1 files changed, 271 insertions, 0 deletions
diff --git a/gen/mk.sh b/gen/mk.sh
new file mode 100644
index 00000000..bbf8c8c1
--- /dev/null
+++ b/gen/mk.sh
@@ -0,0 +1,271 @@
+#!/bin/sh
+
+TOPDIR=$(dirname $0)
+DEPS=${TOPDIR}/.deps
+SRCDIR=${TOPDIR}/src
+
+classify_source () {
+	NAME=$(basename $1 .c)
+
+	if grep -q "^REFERENCE(" $1; then
+		echo REFERENCE
+	elif grep -q "^#define ${NAME}[ (]" $1; then
+		echo MACRO
+	elif grep -q "#undef ${NAME}" $1; then
+		echo MACRO
+	elif grep -q '^typedef .*(\*' $1; then
+		echo FNTYPE
+	elif grep -q "^typedef " $1; then
+		echo TYPE
+	elif grep -q "^struct (^ )*;$" $1; then
+		echo TYPE
+	elif grep -q "^typedef .*{$" $1; then
+		echo TYPE_LONG
+	elif grep -q "^struct.*{" $1; then
+		echo RECORD
+	elif grep -q "^union.*{" $1; then
+		echo RECORD
+	elif grep -q "^[A-Za-z_].*[ \*]${NAME}[[;]" $1; then
+		echo EXTERN
+	elif grep -q 'TGFN' $1; then
+		echo TGFN
+	else
+		echo FUNCTION
+	fi
+}
+
+version_guard () {
+	parsed=/tmp/$(basename $1).v
+	grep -F -e 'STDC(' -e 'POSIX(' -e 'XOPEN(' $1 | sort | m4 $(dirname $0)/ftm.m4 - | grep . > $parsed
+	lines=$(wc -l $parsed | cut -f1 -d' ')
+
+	if [ $lines -ne 0 ]; then
+		printf '#if'
+		loop=1
+		while [ $loop -lt $lines ]; do
+			printf '\t(%s) || \\\n' "$(sed -ne "${loop}p;q" $parsed)"
+			loop=$((loop + 1))
+		done
+
+		printf '\t(%s)\n' "$(sed -ne "${loop}p" $parsed)"
+	fi
+
+	rm -f $parsed
+}
+
+get_declaration () {
+	case ${2:-$(classify_source $1)} in
+
+	REFERENCE)
+		ref="$(grep -F 'REFERENCE(' $1 | m4 -DREFERENCE='$1')"
+		if (echo "$ref" | grep -q '<.*>'); then
+			echo "#include $ref"
+		else
+			get_declaration "src/${ref}"
+		fi
+		;;
+
+	MACRO)
+		if ! (grep -q '#undef' $1 && grep -q 'MAY-BE-UNDEF' $1); then
+			grep -E '^(#(if|def|undef|el|end)|	)' $1
+		fi
+		;;
+
+	TYPE|TYPE_LONG|RECORD|FNTYPE)
+		base=$(basename $1 .c)
+		printf '#ifndef __TYPE_%s_DEFINED__\n#define __TYPE_%s_DEFINED__\n' "$base" "$base"
+
+		if grep -q '^#if' $1; then
+			sed -ne '/^#if/,/#endif/p' $1
+		elif grep -qE '^(typedef|struct|union) .*\{' $1; then
+			sed -ne '/{$/,/^}/p' $1
+		elif grep -qE '^(typedef|struct|union) .*[^;]$' $1; then
+			grep -E '^(typedef|struct|union|	)' $1
+		else
+			grep -E '^(typedef|struct|union) ' $1
+		fi
+
+		printf '#endif\n\n'
+		;;
+
+	EXTERN)
+		echo "extern $(grep '^[a-zA-Z_].*;$' $1)"
+		;;
+
+	FUNCTION)
+		echo "$(grep '^[a-zA-Z_].*)' $1 | head -n1);"
+		;;
+
+	TGFN)
+		echo "$(grep 'TGFN.*)$' $1 | m4 -DTGFN='$1' -DTYPE='double');"
+		echo "$(grep 'TGFN.*)$' $1 | m4 -DTGFN='$1f' -DTYPE='float');"
+		echo "$(grep 'TGFN.*)$' $1 | m4 -DTGFN='$1l' -DTYPE='long double');"
+		;;
+
+	*)
+		# unknown type, so try guessing
+		get_declaration $1
+		;;
+
+	esac
+}
+
+stdc_base() {
+	(grep 'STDC(' $1 | m4 -DSTDC='$1') || echo 0
+}
+
