIRS?= /lib /usr/lib
+.elif exists(/etc/NIXOS)
+# NixOS has no fixed locations for system libraries.
+_OPSYS_INCLUDE_DIRS!= echo "" | cpp -v 2>&1 | grep '^[[:space:]]*/.*include$$' | tr '\n' ' '
+
+_OPSYS_LIB_DIRS!= cc -print-search-dirs | awk '/^libraries:/ { $$1=""; $$2=substr($$2, 2); print $$0; }' | tr ':' '\n'
.else
_OPSYS_SYSTEM_RPATH= /lib${LIBABISUFFIX}:/usr/lib${LIBABISUFFIX}
_OPSYS_LIB_DIRS?= /lib${LIBABISUFFIX} /usr/lib${LIBABISUFFIX}
@@ -103,11 +116,7 @@ _OPSYS_PREFER.sysexits?= native
_OPSYS_PREFER.dl?= native
_OPSYS_PREFER.pthread?= native
-.if exists(/usr/include/netinet6) || exists(/usr/include/linux/in6.h)
_OPSYS_HAS_INET6= yes # IPv6 is standard
-.else
-_OPSYS_HAS_INET6= no # IPv6 is not standard
-.endif
_OPSYS_HAS_JAVA= no # Java is not standard
_OPSYS_HAS_MANZ= no # no MANZ for gzipping of man pages
_OPSYS_HAS_OSSAUDIO= no # libossaudio is unavailable
@@ -184,10 +193,17 @@ _GLIBC_VERSION_CMD= if [ -x ${_glibc_pat
ldd --version | \
sed -ne's/^ldd.* \(.*\)$$/\1/p'; \
fi
-GLIBC_VERSION= ${_GLIBC_VERSION_CMD:sh}
. endif
.endfor
+# In case we can't find glibc in any of the normal library paths
+# (i.e. we're on NixOS), try ldconfig. Ironically, NixOS does not
+# actually use ldconfig...
+_GLIBC_VERSION_CMD?= ldconfig --version | \
+ sed -ne's/ldconfig (GNU libc) \(.*\)$$/\1/p'
+
+GLIBC_VERSION= ${_GLIBC_VERSION_CMD:sh}
+
# If this is defined pass it to the make process.
.if defined(NOGCCERROR)
MAKE_ENV+= NOGCCERROR=true
Index: pkgsrc/mk/tools/tools.Linux.mk
diff -u pkgsrc/mk/tools/tools.Linux.mk:1.65 pkgsrc/mk/tools/tools.Linux.mk:1.66
--- pkgsrc/mk/tools/tools.Linux.mk:1.65 Sat Dec 5 13:15:58 2020
+++ pkgsrc/mk/tools/tools.Linux.mk Sun May 1 08:03:41 2022
@@ -1,302 +1,302 @@
-# $NetBSD: tools.Linux.mk,v 1.65 2020/12/05 13:15:58 js Exp $
+# $NetBSD: tools.Linux.mk,v 1.66 2022/05/01 08:03:41 nia Exp $
#
# System-supplied tools for the Linux operating system.
+#
+# Yet all ye who enter be warned: various Linux distributions
+# place binaries in a myriad of different paths and have a myriad
+# of different userspaces. No assumptions can be made, so this
+# is best-effort. Some distributions do not follow a remotely
+# Unix-like file hierarchy.
+#
+# This file still assumes (until it is proven wrong) that some
+# tools are provided by GNU.
