Index: arch/posix.h
==================================================================
--- arch/posix.h
+++ arch/posix.h
@@ -57,73 +57,73 @@
 	posix_signal_segfault = 11,
 	posix_signal_pipe = 13,
 	posix_signal_alarm = 14,
 	posix_signal_terminate = 15,
 
-#if KVarch == KA_arch_mips && KVos == KA_os_lin
+#	if KVarch == KA_arch_mips && KVos == KA_os_lin
 	/* for some ungodly reason, some signal
 	 * numbers on MIPS differ from most other
 	 * architectures still in contemporary use */
-	posix_signal_bus = 10,
-	posix_signal_user_a = 16,
-	posix_signal_user_b = 17,
-	posix_signal_child = 18,
-	posix_signal_continue = 25,
-	posix_signal_stop = 23,
-	posix_signal_terminal_stop = 24,
-	posix_signal_tty_input = 26,
-	posix_signal_tty_output = 27,
-	posix_signal_io_urgent = 21,
-	posix_signal_limit_cpu = 30,
-	posix_signal_limit_space = 31,
-	posix_signal_vt_alarm = 28,
-	posix_signal_profile = 29,
-	posix_signal_winch = 20,
-	posix_signal_poll = 22,
-	posix_signal_power = 19,
-#elif KVos == KA_os_lin
+		posix_signal_bus = 10,
+		posix_signal_user_a = 16,
+		posix_signal_user_b = 17,
+		posix_signal_child = 18,
+		posix_signal_continue = 25,
+		posix_signal_stop = 23,
+		posix_signal_terminal_stop = 24,
+		posix_signal_tty_input = 26,
+		posix_signal_tty_output = 27,
+		posix_signal_io_urgent = 21,
+		posix_signal_limit_cpu = 30,
+		posix_signal_limit_space = 31,
+		posix_signal_vt_alarm = 28,
+		posix_signal_profile = 29,
+		posix_signal_winch = 20,
+		posix_signal_poll = 22,
+		posix_signal_power = 19,
+#	elif KVos == KA_os_lin
 	/* x86, ARM, and most others use these
 	 * signal numbers */
-	posix_signal_bus = 7,
-	posix_signal_user_a = 10,
-	posix_signal_user_b = 12,
-	posix_signal_child = 17,
-	posix_signal_continue = 18,
-	posix_signal_stack_fault = 16,
-	posix_signal_stop = 19,
-	posix_signal_terminal_stop = 20,
-	posix_signal_tty_input = 21,
-	posix_signal_tty_output = 22,
-	posix_signal_io_urgent = 23,
-	posix_signal_limit_cpu = 24,
-	posix_signal_limit_space = 25,
-	posix_signal_vt_alarm = 26,
-	posix_signal_profile = 27,
-	posix_signal_winch = 28,
-	posix_signal_poll = 29,
-	posix_signal_power = 30,
-#elif KVos == KA_os_fbsd
-	posix_signal_bus = 10,
-	posix_signal_user_a = 30,
-	posix_signal_user_b = 31,
-	posix_signal_child = 17,
-	posix_signal_continue = 19,
-	posix_signal_stack_fault = 16,
-	posix_signal_stop = 17,
-	posix_signal_terminal_stop = 18,
-	posix_signal_tty_input = 21,
-	posix_signal_tty_output = 22,
-	posix_signal_io_urgent = 16,
-	posix_signal_limit_cpu = 24,
-	posix_signal_limit_space = 25,
-	posix_signal_vt_alarm = 26,
-	posix_signal_profile = 27,
-	posix_signal_winch = 28,
-	posix_signal_info = 29,
-	posix_signal_poll = 23,
-	posix_signal_power = 30,
-#endif
+		posix_signal_bus = 7,
+		posix_signal_user_a = 10,
+		posix_signal_user_b = 12,
+		posix_signal_child = 17,
+		posix_signal_continue = 18,
+		posix_signal_stack_fault = 16,
+		posix_signal_stop = 19,
+		posix_signal_terminal_stop = 20,
+		posix_signal_tty_input = 21,
+		posix_signal_tty_output = 22,
+		posix_signal_io_urgent = 23,
+		posix_signal_limit_cpu = 24,
+		posix_signal_limit_space = 25,
+		posix_signal_vt_alarm = 26,
+		posix_signal_profile = 27,
+		posix_signal_winch = 28,
+		posix_signal_poll = 29,
+		posix_signal_power = 30,
+#	elif KVos == KA_os_fbsd
+		posix_signal_bus = 10,
+		posix_signal_user_a = 30,
+		posix_signal_user_b = 31,
+		posix_signal_child = 17,
+		posix_signal_continue = 19,
+		posix_signal_stack_fault = 16,
+		posix_signal_stop = 17,
+		posix_signal_terminal_stop = 18,
+		posix_signal_tty_input = 21,
+		posix_signal_tty_output = 22,
+		posix_signal_io_urgent = 16,
+		posix_signal_limit_cpu = 24,
+		posix_signal_limit_space = 25,
+		posix_signal_vt_alarm = 26,
+		posix_signal_profile = 27,
+		posix_signal_winch = 28,
+		posix_signal_info = 29,
+		posix_signal_poll = 23,
+		posix_signal_power = 30,
+#	endif
 };
 