+posix_base() {
+	(grep 'POSIX(' $1 | m4 -DPOSIX='$1') || echo 0
+}
+
+xopen_base() {
+	(grep 'XOPEN(' $1 | m4 -DXOPEN='$1') || echo 0
+}
+
+find_all() {
+	rm -rf "${DEPS}"
+	mkdir -p "${DEPS}"
+	find "${SRCDIR}" -name \*.c > "${DEPS}/all.c"
+	find "${SRCDIR}" -name \*.ref > "${DEPS}/all.ref"
+	find "${SRCDIR}" -name \*.s > "${DEPS}/all.s"
+	grep '#include <.*>' $(cat "${DEPS}/all.c" "${DEPS}/all.ref") |
+		sed 's/^.*<\(.*\.h\)>.*/\1/' | sort -u > "${DEPS}/all.h"
+}
+
+version_sources() {
+	for file in $(cat "${DEPS}/all.c" "${DEPS}/all.ref"); do
+		printf '%s\n' "$file"
+		c_version=$(stdc_base "${file}")
+		p_version=$(posix_base "${file}")
+		x_version=$(xopen_base "${file}")
+
+		if [ -n "${c_version}" ]; then
+			mkdir -p "${DEPS}/c.${c_version}"
+			echo "$file" >> "${DEPS}/c.${c_version}/sources"
+		fi
+
+		if [ -n "${p_version}" ]; then
+			mkdir -p "${DEPS}/p.${p_version}"
+			echo "$file" >> "${DEPS}/p.${p_version}/sources"
+		fi
+
+		if [ -n "${x_version}" ]; then
+			mkdir -p "${DEPS}/x.${x_version}"
+			echo "$file" >> "${DEPS}/x.${x_version}/sources"
+		fi
+	done
+}
+
+make_headers_mk() {
+	if ! [ -f "${DEPS}/all.h" ]; then
+		find_all
+	fi
+
+	rm -f "${TOPDIR}/.headers.mk"
+	printf '.POSIX:\n.DEFAULT: headers\n\n' > "${TOPDIR}/.headers.mk"
+	printf 'include .config.mk\n\n' >> "${TOPDIR}/.headers.mk"
+
+	for header in $(cat "${DEPS}/all.h"); do
+		printf 'Building dependencies for <%s>\n' "$header"
+		printf '$(INCDIR)/%s: mkh.sh ' "$header" >> "${TOPDIR}/.headers.mk"
+		mkdir -p $(dirname "${TOPDIR}/.deps/h/${header}.deps")
+		grep -l "#include <${header}>" $(cat "${DEPS}/all.c" "${DEPS}/all.ref") > "${TOPDIR}/.deps/h/${header}.deps"
+		sed -e "s#${SRCDIR}#\$(SRCDIR)#" < "${TOPDIR}/.deps/h/${header}.deps" | tr '\n' ' ' >> "${TOPDIR}/.headers.mk"
+		printf '\n\tINCDIR=$(INCDIR) sh mkh.sh $(INCDIR)/%s\n\n' "${header}" >> "${TOPDIR}/.headers.mk"
+	done
+
+	printf 'headers: ' >> "${TOPDIR}/.headers.mk"
+	for header in $(cat "${DEPS}/all.h"); do
+		printf ' \\\n\t$(INCDIR)/%s' "$header" >> "${TOPDIR}/.headers.mk"
+	done
+
+	printf '\n' >> "${TOPDIR}/.headers.mk"
+}
+
+make_deps_mk() {
+	if ! [ -f "${DEPS}/all.c" ]; then
+		find_all
+	fi
+
+	rm -f "${TOPDIR}/.deps.mk"
+	rm -f "${DEPS}"/lib*
+
+	printf '.POSIX:\n.SILENT:\ndefault: all\n\n' > "${TOPDIR}/.deps.mk"
+	printf 'include .config.mk\n\n' >> "${TOPDIR}/.deps.mk"
+	printf 'BASE_CFLAGS=-I$(INCDIR) -Isrc -fno-builtin -nostdinc\n' >> "${TOPDIR}/.deps.mk"
+	printf '\n' >> "${TOPDIR}/.deps.mk"
+
+	printf '.POSIX:\nlibc_C_0_OBJS=' > "${DEPS}/libc.C_0"
+	# Assume all assembly is useful regardless of standard version
+	for file in $(sed -e 's/\.[^.]*\.s$/.ARCH.s/g' .deps/all.s | sort -u); do
+		BASE=$(basename $file .ARCH.s)
+		SRC=$(echo $file | sed -e 's/\.ARCH\./.$(ARCHITECTURE)-$(WORDSIZE)./')