-TOOLS_PLATFORM.[?= [ # shell builtin
-.if exists(/etc/debian_version)
-TOOLS_PLATFORM.awk?= /usr/bin/awk
+.if exists(/etc/NIXOS)
+_LINUX_BINPATHS?= /run/current-system/sw/bin
.else
-TOOLS_PLATFORM.awk?= ${TOOLS_PLATFORM.gawk}
-.endif
-.if exists(/usr/bin/autopoint)
-TOOLS_PLATFORM.autopoint?= /usr/bin/autopoint
-.endif
-.if exists(/bin/basename)
-TOOLS_PLATFORM.basename?= /bin/basename
-.elif exists(/usr/bin/basename)
-TOOLS_PLATFORM.basename?= /usr/bin/basename
-.endif
-.if exists(/bin/bash)
-TOOLS_PLATFORM.bash?= /bin/bash
-.endif
-.if exists(/usr/bin/bison)
-TOOLS_PLATFORM.bison?= /usr/bin/bison
-TOOLS_PLATFORM.bison-yacc?= /usr/bin/bison -y
-.endif
-.if exists(/usr/bin/bzcat)
-TOOLS_PLATFORM.bzcat?= /usr/bin/bzcat
-.elif exists(/bin/bzcat)
-TOOLS_PLATFORM.bzcat?= /bin/bzcat
-.elif exists(/usr/bin/bzip2)
-TOOLS_PLATFORM.bzcat?= /usr/bin/bzip2 -cd
-.endif
-.if exists(/usr/bin/bzip2)
-TOOLS_PLATFORM.bzip2?= /usr/bin/bzip2
-.elif exists(/bin/bzip2)
-TOOLS_PLATFORM.bzip2?= /bin/bzip2
-.endif
-TOOLS_PLATFORM.cat?= /bin/cat
-.if exists(/bin/chgrp)
-TOOLS_PLATFORM.chgrp?= /bin/chgrp
-.elif exists(/usr/bin/chgrp)
-TOOLS_PLATFORM.chgrp?= /usr/bin/chgrp
-.endif
-TOOLS_PLATFORM.chmod?= /bin/chmod
-.if exists(/bin/chown)
-TOOLS_PLATFORM.chown?= /bin/chown
-.elif exists(/usr/sbin/chown)
-TOOLS_PLATFORM.chown?= /usr/sbin/chown
-.endif
-.if exists(/bin/cmp)
-TOOLS_PLATFORM.cmp?= /bin/cmp
-.elif exists(/usr/bin/cmp)
-TOOLS_PLATFORM.cmp?= /usr/bin/cmp
-.endif
-TOOLS_PLATFORM.cp?= /bin/cp
-.if exists(/bin/tcsh)
-TOOLS_PLATFORM.csh?= /bin/tcsh
-.endif
-.if exists(/usr/bin/curl)
-TOOLS_PLATFORM.curl?= /usr/bin/curl
-.endif
-.if exists(/bin/cut)
-TOOLS_PLATFORM.cut?= /bin/cut
-.elif exists(/usr/bin/cut)
-TOOLS_PLATFORM.cut?= /usr/bin/cut
-.endif
-TOOLS_PLATFORM.date?= /bin/date
-.if exists(/bin/diff)
-TOOLS_PLATFORM.diff?= /bin/diff
-.elif exists(/usr/bin/diff)
-TOOLS_PLATFORM.diff?= /usr/bin/diff
-.endif
-.if exists(/bin/diff3)
-TOOLS_PLATFORM.diff3?= /bin/diff3
-.elif exists(/usr/bin/diff3)
-TOOLS_PLATFORM.diff3?= /usr/bin/diff3
-.endif
-TOOLS_PLATFORM.dirname?= /usr/bin/dirname
-TOOLS_PLATFORM.echo?= echo # shell builtin
-.if exists(/bin/egrep)
-TOOLS_PLATFORM.egrep?= /bin/egrep
-TOOLS_PLATFORM.gegrep?= /bin/egrep
-.elif exists(/usr/bin/egrep)
-TOOLS_PLATFORM.egrep?= /usr/bin/egrep
-TOOLS_PLATFORM.gegrep?= /usr/bin/egrep
+_LINUX_BINPATHS?= /bin /usr/bin /sbin /usr/sbin
.endif
-TOOLS_PLATFORM.env?= /usr/bin/env
-.if exists(/usr/bin/expr)
-TOOLS_PLATFORM.expr?= /usr/bin/expr
-.elif exists(/bin/expr)
-TOOLS_PLATFORM.expr?= /bin/expr
-.endif
-TOOLS_PLATFORM.false?= false # shell builtin
