From 6a0d154a9ccfb0e2d2470dfdca06621e864895b3 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Wed, 5 Aug 2015 18:22:53 +0200
Subject: [PATCH] OSX compatibility

---
 .gitignore                            |   8 ++
 Makefile.am                           |   7 ++
 README.md                             |   5 ++
 bin/Makefile.am                       |   2 +
 bin/btr                               |  14 +--
 bin/btr-hook                          |  14 +--
 bin/btr-setsid.c                      |  34 ++++++++
 bin/btrc                              |  21 +++--
 bin/{btrd => btrd.in}                 |  14 +--
 configure.ac                          |  60 +++++++++++--
 share/btr/btr.sh                      |  28 +++---
 share/btr/btrc.args                   |   1 -
 share/btr/btrc.sh                     |  20 ++---
 share/btr/btrd.sh                     |  79 +++++++++--------
 share/btr/{common.sh => common.sh.in} | 121 ++++++++++++++------------
 share/btr/{opt.awk => opt.awk.in}     |   4 +-
 16 files changed, 281 insertions(+), 151 deletions(-)
 create mode 100644 bin/Makefile.am
 create mode 100644 bin/btr-setsid.c
 rename bin/{btrd => btrd.in} (52%)
 rename share/btr/{common.sh => common.sh.in} (77%)
 rename share/btr/{opt.awk => opt.awk.in} (88%)

diff --git a/.gitignore b/.gitignore
index 5c80847..6acac89 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,11 @@ config.log
 config.status
 config.cache
 btr-?.?.*
+bin/btr-setsid
+bin/btrd
+compile
+depcomp
+*.o
+.deps
+share/btr/common.sh
+share/btr/opt.awk
diff --git a/Makefile.am b/Makefile.am
index ec71d7b..4ef424a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,12 @@
 EXTRA_SCRIPTS =
 btrdir = $(prefix)
+#bin_SCRIPTS = share/btr/opt.awk share/btr/common.sh bin/btrd
 dist_bin_SCRIPTS = $(BTR_BIN)
 nobase_dist_btr_SCRIPTS = $(BTR_SCRIPTS)
 nobase_dist_btr_DATA = $(BTR_SHARE)
+
+#CLEANFILES = share/btr/opt.awk share/btr/common.sh bin/btrd
+
+SUBDIRS = bin
+
+# vim: noet
diff --git a/README.md b/README.md
index 6f15c99..8459995 100644
--- a/README.md
+++ b/README.md
@@ -62,3 +62,8 @@ Usage: btr [-hyvqcC] [<options>]
   See also curl.example.conf
 
 ```
+
+#### Prerequisites
+
+* GNU getopt
+* nmap's ncat (for btrd/btrc)
diff --git a/bin/Makefile.am b/bin/Makefile.am
new file mode 100644
index 0000000..f2a3741
--- /dev/null
+++ b/bin/Makefile.am
@@ -0,0 +1,2 @@
+bin_PROGRAMS = btr-setsid
+btr_setsid_SOURCES = btr-setsid.c
\ No newline at end of file
diff --git a/bin/btr b/bin/btr
index a8a29a4..db82d6f 100755
--- a/bin/btr
+++ b/bin/btr
@@ -1,21 +1,21 @@
 #!/bin/bash
 
-export BTR_BINDIR=$(realpath $(dirname $0)/)
-export BTR_LIBDIR=$(realpath $(dirname $0)/../share/btr)
+export BTR_BINDIR=$(dirname $0)/
+export BTR_LIBDIR=$(dirname $0)/../share/btr
 BTR_BANNER="Build, test & report. Simple and stupid."
 
 . $BTR_LIBDIR/common.sh
 . $BTR_LIBDIR/btr.sh
 
-btr-parseopts "$@"
-btr-setup
+btr_parseopts "$@"
+btr_setup
 
 if $BTR_VERBOSE
 then
-	btr-conf-show
-	btr-confirm "Everything setup. Do you want to continue?"