+		printf 'libc.a($(OBJDIR)/%s.$(ARCHITECTURE)-$(WORDSIZE).o): $(OBJDIR)/%s.$(ARCHITECTURE)-$(WORDSIZE).o\n' $BASE $BASE >> "${TOPDIR}/.deps.mk"
+		printf ' \\\n\tlibc.a($(OBJDIR)/%s.$(ARCHITECTURE)-$(WORDSIZE).o)' $BASE >> "${DEPS}/libc.C_0"
+		printf '$(OBJDIR)/%s.$(ARCHITECTURE)-$(WORDSIZE).o: %s\n' $BASE $SRC >> "${TOPDIR}/.deps.mk"
+		printf '\t$(CC) $(BASE_CFLAGS) $(CFLAGS) -c %s -o $@\n' $SRC >> "${TOPDIR}/.deps.mk"
+		printf '\t echo [AS] $@\n\n' >> "${TOPDIR}/.deps.mk"
+	done
+
+	for file in $(cat "${DEPS}/all.c"); do
+		printf 'Building dependencies from %s\n' "$file"
+		type=$(classify_source "${file}")
+
+		if [ ${type} = EXTERN -o ${type} = TGFN -o ${type} = FUNCTION ]; then
+			LINK=$(grep -F 'LINK(' $file | m4 -DLINK='$1')
+			LIB=lib${LINK:-c}
+			OBJ=$(basename $file .c).o
+
+			printf '%s.a(%s): $(OBJDIR)/%s\n' $LIB $OBJ $OBJ >> "${TOPDIR}/.deps.mk"
+			printf '$(OBJDIR)/%s: %s' "$OBJ" "$file" >> "${TOPDIR}/.deps.mk"
+			#for header in $(grep '#include' "${file}"); do
+				#printf ' \\\n\t$(INCDIR)/%s' "$header" >> "${TOPDIR}/.deps.mk"
+			#done
+			printf '\n\t$(CC) $(BASE_CFLAGS) $(CFLAGS) -c %s -o $@\n' "$file" >> "${TOPDIR}/.deps.mk"
+			printf '\techo [CC] $@\n' >> "${TOPDIR}/.deps.mk"
+
+			cver=$(stdc_base $file)
+			pver=$(posix_base $file)
+			xver=$(xopen_base $file)
+
+			if [ -n "$cver" ]; then
+				if ! [ -f "${DEPS}/${LIB}.C_${cver}" ]; then
+					printf '.POSIX:\n%s_C_%s_OBJS=' "${LIB}" "${cver}" > "${DEPS}/${LIB}.C_${cver}"
+				fi
+				printf ' \\\n\t%s.a($(OBJDIR)/%s)' $LIB $OBJ >> "${DEPS}/${LIB}.C_${cver}"
+			fi
+
+			if [ -n "$pver" ]; then
+				if ! [ -f "${DEPS}/${LIB}.POSIX_${pver}" ]; then
+					printf '.POSIX:\n%s_POSIX_%s_OBJS=' "${LIB}" "${pver}" > "${DEPS}/${LIB}.POSIX_${pver}"
+				fi
+				printf ' \\\n\t%s.a($(OBJDIR)/%s)' $LIB $OBJ >> "${DEPS}/${LIB}.POSIX_${pver}"
+			fi
+
+			if [ -n "$xver" ]; then
+				if ! [ -f "${DEPS}/${LIB}.XOPEN_${xver}" ]; then
+					printf '.POSIX:\n%s_XOPEN_%s_OBJS=' "${LIB}" "${xver}" > "${DEPS}/${LIB}.XOPEN_${xver}"
+				fi
+				printf ' \\\n\t%s.a($(OBJDIR)/%s)' $LIB $OBJ >> "${DEPS}/${LIB}.XOPEN_${xver}"
+			fi
+
+			if [ -z "$cver" ] && [ -z "$pver" ] && [ -z "$xver" ]; then
+				if ! [ -f "${DEPS}/${LIB}.C_0" ]; then
+					printf '.POSIX:\n%s_C_0_OBJS=' "${LIB}" > "${DEPS}/${LIB}.C_0"
+				fi
+				printf ' \\\n\t%s.a($(OBJDIR)/%s)' $LIB $OBJ >> "${DEPS}/${LIB}.C_0"
+			fi
+		fi
+	done
+
+	printf '\n' >> "${TOPDIR}/.deps.mk"
+
+	for libdep in ${DEPS}/lib*; do
+		LIB=$(basename $libdep | sed -e 's/\..*$//')
+		VER=$(basename $libdep | sed -e 's/^.*\.//')
+		echo adding dependencies for $LIB v $VER
+		printf 'include $(TOPDIR)/.deps/%s\n' $(basename $libdep) >> "${TOPDIR}/.deps.mk"
+	done
+
+	printf '\n' >> "${TOPDIR}/.deps.mk"
+}