-.if exists(/bin/fgrep)
-TOOLS_PLATFORM.fgrep?= /bin/fgrep
-TOOLS_PLATFORM.gfgrep?= /bin/fgrep
-.elif exists(/usr/bin/fgrep)
-TOOLS_PLATFORM.fgrep?= /usr/bin/fgrep
-TOOLS_PLATFORM.gfgrep?= /usr/bin/fgrep
-.endif
-TOOLS_PLATFORM.file?= /usr/bin/file
-.if exists(/bin/find)
-TOOLS_PLATFORM.find?= /bin/find
-.else
-TOOLS_PLATFORM.find?= /usr/bin/find
-.endif
-.if exists(/etc/debian_version)
-. if exists(/usr/bin/gawk)
-TOOLS_PLATFORM.gawk?= /usr/bin/gawk
+
+.for _path in ${_LINUX_BINPATHS}
+. if exists(${_path}/autopoint)
+TOOLS_PLATFORM.autopoint?= ${_path}/autopoint
. endif
-.else
-. if exists(/bin/awk)
-TOOLS_PLATFORM.gawk?= /bin/awk
-. else
-TOOLS_PLATFORM.gawk?= /usr/bin/awk
+. if exists(${_path}/basename)
+TOOLS_PLATFORM.basename?= ${_path}/basename
. endif
-.endif
-.if exists(/usr/bin/gettext)
-TOOLS_PLATFORM.gettext?= /usr/bin/gettext
-.endif
-.if exists(/usr/bin/m4)
-TOOLS_PLATFORM.gm4?= /usr/bin/m4
-.endif
-.if exists(/usr/bin/make)
-TOOLS_PLATFORM.gmake?= /usr/bin/make
-.endif
-.if exists(/bin/grep)
-TOOLS_PLATFORM.grep?= /bin/grep
-TOOLS_PLATFORM.ggrep?= /bin/grep
-.elif exists(/usr/bin/grep)
-TOOLS_PLATFORM.grep?= /usr/bin/grep
-TOOLS_PLATFORM.ggrep?= /usr/bin/grep
-.endif
-.if exists(/usr/bin/groff)
-TOOLS_PLATFORM.groff?= /usr/bin/groff
-.endif
-.if exists(/bin/sed)
-TOOLS_PLATFORM.gsed?= /bin/sed
-.elif exists(/usr/bin/sed)
-TOOLS_PLATFORM.gsed?= /usr/bin/sed
-.endif
-.if exists(/usr/bin/soelim)
-TOOLS_PLATFORM.gsoelim?= /usr/bin/soelim
-.endif
-TOOLS_PLATFORM.gstrip?= /usr/bin/strip
-.if exists(/bin/tar)
-TOOLS_PLATFORM.gtar?= /bin/tar
-.elif exists(/usr/bin/tar)
-TOOLS_PLATFORM.gtar?= /usr/bin/tar
-.endif
-.if exists(/bin/gunzip)
-TOOLS_PLATFORM.gunzip?= /bin/gunzip -f
-.elif exists(/usr/bin/gunzip)
-TOOLS_PLATFORM.gunzip?= /usr/bin/gunzip -f
-.endif
-.if exists(/bin/zcat)
-TOOLS_PLATFORM.gzcat?= /bin/zcat
-.elif exists(/usr/bin/zcat)
-TOOLS_PLATFORM.gzcat?= /usr/bin/zcat
-.endif
-.if exists(/bin/gzip)
-TOOLS_PLATFORM.gzip?= /bin/gzip -nf ${GZIP}
-.elif exists(/usr/bin/gzip)
-TOOLS_PLATFORM.gzip?= /usr/bin/gzip -nf ${GZIP}
-.endif
-.if exists(/bin/head)
-TOOLS_PLATFORM.head?= /bin/head
-.elif exists(/usr/bin/head)
-TOOLS_PLATFORM.head?= /usr/bin/head
-.endif
-TOOLS_PLATFORM.hostname?= /bin/hostname
-.if exists(/bin/id)
-TOOLS_PLATFORM.id?= /bin/id
-.elif exists(/usr/bin/id)
-TOOLS_PLATFORM.id?= /usr/bin/id
-.endif
-.if exists(/usr/bin/ident)
-TOOLS_PLATFORM.ident?= /usr/bin/ident
-.endif
-.if exists(/bin/install)
-TOOLS_PLATFORM.install?= /bin/install
-.else
-TOOLS_PLATFORM.install?= /usr/bin/install
-.endif
-.if exists(/sbin/install-info)
-TOOLS_PLATFORM.install-info?= /sbin/install-info