+	btr_conf_show
+	btr_confirm "Everything setup. Do you want to continue?"
 fi
 
-btr-run
+btr_run
 
 # vim: noet
diff --git a/bin/btr-hook b/bin/btr-hook
index 644d60c..099fea0 100755
--- a/bin/btr-hook
+++ b/bin/btr-hook
@@ -1,21 +1,21 @@
 #!/bin/bash
 
-export BTR_BINDIR=$(realpath $(dirname $0)/)
-export BTR_LIBDIR=$(realpath $(dirname $0)/../share/btr)
+export BTR_BINDIR=$(dirname $0)/
+export BTR_LIBDIR=$(dirname $0)/../share/btr
 BTR_BANNER="Install btr hook into your VCS reporitory."
 
 . $BTR_LIBDIR/common.sh
 . $BTR_LIBDIR/btr.sh
 
-btr-parseopts "$@"
-btr-setup false
+btr_parseopts "$@"
+btr_setup false
 
 if $BTR_VERBOSE
 then
-	btr-conf-show
+	btr_conf_show
 fi
 
-btr-confirm "Everything setup. Do you want to install the '$BTR_EXTRA_ARGS' hook for '$BTR_SOURCE_RULES'?"
+btr_confirm "Everything setup. Do you want to install the '$BTR_EXTRA_ARGS' hook for '$BTR_SOURCE_RULES'?"
 
 case "$BTR_SOURCE_RULES" in
 git)
@@ -29,7 +29,7 @@ git)
 			else
 				echo "#!/bin/bash"
 			fi
-			echo $(btr-conf-dump) 'BTR_BRANCH=$(basename $(git symbolic-ref HEAD))' "'$BTR_BINDIR/btr' -qy &"
+			echo $(btr_conf_dump) 'BTR_BRANCH=$(basename $(git symbolic-ref HEAD))' "'$BTR_BINDIR/btr' -qy &"
 		) >"$BTR_HOOK_FILE.tmp" && \
 			chmod +x "$BTR_HOOK_FILE.tmp" && \
 			mv "$BTR_HOOK_FILE.tmp" "$BTR_HOOK_FILE" && \
diff --git a/bin/btr-setsid.c b/bin/btr-setsid.c
new file mode 100644
index 0000000..f293efa
--- /dev/null
+++ b/bin/btr-setsid.c
@@ -0,0 +1,34 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+	if (argc < 2) {
+		fprintf(stderr, "Usage: %s <program> [args...]\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	if (getpid() == getpgrp()) {
+		pid_t pid = fork();
+
+		switch (pid) {
+		case 0:
+			break;
+		case -1:
+			perror("fork");
+			return EXIT_FAILURE;
+		default:
+			return EXIT_SUCCESS;
+		}
+	}
+
+	if (setsid() < 0) {
+		perror("setsid");
+		return EXIT_FAILURE;
+	}
+
+	execvp(argv[1], &argv[1]);
+	perror("exec");
+	return EXIT_FAILURE;
+}
diff --git a/bin/btrc b/bin/btrc
index 82b9b7f..658372d 100755
--- a/bin/btrc
+++ b/bin/btrc
@@ -1,27 +1,32 @@
 #!/bin/bash
 
-export BTR_BINDIR=$(realpath $(dirname $0)/)
-export BTR_LIBDIR=$(realpath $(dirname $0)/../share/btr)
+export BTR_BINDIR=$(dirname $0)/
+export BTR_LIBDIR=$(dirname $0)/../share/btr
 BTR_BANNER="Control \`btrd\` daemons."
 
 . $BTR_LIBDIR/common.sh
 . $BTR_LIBDIR/btrc.sh
 
-btr-parseopts "$@"
-btrc-setup
+btr_parseopts "$@"
+btrc_setup
 
 case "$BTR_ACTION" in
 status)
-	ncat --recv-only -U "$BTR_COMFILE"
+	# see https://github.com/nmap/nmap/issues/193
+	if test $(uname -s) = Darwin; then
+		ncat --recv-only 127.0.0.1 $(cat "$BTR_COMFILE")
+	else
+		ncat --recv-only -U "$BTR_COMFILE"
+	fi
 	;;
 cancel)
-	btrc-signal INT
+	btrc_signal INT
 	;;
 run)
-	btrc-signal HUP
+	btrc_signal HUP
 	;;
 term)
-	btrc-signal TERM
+	btrc_signal TERM
 	;;
 esac
 
diff --git a/bin/btrd b/bin/btrd.in
similarity index 52%
rename from bin/btrd
rename to bin/btrd.in
index 055bd7b..bcb1038 100755
--- a/bin/btrd
+++ b/bin/btrd.in
@@ -1,19 +1,19 @@
 #!/bin/bash
 
-export BTR_BINDIR=$(realpath $(dirname $0)/)
-export BTR_LIBDIR=$(realpath $(dirname $0)/../share/btr)
+export BTR_BINDIR=$(dirname $0)/
+export BTR_LIBDIR=$(dirname $0)/../share/btr
 BTR_BANNER="Run btr as background daemon receiving jobs for a repo."