 #endif
 #ifdef KFplatform_define_types
 

Index: dist/PKGBUILD
==================================================================
--- dist/PKGBUILD
+++ dist/PKGBUILD
@@ -7,10 +7,20 @@
 source=('https://c.comint.su/libk/tarball/trunk/libk.tar.gz')
 md5sums=(SKIP)
 arch=(i686 x86_64 aarch64 armv7l)
 depends=()
 makedepends=(binutils bash yasm)
+
+# the following fields should be uncommented in release tarballs and in
+# libk build scripts submitted to the AUR or maybe eventually the Arch
+# community repositories.
+
+validpgpkeys=(
+	BA8B6CB87AAF25B4F771C34CD8B3128C48456885
+	1AA9AC700870CC08C8561BF9C24B9CD04DC6AE7F
+)
+
 
 build() {
 	export os=lin library=both
 	case $(uname -m) in
 		# i have no idea why, but the "arch" environment variable name

ADDED   global/cc-invoke.m4
Index: global/cc-invoke.m4
==================================================================
--- global/cc-invoke.m4
+++ global/cc-invoke.m4
@@ -0,0 +1,72 @@
+_libk_shebang_
+define(quot,"'"'$1'"'")dnl
+# generated from /global/cc-invoke.m4 by install.sh
+
+if test "$(echo -n)" = "-n"; then
+	say() { echo $@' \c'; }
+else
+	say() { echo -n $@' '; }
+fi
+
+libk_libs() {
+	if test "$static" != 1; then
+		say quot(_libk_libdir_/kboot.o) quot(-L`'_libk_libdir_) -lk
+	else
+		say quot(_libk_libdir_/libk.a)
+	fi
+}
+
+libk_cflags() {
+	say quot(-I`'_libk_incdir_)
+}
+
+libk_static() {
+	say _libk_libdir_/libk.a
+}
+
+libk_gcc() {
+	say -ffreestanding -nostdlib 
+}
+
+libk_clang() {
+	say -ffreestanding -nostdlibinc
+}
+
+usage() {
+	echo "usage: $0 [flags]"
+	echo "    $0 prints compiler flags necessary to compile libk programs."
+	echo "    in general, you will need three kinds of flag sets:"
+	echo "        linkage flags tell the compiler where to find libk binary libraries"
+	echo "        for the final linking stage."
+	echo "            --libs -l  : emit linkage flags"
+	echo "            --static -s: modify emitted flags for static linking"
+	echo "        compilation flags tell the compiler where to find headers."
+	echo "            --cflags -c: emit compilation flags"
+	echo "        compatibility flags set various compiler-specific options needed to"
+	echo "        compile programs without the traditional C standard library."
+	echo "            --gcc -g  : emit gcc-style compat flags"
+	echo "            --clang -C: emit clang-style compat flags"
+	echo "    $0 handles quoting automatically."
+	exit 64
+}
+
+for a in $@; do
+	case $a in
+		*help|-h) usage ;;
+		*newlines|-n)
+			say() {
+				for l in $@; do
+					echo $l
+				done
+			};;
+		*libs|-l)   fns="$fns libk_libs"   ;;
+		*cflags|-c) fns="$fns libk_cflags" ;;
+		*gcc|-g)    fns="$fns libk_gcc" ;;
+		*clang|-C)  fns="$fns libk_clang" ;;
+		*static|-s) static=1 ;;
+	esac
+done
+
+for f in $fns; do
+	$f
+done

Index: install.sh
==================================================================
--- install.sh
+++ install.sh
@@ -7,12 +7,13 @@
 check prefix 'a directory to install to'
 build="${build:-out}"
 
 bindir="${bindir:-$prefix/bin}"
 libdir="${libdir:-$prefix/lib}"
-incdir="${incdir:-$prefix/include}"
+incdir="${incdir:-$prefix/include/k}"
 sharedir="${sharedir:-$prefix/share}"
+shebang="${shebang:-#!/usr/bin/env bash}"
 
 say "commencing install"
 say " - prefix: $prefix"
 say " - destinations:"
 say "   - binaries → $bindir"
@@ -35,11 +36,11 @@
 install -Dm755 -t "$bindir" "$build/kgraft.attach"
 
 # Includes
 say "installing headers"
 for inc in "$build"/k/*; do
-	install -Dm644 -t "$incdir/k" "$inc"
+	install -Dm644 -t "$incdir" "$inc"
 done
 
 # Documentation
 say "installing documentation"
 for man in "$build"/doc/man/*; do
@@ -49,6 +50,16 @@
 	install -Dm644 -t "$sharedir/doc/libk/html" "$html"
 done
 for pdf in "$build"/doc/pdf/*; do
 	install -Dm644 -t "$sharedir/doc/libk/pdf" "$pdf"
 done
+
+say "building libk-config utility"
+m4 >"$bindir/libk-config" \
+	-D"_libk_bindir_=$bindir" -D"_libk_libdir_=$libdir" \
+	-D"_libk_incdir_=$incdir" -D"_libk_sharedir_=$sharedir" \
+	-D"_libk_shebang_=$shebang" \
+	global/cc-invoke.m4
+
+chmod +x "$bindir/libk-config"
+
 say "install complete"