-.elif exists(/usr/sbin/install-info)
-TOOLS_PLATFORM.install-info?= /usr/sbin/install-info
-.elif exists(/usr/bin/install-info)
-TOOLS_PLATFORM.install-info?= /usr/bin/install-info
-.endif
-TOOLS_PLATFORM.ldconfig?= /sbin/ldconfig
-TOOLS_PLATFORM.ln?= /bin/ln
-TOOLS_PLATFORM.ls?= /bin/ls
-TOOLS_PLATFORM.m4?= ${TOOLS_PLATFORM.gm4}
-.if exists(/bin/mail)
-TOOLS_PLATFORM.mail?= /bin/mail # RH, Mandrake
-.elif exists(/usr/bin/mail)
-TOOLS_PLATFORM.mail?= /usr/bin/mail # Debian, Slackware, SuSE
-.endif
-.if exists(/usr/bin/makeinfo)
-TOOLS_PLATFORM.makeinfo?= /usr/bin/makeinfo
-.endif
-TOOLS_PLATFORM.mkdir?= /bin/mkdir -p
-.if exists(/usr/bin/mktemp)
-TOOLS_PLATFORM.mktemp?= /usr/bin/mktemp
-.elif exists(/bin/mktemp)
-TOOLS_PLATFORM.mktemp?= /bin/mktemp
-.endif
-.if exists(/usr/bin/msgconv)
-TOOLS_PLATFORM.msgconv?= /usr/bin/msgconv
-.endif
-.if exists(/usr/bin/msgfmt)
-TOOLS_PLATFORM.msgfmt?= /usr/bin/msgfmt
-.endif
-.if exists(/usr/bin/msgmerge)
-TOOLS_PLATFORM.msgmerge?= /usr/bin/msgmerge
-.endif
-TOOLS_PLATFORM.mv?= /bin/mv
-.if exists(/bin/nice)
-TOOLS_PLATFORM.nice?= /bin/nice
-.elif exists(/usr/bin/nice)
-TOOLS_PLATFORM.nice?= /usr/bin/nice
-.endif
-.if exists(/usr/bin/nroff)
-TOOLS_PLATFORM.nroff?= /usr/bin/nroff
-.endif
-.if exists(/usr/bin/openssl)
-TOOLS_PLATFORM.openssl?= /usr/bin/openssl
-.endif
-# Don't use GNU patch
-#TOOLS_PLATFORM.patch?= /usr/bin/patch
-.if exists(/usr/bin/printf)
-TOOLS_PLATFORM.printf?= /usr/bin/printf
-.endif
-TOOLS_PLATFORM.pwd?= /bin/pwd
-TOOLS_PLATFORM.readlink?= /bin/readlink
-TOOLS_PLATFORM.rm?= /bin/rm
-TOOLS_PLATFORM.rmdir?= /bin/rmdir
-.if exists(/bin/sdiff)
-TOOLS_PLATFORM.sdiff?= /bin/sdiff
-.elif exists(/usr/bin/sdiff)
-TOOLS_PLATFORM.sdiff?= /usr/bin/sdiff
-.endif
-TOOLS_PLATFORM.sed?= ${TOOLS_PLATFORM.gsed}
-TOOLS_PLATFORM.sh?= /bin/sh
-.if exists(/usr/bin/sleep)
-TOOLS_PLATFORM.sleep?= /usr/bin/sleep
-.else
-TOOLS_PLATFORM.sleep?= /bin/sleep
-.endif
-.if exists(/usr/bin/soelim)
-TOOLS_PLATFORM.soelim?= /usr/bin/soelim
-.endif
-.if exists(/bin/sort)
-TOOLS_PLATFORM.sort?= /bin/sort
-.elif exists(/usr/bin/sort)
-TOOLS_PLATFORM.sort?= /usr/bin/sort
-.endif
-TOOLS_PLATFORM.strip?= /usr/bin/strip
-TOOLS_PLATFORM.tail?= /usr/bin/tail
-TOOLS_PLATFORM.tar?= ${TOOLS_PLATFORM.gtar}
-.if exists(/usr/bin/tbl)
-TOOLS_PLATFORM.tbl?= /usr/bin/tbl
-.endif
-TOOLS_PLATFORM.tee?= /usr/bin/tee
+. if exists(${_path}/bash)
+TOOLS_PLATFORM.bash?= ${_path}/bash
+. endif
+. if exists(${_path}/bison)
+TOOLS_PLATFORM.bison?= ${_path}/bison
+. endif
+. if exists(${_path}/bzcat)
+TOOLS_PLATFORM.bzcat?= ${_path}/bzcat
+. endif
+. if exists(${_path}/bzip2)