 
 . $BTR_LIBDIR/common.sh
 . $BTR_LIBDIR/btr.sh
 
-btr-parseopts "$@"
-btr-setup
+btr_parseopts "$@"
+btr_setup
 
 if $BTR_VERBOSE
 then
-	btr-conf-show
-	btr-confirm "Everything setup. Do you want to start the daemon?"
+	btr_conf_show
+	btr_confirm "Everything setup. Do you want to start the daemon?"
 elif ! $BTR_QUIET
 then
 	echo "Starting the daemon. Control with \`btrc $BTR_BUILD\`"
@@ -21,6 +21,6 @@ else
 	echo "$BUILD"
 fi
 
-setsid $SHELL -c "$BTR_LIBDIR/btrd.sh &"
+@SETSID@ $SHELL -c "$BTR_LIBDIR/btrd.sh &"
 
 # vim: noet
diff --git a/configure.ac b/configure.ac
index 98676b6..a3ab9da 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,22 +1,72 @@
-AC_INIT([btr], [0.4.0], [mike@php.net])
+AC_INIT([btr], [0.5.0], [mike@php.net])
 AM_INIT_AUTOMAKE([foreign])
-AM_SILENT_RULES()
+AM_SILENT_RULES
 AC_CONFIG_SRCDIR([./share/btr/btr.sh])
 
+AC_PATH_PROG([GETOPT], [getopt], [getopt])
+AC_ARG_VAR([GETOPT], [location of gnu-getopt, see --with-gnu-getopt; e.g. /usr/local/opt/gnu-getopt/bin/getopt])
+AC_ARG_WITH([gnu-getopt], [AS_HELP_STRING([--with-gnu-getopt=path], [
+	Location of the enhanced GNU getopt program])], [
+], [
+	with_gnu_getopt=$GETOPT
+])
+
+AC_MSG_CHECKING([for GNU getopt])
+$with_gnu_getopt --test >/dev/null
+AS_IF([test $? -ne 4], [
+	AC_MSG_RESULT([no])
+	AC_MSG_ERROR([$with_gnu_getopt looks like the BSD version, please provide the path to the GNU version --with-gnu-getopt])
+], [
+	AC_MSG_RESULT([yes, $with_gnu_getopt])
+	AC_SUBST([GETOPT], [$with_gnu_getopt])
+])
+
+AC_PROG_AWK
+AC_PATH_PROG([AWK_PATH], [$AWK], [/bin/$AWK])
+
+AC_CHECK_PROGS([SETSID], [setsid], [nothing])
+AC_ARG_VAR([SETSID], [location of a setsid program; a simple replacement will be built if none found or provided])
+AS_IF([test "$SETSID" = nothing], [
+	SETSID="\$BTR_BINDIR/btr-setsid"
+	AC_PROG_CC
+	AC_CONFIG_FILES([bin/Makefile])
+], [:]);
+
+AC_CHECK_PROGS([NPROC], [nproc sysctl], [nothing])
+AC_MSG_CHECKING([for number of cores])
+AS_CASE([$NPROC],
+	[nproc], [
+		BTR_CPUS=$(nproc)
+	],
+	[sysctl], [
+		BTR_CPUS=$(sysctl -n hw.ncpu 2>/dev/null || echo 1)
+	],
+	[
+		BTR_CPUS=1
+	]
+)
+AC_MSG_RESULT([$BTR_CPUS])
+AC_SUBST([BTR_CPUS], [$BTR_CPUS])
+
 AC_MSG_CHECKING([for bin/ scripts]);
-	BTR_BIN=$(find $srcdir/bin -type f -perm -a=x | xargs)
+	BTR_BIN=$(find $srcdir/bin -type f -perm -a=x | sed 's/\.in$//' | xargs)
 AC_MSG_RESULT([$BTR_BIN])
 AC_SUBST([BTR_BIN], [$BTR_BIN])
 
 AC_MSG_CHECKING([for share/ scripts])
-	BTR_SCRIPTS=$(find $srcdir/share/btr -type f -perm -a=x | xargs)
+	BTR_SCRIPTS=$(find $srcdir/share/btr -type f -perm -a=x | sed 's/\.in$//' | xargs)
 AC_MSG_RESULT([$BTR_SCRIPTS])
 AC_SUBST([BTR_SCRIPTS], [$BTR_SCRIPTS])
 
 AC_MSG_CHECKING([for share/ data])
-	BTR_SHARE=$(find $srcdir/share/btr -type f ! -perm -a=x | xargs)
+	BTR_SHARE=$(find $srcdir/share/btr -type f ! -perm -a=x | sed 's/\.in$//' | xargs)
 AC_MSG_RESULT([$BTR_SHARE])
 AC_SUBST([BTR_SHARE], [$BTR_SHARE])
 
+AC_CONFIG_FILES([bin/btrd], [chmod +x bin/btrd])
+AC_CONFIG_FILES([share/btr/opt.awk], [chmod +x share/btr/opt.awk])
+AC_CONFIG_FILES([share/btr/common.sh], [chmod +x share/btr/common.sh])
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT
+
+dnl vim: noet
diff --git a/share/btr/btr.sh b/share/btr/btr.sh
index 04ac847..518afd1 100755
--- a/share/btr/btr.sh
+++ b/share/btr/btr.sh
@@ -1,14 +1,14 @@
 #!/bin/sh
 
-function btr-setup {
+function btr_setup {
 	if test -z "$BTR_SOURCE_RULES" -o -z "$BTR_BUILD_RULES" -o -z "$BTR_REPORT_RULES"
 	then
-		btr-banner
-		btr-help
+		btr_banner
+		btr_help
 	fi
 
-	btr-setup-verbosity ${1:-true}
-	btr-setup-rundir
+	btr_setup_verbosity ${1:-true}
+	btr_setup_rundir
 
 	export BTR_SOURCE_RULES BTR_BUILD_RULES BTR_REPORT_RULES
 	test -z "$BTR_SOURCE_ARGS"  || export BTR_SOURCE_ARGS
@@ -17,7 +17,7 @@ function btr-setup {
 	test -z "$BTR_BUILD_CLEAN"  || export BTR_BUILD_CLEAN
 	test -z "$BTR_TEST_ARGS"    || export BTR_TEST_ARGS
 	test -z "$BTR_REPORT_ARGS"  || export BTR_REPORT_ARGS
-	BTR_REPO=$(basename $(sed -re 's~^.*[/:#]~~' <<<"$BTR_SOURCE_ARGS") .git)
+	BTR_REPO=$(basename $(sed 's~^.*[/:#]~~' <<<"$BTR_SOURCE_ARGS") .git)
 	BTR_SAFE_BRANCH=$(tr ":/" "_" <<<$(basename "$BTR_BRANCH"))
 	export BTR_REPO BTR_BRANCH BTR_SAFE_BRANCH
 
@@ -38,9 +38,9 @@ function btr-setup {
 	export BTR_LAST_REPORT=$(basename $(ls -t "$BTR_RUNDIR/$BTR_LOG_DIR/test@"* 2>/dev/null | head -n1) 2>/dev/null)
 	export BTR_REPORT="$BTR_LOG_DIR/report@$BTR_DATE.log"
 }
-export -f btr-setup
+export -f btr_setup
 
-function btr-conf-show {
+function btr_conf_show {
 	echo
 	echo "# Configuration:"
 	echo
@@ -72,15 +72,15 @@ function btr-conf-show {
 	echo "BTR_LAST_REPORT    = $BTR_LAST_REPORT"
 	echo
 }
-export -f btr-conf-show
+export -f btr_conf_show
 
-function btr-run {
+function btr_run {
 	set -e
-	make -e $BTR_SILENT_FLAG -C $BTR_RUNDIR -f $BTR_LIBDIR/source/$BTR_SOURCE_RULES.mk