+TOOLS_PLATFORM.bzip2?= ${_path}/bzip2
+. endif
+. if exists(${_path}/cat)
+TOOLS_PLATFORM.cat?= ${_path}/cat
+. endif
+. if exists(${_path}/chgrp)
+TOOLS_PLATFORM.chgrp?= ${_path}/chgrp
+. endif
+. if exists(${_path}/chmod)
+TOOLS_PLATFORM.chmod?= ${_path}/chmod
+. endif
+. if exists(${_path}/chown)
+TOOLS_PLATFORM.chown?= ${_path}/chown
+. endif
+. if exists(${_path}/cmp)
+TOOLS_PLATFORM.cmp?= ${_path}/cmp
+. endif
+. if exists(${_path}/cp)
+TOOLS_PLATFORM.cp?= ${_path}/cp
+. endif
+. if exists(${_path}/tcsh)
+TOOLS_PLATFORM.csh?= ${_path}/tcsh
+. endif
+. if exists(${_path}/curl)
+TOOLS_PLATFORM.curl?= ${_path}/curl
+. endif
+. if exists(${_path}/cut)
+TOOLS_PLATFORM.cut?= ${_path}/cut
+. endif
+. if exists(${_path}/diff)
+TOOLS_PLATFORM.diff?= ${_path}/diff
+. endif
+. if exists(${_path}/diff3)
+TOOLS_PLATFORM.diff3?= ${_path}/diff3
+. endif
+. if exists(${_path}/dirname)
+TOOLS_PLATFORM.dirname?= ${_path}/dirname
+. endif
+. if exists(${_path}/egrep)
+TOOLS_PLATFORM.egrep?= ${_path}/egrep
+. endif
+. if exists(${_path}/env)
+TOOLS_PLATFORM.env?= ${_path}/env
+. endif
+. if exists(${_path}/expr)
+TOOLS_PLATFORM.expr?= ${_path}/expr
+. endif
+. if exists(${_path}/fgrep)
+TOOLS_PLATFORM.fgrep?= ${_path}/fgrep
+. endif
+. if exists(${_path}/file)
+TOOLS_PLATFORM.file?= ${_path}/file
+. endif
+. if exists(${_path}/find)
+TOOLS_PLATFORM.find?= ${_path}/find
+. endif
+. if exists(${_path}/gettext)
+TOOLS_PLATFORM.gettext?= ${_path}/gettext
+. endif
+. if exists(${_path}/m4)
+TOOLS_PLATFORM.m4?= ${_path}/m4
+. endif
+. if exists(${_path}/make)
+TOOLS_PLATFORM.gmake?= ${_path}/make
+. endif
+. if exists(${_path}/gawk)
+TOOLS_PLATFORM.gawk?= ${_path}/gawk
+. endif
+. if exists(${_path}/grep)
+TOOLS_PLATFORM.grep?= ${_path}/grep
+. endif
+. if exists(${_path}/groff)
+TOOLS_PLATFORM.groff?= ${_path}/groff
+. endif
+. if exists(${_path}/sed)
+TOOLS_PLATFORM.sed?= ${_path}/sed
+. endif
+. if exists(${_path}/soelim)
+TOOLS_PLATFORM.gsoelim?= ${_path}/soelim
+. endif
+. if exists(${_path}/tar)
+TOOLS_PLATFORM.tar?= ${_path}/tar
+. endif
+. if exists(${_path}/gunzip)
+TOOLS_PLATFORM.gunzip?= ${_path}/gunzip -f
+. endif
+. if exists(${_path}/zcat)
+TOOLS_PLATFORM.gzcat?= ${_path}/zcat
+. endif
+. if exists(${_path}/gzip)
+TOOLS_PLATFORM.gzip?= ${_path}/gzip -nf ${GZIP}
+. endif
+. if exists(${_path}/head)
+TOOLS_PLATFORM.head?= ${_path}/head
+. endif
+. if exists(${_path}/hostname)
+TOOLS_PLATFORM.hostname?= ${_path}/hostname
+. endif
+. if exists(${_path}/id)
+TOOLS_PLATFORM.id?= ${_path}/id
+. endif
+. if exists(${_path}/ident)
+TOOLS_PLATFORM.ident?= ${_path}/ident
+. endif