-	make -e $BTR_SILENT_FLAG -C $BTR_RUNDIR -f $BTR_LIBDIR/build/$BTR_BUILD_RULES.mk
-	make -e $BTR_SILENT_FLAG -C $BTR_RUNDIR -f $BTR_LIBDIR/report/$BTR_REPORT_RULES.mk
+	make -e $BTR_SILENT_FLAG -C $BTR_RUNDIR -f $(pwd)/$BTR_LIBDIR/source/$BTR_SOURCE_RULES.mk
+	make -e $BTR_SILENT_FLAG -C $BTR_RUNDIR -f $(pwd)/$BTR_LIBDIR/build/$BTR_BUILD_RULES.mk
+	make -e $BTR_SILENT_FLAG -C $BTR_RUNDIR -f $(pwd)/$BTR_LIBDIR/report/$BTR_REPORT_RULES.mk
 	set +e
 }
-export -f btr-run
+export -f btr_run
 
 # vim: noet
diff --git a/share/btr/btrc.args b/share/btr/btrc.args
index 9526539..ea25776 100644
--- a/share/btr/btrc.args
+++ b/share/btr/btrc.args
@@ -1,5 +1,4 @@
 [action]	s[t[at[us]]]  Show the status of the build\\nr[un]         Make a BTR run\\nc[anc[el]]    Cancel currently running job\\nt[erm[inate]] Terminate the BTR daemon
 
 <build>	The build id of the `btrd` daemon.\\nUsually similar to $repo@$branch[-$suffix].
-
 # vim: noet ts=24 sw=24
diff --git a/share/btr/btrc.sh b/share/btr/btrc.sh
index 8a38bb3..a230318 100755
--- a/share/btr/btrc.sh
+++ b/share/btr/btrc.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-function btrc-parseargs {
+function btrc_parseargs {
 	eval set -- "$BTR_EXTRA_ARGS"
 	while test $# -gt 0
 	do
@@ -30,13 +30,13 @@ function btrc-parseargs {
 	done
 }
 
-function btrc-setup {
-	btrc-parseargs
+function btrc_setup {
+	btrc_parseargs
 	
 	if test -z "$BTR_BUILD"
 	then
-		btr-banner
-		btr-help
+		btr_banner
+		btr_help
 	fi
 	
 	if test -z "$BTR_ACTION"
@@ -44,8 +44,8 @@ function btrc-setup {
 		BTR_ACTION=status
 	fi
 	
-	btr-setup-rundir
-	btr-setup-verbosity false
+	btr_setup_rundir
+	btr_setup_verbosity false
 	
 	BTR_PIDFILE="$BTR_RUNDIR/$BTR_BUILD.pid"
 	BTR_LOGFILE="$BTR_RUNDIR/$BTR_BUILD.log"
@@ -63,9 +63,9 @@ function btrc-setup {
 		error "Could not find btrd pid file of '$BTR_BUILD' in $BTR_RUNDIR."
 	fi
 }
-export -f btrc-setup
+export -f btrc_setup
 
-function btrc-signal {
+function btrc_signal {
 	local sig=$1
 	local pid=$(cat "$BTR_PIDFILE")
 	kill -s $sig $pid
@@ -82,7 +82,7 @@ function btrc-signal {
 		;;
 	esac
 }
-export -f btrc-signal
+export -f btrc_signal
 
 
 # vim: noet
diff --git a/share/btr/btrd.sh b/share/btr/btrd.sh
index 725f0e4..77aa951 100755
--- a/share/btr/btrd.sh
+++ b/share/btr/btrd.sh
@@ -1,49 +1,48 @@
 #!/bin/bash
 
-function btrd-start {
-	btrd-cancel
+function btrd_start {
+	btrd_cancel
 	BTR_DATE=$(date +%Y%m%d%H%M%S)
-	btr-setup
-	btr-run &
+	btr_setup
+	btr_run &
 	BTR_WORKER=$!
 }
-export -f btrd-start
+export -f btrd_start
 
-function btrd-cancel {
-	if btrd-worker-started
+function btrd_cancel {
+	if btrd_worker_started
 	then
-		kill $BTR_WORKER
-		wait $BTR_WORKER
+		btrd_worker_kill
+		btrd_worker_reap
 	fi
-	BTR_WORKER=0
 }
-export -f btrd-cancel
+export -f btrd_cancel
 
-function btrd-stop {
+function btrd_stop {
 	BTR_DAEMON=false
 }
-export -f btrd-stop
+export -f btrd_stop
 
-function btrd-ctime {
+function btrd_ctime {
 	stat -c %y "$1"
 }
-export -f btrd-ctime
+export -f btrd_ctime
 
-function btrd-fsize {
+function btrd_fsize {
 	local bytes=$(stat -c %s "$1")
 }
-export -f btrd-fsize
+export -f btrd_fsize
 
-function btrd-status {
+function btrd_status {
 	echo "BTR_BUILD='$BTR_BUILD'"
 	echo "BTR_SERVER='$BTR_SERVER'"
 	echo "BTR_PIDFILE='$BTR_PIDFILE'"
 	echo "BTR_LOGFILE='$BTR_LOGFILE'"
 	echo "BTR_COMFILE='$BTR_COMFILE'"
 }
-export -f btrd-status
+export -f btrd_status
 
-function btrd-logrotate {
+function btrd_logrotate {
 	local i=1
 	local f="$BTR_LOGFILE"
 	
@@ -57,28 +56,28 @@ function btrd-logrotate {
 	fi
 	
 }
-export -f btrd-logrotate
+export -f btrd_logrotate
 
-function btrd-worker-started {
+function btrd_worker_started {
 	test "$BTR_WORKER" -gt 1
 }
-export -f btrd-worker-started
+export -f btrd_worker_started
 
-function btrd-worker-running {
+function btrd_worker_running {
 	kill -s 0 $BTR_WORKER
 }
-export -f btrd-worker-running
+export -f btrd_worker_running
 
-function btrd-worker-reap {
+function btrd_worker_reap {
 	wait $BTR_WORKER
 	BTR_WORKER=0
 }
-export -f btrd-worker-reap
+export -f btrd_worker_reap
 
-function btrd-worker-kill {
+function btrd_worker_kill {
 	kill $BTR_WORKER
 }
-export -f btrd-worker-kill
+export -f btrd_worker_kill
  
 BTR_DAEMON=true
 BTR_WORKER=0
@@ -89,29 +88,35 @@ BTR_COMFILE="$BTR_RUNDIR/$BTR_BUILD.socket"
 
 export BTR_DAEMON BTR_WORKER BTR_SERVER BTR_PIDFILE BTR_LOGFILE BTR_COMFILE
 
-btrd-logrotate
+btrd_logrotate
 
 exec >"$BTR_LOGFILE" 2>&1
 echo $$ >"$BTR_PIDFILE"
 
-ncat -lkU -c btrd-status "$BTR_COMFILE" &
+# see https://github.com/nmap/nmap/issues/193
+if test $(uname -s) = Darwin; then
+	echo $(($(cksum <<<"$BTR_BUILD" | cut -d" " -f 1) % 64511 + 1024)) > "$BTR_COMFILE"
+	ncat -nlkc btrd_status 127.0.0.1 $(cat "$BTR_COMFILE") &
+else
+	ncat -nlkc btrd_status -U "$BTR_COMFILE" &
+fi
 BTR_SERVER=$!