+. if exists(${_path}/install)
+TOOLS_PLATFORM.install?= ${_path}/install
+. endif
+. if exists(${_path}/install-info)
+TOOLS_PLATFORM.install-info?= ${_path}/install-info
+. endif
+. if exists(${_path}/ldconfig)
+TOOLS_PLATFORM.ldconfig?= ${_path}/ldconfig
+. endif
+. if exists(${_path}/ln)
+TOOLS_PLATFORM.ln?= ${_path}/ln
+. endif
+. if exists(${_path}/ls)
+TOOLS_PLATFORM.ls?= ${_path}/ls
+. endif
+. if exists(${_path}/mail)
+TOOLS_PLATFORM.mail?= ${_path}/mail # Debian, Slackware, SuSE
+. endif
+. if exists(${_path}/makeinfo)
+TOOLS_PLATFORM.makeinfo?= ${_path}/makeinfo
+. endif
+. if exists(${_path}/mkdir)
+TOOLS_PLATFORM.mkdir?= ${_path}/mkdir -p
+. endif
+. if exists(${_path}/mktemp)
+TOOLS_PLATFORM.mktemp?= ${_path}/mktemp
+. endif
+. if exists(${_path}/msgconv)
+TOOLS_PLATFORM.msgconv?= ${_path}/msgconv
+. endif
+. if exists(${_path}/msgfmt)
+TOOLS_PLATFORM.msgfmt?= ${_path}/msgfmt
+. endif
+. if exists(${_path}/msgmerge)
+TOOLS_PLATFORM.msgmerge?= ${_path}/msgmerge
+. endif
+. if exists(${_path}/mv)
+TOOLS_PLATFORM.mv?= ${_path}/mv
+. endif
+. if exists(${_path}/nice)
+TOOLS_PLATFORM.nice?= ${_path}/nice
+. endif
+. if exists(${_path}/nroff)
+TOOLS_PLATFORM.nroff?= ${_path}/nroff
+. endif
+. if exists(${_path}/openssl)
+TOOLS_PLATFORM.openssl?= ${_path}/openssl
+. endif
+. if exists(${_path}/printf)
+TOOLS_PLATFORM.printf?= ${_path}/printf
+. endif
+. if exists(${_path}/pwd)
+TOOLS_PLATFORM.pwd?= ${_path}/pwd
+. endif
+. if exists(${_path}/readlink)
+TOOLS_PLATFORM.readlink?= ${_path}/readlink
+. endif
+. if exists(${_path}/rm)
+TOOLS_PLATFORM.rm?= ${_path}/rm
+. endif
+. if exists(${_path}/rmdir)
+TOOLS_PLATFORM.rmdir?= ${_path}/rmdir
+. endif
+. if exists(${_path}/sdiff)
+TOOLS_PLATFORM.sdiff?= ${_path}/sdiff
+. endif
+. if exists(${_path}/sh)
+TOOLS_PLATFORM.sh?= ${_path}/sh
+. endif
+. if exists(${_path}/sleep)
+TOOLS_PLATFORM.sleep?= ${_path}/sleep
+. endif
+. if exists(${_path}/soelim)
+TOOLS_PLATFORM.soelim?= ${_path}/soelim
+. endif
+. if exists(${_path}/sort)
+TOOLS_PLATFORM.sort?= ${_path}/sort
+. endif
+. if exists(${_path}/strip)
+TOOLS_PLATFORM.strip?= ${_path}/strip
+. endif
+. if exists(${_path}/tail)
+TOOLS_PLATFORM.tail?= ${_path}/tail
+. endif
+. if exists(${_path}/tbl)
+TOOLS_PLATFORM.tbl?= ${_path}/tbl
+. endif
+. if exists(${_path}/tee)
+TOOLS_PLATFORM.tee?= ${_path}/tee
+. endif
+. if exists(${_path}/touch)
+TOOLS_PLATFORM.touch?= ${_path}/touch
+. endif
+. if exists(${_path}/tr)
+TOOLS_PLATFORM.tr?= ${_path}/tr
+. endif
+. if exists(${_path}/tsort)
+TOOLS_PLATFORM.tsort?= ${_path}/tsort
+. endif
+. if exists(${_path}/uniq)
+TOOLS_PLATFORM.uniq?= ${_path}/uniq