 
-trap btrd-start HUP
-trap btrd-cancel INT
-trap btrd-stop TERM
+trap btrd_start HUP
+trap btrd_cancel INT
+trap btrd_stop TERM
 
 while $BTR_DAEMON
 do
-	if btrd-worker-started && btrd-worker-running
+	if btrd_worker_started && btrd_worker_running
 	then
-		btrd-worker-reap
+		btrd_worker_reap
 	else
 		kill -s STOP $$
 	fi
 done
 
-btrd-cancel
+btrd_cancel
 
 if test "$BTR_SERVER" -gt 1
 then
diff --git a/share/btr/common.sh b/share/btr/common.sh.in
similarity index 77%
rename from share/btr/common.sh
rename to share/btr/common.sh.in
index 88f522e..8c8b7e8 100755
--- a/share/btr/common.sh
+++ b/share/btr/common.sh.in
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 export BTR_DATE=$(date +%Y%m%d%H%M%S)
-export BTR_CPUS=${CPUS:-$(nproc)}
+export BTR_CPUS=${CPUS:-@BTR_CPUS@}
 export BTR_PROG=$(basename "$0")
 export BTR_QUIET=false
 export BTR_VERBOSE=false
@@ -13,16 +13,16 @@ function error {
 }
 export -f error
 
-function btr-banner {
-	echo "$BTR_PROG v0.4.0, (c) Michael Wallner <mike@php.net>"
+function btr_banner {
+	echo "$BTR_PROG v@PACKAGE_VERSION@, (c) Michael Wallner <mike@php.net>"
 	if test "$BTR_BANNER"
 	then
 		echo "$BTR_BANNER"
 	fi
 }
-export -f btr-banner
+export -f btr_banner
 
-function btr-confirm {
+function btr_confirm {
 	local CONTINUE
 	if ! $BTR_FORCEYES
 	then
@@ -39,31 +39,43 @@ function btr-confirm {
 		esac
 	fi
 }
-export -f btr-confirm
+export -f btr_confirm
 
-function btr-setup-rundir {
+function btr_setup_rundir {
 	local default_rundir="${1:-/tmp/btr}"
-	
+
 	if test -z "$BTR_RUNDIR"
 	then
 		export BTR_RUNDIR="$default_rundir"
 	else
-		export BTR_RUNDIR=$(realpath "$BTR_RUNDIR")
+		export BTR_RUNDIR
 	fi
-	
+
 	mkdir -p "$BTR_RUNDIR" || error "Could not create directory '$BTR_RUNDIR'"
 }
-export -f btr-setup-rundir
+export -f btr_setup_rundir
 
-function btr-setup-verbosity {
+btr_verbose_echo_n=false
+function btr_verbose_echo {
+	if test "$1" != "-n"; then
+		$btr_verbose_echo_n || echo
+		btr_verbose_echo_n=false
+	else
+		btr_verbose_echo_n=true
+	fi
+	echo "$@"
+}
+export -f btr_verbose_echo
+
+function btr_setup_verbosity {
 	local for_make=${1:-false}
-	
+
 	if ${BTR_VERBOSE:-false}
 	then
 		BTR_QUIET_FLAG=
 		BTR_SILENT_FLAG=
 		BTR_VERBOSE_FLAG="-v"
-		SAY="echo; echo"
+		SAY="btr_verbose_echo"
 	elif $BTR_QUIET
 	then
 		BTR_QUIET_FLAG="-q"
@@ -76,21 +88,21 @@ function btr-setup-verbosity {
 		BTR_VERBOSE_FLAG=
 		SAY="echo"
 	fi
-	
+
 	if $for_make
 	then
 		SAY="@$SAY"
 	fi
-	
+
 	export BTR_QUIET BTR_VERBOSE BTR_FORCEYES BTR_QUIET_FLAG BTR_SILENT_FLAG BTR_VERBOSE_FLAG SAY
 }
-export -f btr-setup-verbosity
+export -f btr_setup_verbosity
 
-function btr-shortoptions {
+function btr_shortoptions {
 	(
 		local f
 		local e
-		
+
 		for f in common $BTR_PROG
 		do
 			for e in flags opts
@@ -100,13 +112,13 @@ function btr-shortoptions {
 		done
 	) | xargs | tr -d " "
 }
-export -f btr-shortoptions
+export -f btr_shortoptions
 
-function btr-longoptions {
+function btr_longoptions {
 	(
 		local f
 		local e
-		
+
 		for f in common $BTR_PROG
 		do
 			for e in flags opts
@@ -114,24 +126,24 @@ function btr-longoptions {
 				test -e "$BTR_LIBDIR/$f.$e" && cut -sf2 <"$BTR_LIBDIR/$f.$e"
 			done
 		done
-	)  | sed -r -e 's/(:+).*/\1/' | xargs | tr " " ","
+	)  | sed 's/\(:\).*/\1/' | xargs | tr " " ","
 }
-export -f btr-longoptions