+. endif
+. if exists(${_path}/wc)
+TOOLS_PLATFORM.wc?= ${_path}/wc
+. endif
+. if exists(${_path}/wget)
+TOOLS_PLATFORM.wget?= ${_path}/wget
+. endif
+. if exists(${_path}/xargs)
+TOOLS_PLATFORM.xargs?= ${_path}/xargs -r
+. endif
+. if exists(${_path}/xgettext)
+TOOLS_PLATFORM.xgettext?= ${_path}/xgettext
+. endif
+. if exists(${_path}/yacc)
+TOOLS_PLATFORM.yacc?= ${_path}/yacc
+. endif
+. if exists(${_path}/xz)
+TOOLS_PLATFORM.xz?= ${_path}/xz
+. endif
+. if exists(${_path}/xzcat)
+TOOLS_PLATFORM.xzcat?= ${_path}/xzcat
+. endif
+.endfor
+
+TOOLS_PLATFORM.[?= [ # shell builtin
+TOOLS_PLATFORM.echo?= echo # shell builtin
+TOOLS_PLATFORM.false?= false # shell builtin
TOOLS_PLATFORM.test?= test # shell builtin
-.if exists(/bin/touch)
-TOOLS_PLATFORM.touch?= /bin/touch
-.elif exists(/usr/bin/touch)
-TOOLS_PLATFORM.touch?= /usr/bin/touch
-.endif
-TOOLS_PLATFORM.tr?= /usr/bin/tr
TOOLS_PLATFORM.true?= true # shell builtin
-TOOLS_PLATFORM.tsort?= /usr/bin/tsort
-.if exists(/bin/uniq)
-TOOLS_PLATFORM.uniq?= /bin/uniq
-.elif exists(/usr/bin/uniq)
-TOOLS_PLATFORM.uniq?= /usr/bin/uniq
-.endif
-.if exists(/bin/wc)
-TOOLS_PLATFORM.wc?= /bin/wc
-.elif exists(/usr/bin/wc)
-TOOLS_PLATFORM.wc?= /usr/bin/wc
-.endif
-.if exists(/usr/bin/wget)
-TOOLS_PLATFORM.wget?= /usr/bin/wget
+
+# assuming grep/sed/tar/awk are usually the GNU versions, is this safe?
+
+.if !empty(TOOLS_PLATFORM.bison)
+TOOLS_PLATFORM.bison-yacc?= ${TOOLS_PLATFORM.bison} -y
.endif
-TOOLS_PLATFORM.xargs?= /usr/bin/xargs -r
-.if exists(/usr/bin/xgettext)
-TOOLS_PLATFORM.xgettext?= /usr/bin/xgettext
+
+TOOLS_PLATFORM.awk?= ${TOOLS_PLATFORM.gawk}
+
+TOOLS_PLATFORM.gsed?= ${TOOLS_PLATFORM.sed}
+TOOLS_PLATFORM.gtar?= ${TOOLS_PLATFORM.tar}
+TOOLS_PLATFORM.gm4?= ${TOOLS_PLATFORM.m4}
+
+TOOLS_PLATFORM.gstrip?= ${TOOLS_PLATFORM.strip}
+
+.if !empty(TOOLS_PLATFORM.grep)
+TOOLS_PLATFORM.egrep?= ${TOOLS_PLATFORM.grep} -E
+TOOLS_PLATFORM.fgrep?= ${TOOLS_PLATFORM.grep} -F
+TOOLS_PLATFORM.ggrep?= ${TOOLS_PLATFORM.grep}
+TOOLS_PLATFORM.gegrep?= ${TOOLS_PLATFORM.egrep}
+TOOLS_PLATFORM.gfgrep?= ${TOOLS_PLATFORM.fgrep}
.endif
-.if exists(/usr/bin/yacc)
-TOOLS_PLATFORM.yacc?= /usr/bin/yacc
+
+.if !empty(TOOLS_PLATFORM.xz)
+TOOLS_PLATFORM.xzcat?= ${TOOLS_PLATFORM.xz} -cd
.endif
-.if exists(/usr/bin/xz)
-TOOLS_PLATFORM.xz?= /usr/bin/xz
+.if !empty(TOOLS_PLATFORM.bzip2)
+TOOLS_PLATFORM.bzcat?= ${TOOLS_PLATFORM.bzip2} -cd
.endif
-.if exists(/usr/bin/xzcat)
-TOOLS_PLATFORM.xzcat?= /usr/bin/xzcat
+.if !empty(TOOLS_PLATFORM.gzip)
+TOOLS_PLATFORM.zcat?= ${TOOLS_PLATFORM.gzip} -cd
.endif
-
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