+export -f btr_longoptions
 
-function btr-flags {
+function btr_flags {
 	(
 		local f
 		local e
-		
+
 		for f in common $BTR_PROG
 		do
 			test -e "$BTR_LIBDIR/$f.flags" && cut -sf1 <"$BTR_LIBDIR/$f.flags"
 		done
 	) | xargs | tr -d " "
 }
-export -f btr-flags
+export -f btr_flags
 
-function btr-help-options {
+function btr_help_options {
 	local f o=$(
 		for f in common $BTR_PROG
 		do
@@ -152,42 +164,43 @@ function btr-help-options {
 		echo "$o"
 	fi
 }
-export -f btr-help-options
+export -f btr_help_options
 
-function btr-help-args {
+function btr_help_args {
 	local a d l
-	
+
 	if test -e "$BTR_LIBDIR/$BTR_PROG.args"
 	then
 		echo
 		echo "  Arguments:"
-		while read a d
+		sed -e 's/#.*//' -e '/^$/d' < "$BTR_LIBDIR/$BTR_PROG.args" | while read a d
 		do
+			test -z "$a" && continue
 			printf "%b\n" "$d" | fold -sw46 | while read l
 			do
 				printf "    %-16s %s\n" "$a" "$l"
 				a=
 			done
 			echo
-		done <"$BTR_LIBDIR/$BTR_PROG.args"
+		done
 	fi
 }
-export -f btr-help-args
+export -f btr_help_args
 
-function btr-args {
+function btr_args {
 	if test -e "$BTR_LIBDIR/$BTR_PROG.args"
 	then
 		cut -sf1 <"$BTR_LIBDIR/$BTR_PROG.args" | xargs
 	fi
 }
-export -f btr-args
+export -f btr_args
 
-function btr-help {
+function btr_help {
 	echo
-	echo "Usage: $BTR_PROG [-$(btr-flags)] [<options>]" $(btr-args)
-	btr-help-options flags
-	btr-help-options opts
-	btr-help-args
+	echo "Usage: $BTR_PROG [-$(btr_flags)] [<options>]" $(btr_args)
+	btr_help_options flags
+	btr_help_options opts
+	btr_help_args
 	if test $BTR_PROG != "btrc"
 	then
 	echo
@@ -209,14 +222,14 @@ function btr-help {
 	fi
 	exit
 }
-export -f btr-help
+export -f btr_help
 
-function btr-parseopts {
-	local shortoptions="$(btr-shortoptions common btr-flags btr-options)"
-	local longoptions="$(btr-longoptions common btr-flags btr-options)"
+function btr_parseopts {
+	local shortoptions="$(btr_shortoptions common btr-flags btr-options)"
+	local longoptions="$(btr_longoptions common btr-flags btr-options)"
 	local options
-	
-	options=$(getopt \
+
+	options=$(@GETOPT@ \
 		--name $BTR_PROG \
 		--options "$shortoptions" \
 		--longoptions "$longoptions" \
@@ -226,15 +239,15 @@ function btr-parseopts {
 	then
 		btr-help
 	fi
-	
+
 	eval set -- "$options"
-	
+
 	while test $# -gt 0
 	do
 		case "$1" in
 			-h|--help)
-				btr-banner
-				btr-help
+				btr_banner
+				btr_help
 				;;
 			-v|--verbose)
 				BTR_QUIET=false
@@ -312,9 +325,9 @@ function btr-parseopts {
 		shift
 	done
 }
-export -f btr-parseopts
+export -f btr_parseopts
 
-function btr-conf-dump {
+function btr_conf_dump {
 	echo "BTR_QUIET='$BTR_QUIET'"
 	echo "BTR_VERBOSE='$BTR_VEROSE'"
 	echo "BTR_FORCEYES='$BTR_FORCEYES'"
@@ -331,6 +344,6 @@ function btr-conf-dump {
 	echo "BTR_REPORT_RULES='$BTR_REPORT_RULES'"
 	test ${BTR_REPORT_ARGS+defined} && echo "BTR_REPORT_ARGS='$BTR_REPORT_ARGS'"
 }
-export -f btr-conf-dump
+export -f btr_conf_dump
 
 # vim: noet
diff --git a/share/btr/opt.awk b/share/btr/opt.awk.in
similarity index 88%
rename from share/btr/opt.awk
rename to share/btr/opt.awk.in
index cdc0b76..e9ed958 100755
--- a/share/btr/opt.awk
+++ b/share/btr/opt.awk.in
@@ -1,4 +1,4 @@
-#!/bin/awk -f
+#!@AWK_PATH@ -f
 
 BEGIN {
 	FS="\t"
@@ -17,3 +17,5 @@ BEGIN {
 		printf "    -%s, --%-24s %s\n", $1, $2, $3
 	}
 }
+
+# vim: noet
-- 
2.30.2