lua: Make building more generic (build for any arch)

Default version changed from 5.3.5 to 5.3.6.

Added port build options:
 - PORTS_LUA_VERSION - version to download (must be supported by
   respective patches);
 - PORTS_LUA_STACK_SIZE - size of Lua's internal stack;
 - PORTS_LUA_CSTACK_SIZE - size of stack (when using linked lua binary);
 - PORTS_LUA_COMPAT_5_2 - backward compatibility with Lua 5.2;
 - PORTS_LUA_DEBUG - enable debug features, e.g. API checks;
 - PORTS_LUA_INSTALL_TESTS - download and install external Lua test
   scripts;
 - PORTS_LUA_RESTRAIN - disable Lua features which may be used to crash
   the interpreter or perform side-effects in the operating system.

JIRA: NIL-595

lua/build.sh

@@ -2,34 +2,59 @@
 
 set -e
 
-LUA=lua-5.3.5
-PKG_URL="https://www.lua.org/ftp/${LUA}.tar.gz"
-PKG_MIRROR_URL="https://files.phoesys.com/ports/${LUA}.tar.gz"
+version="${PORTS_LUA_VERSION:-5.3.6}"
+archive_filename="lua-${version}.tar.gz"
+tests_version="5.4.6"
 
-b_log "Building lua"
-PREFIX_LUA="${PREFIX_PROJECT}/phoenix-rtos-ports/lua"
-PREFIX_LUA_BUILD="${PREFIX_BUILD}/lua"
-PREFIX_LUA_SRC="${PREFIX_LUA_BUILD}/${LUA}"
+PREFIX_PORT_SRC="${PREFIX_PORT_BUILD}/${version}"
+PREFIX_PORT_TESTS="${PREFIX_PORT_BUILD}/${tests_version}-tests"
 
+b_port_download "https://www.lua.org/ftp/" "${archive_filename}"
 
-mkdir -p "$PREFIX_LUA_BUILD"
-if [ ! -f "$PREFIX_LUA/${LUA}.tar.gz" ]; then
-	if ! wget "$PKG_URL" -P "${PREFIX_LUA}" --no-check-certificate; then
-		wget "$PKG_MIRROR_URL" -P "${PREFIX_LUA}" --no-check-certificate
-	fi
+if [ ! -d "${PREFIX_PORT_SRC}" ]; then
+	echo "Extracting sources from ${archive_filename}"
+	mkdir -p "${PREFIX_PORT_SRC}"
+	tar -axf "${PREFIX_PORT}/${archive_filename}" --strip-components 1 -C "${PREFIX_PORT_SRC}"
 fi
-if [ ! -d "$PREFIX_LUA_SRC" ]; then
-	tar zxf "$PREFIX_LUA/${LUA}.tar.gz" -C "$PREFIX_LUA_BUILD"
-	cp "$PREFIX_LUA/Makefile" "$PREFIX_LUA_SRC/src/"
+
+b_port_apply_patches "${PREFIX_PORT_SRC}" "${version}"
+
+if [ "${PORTS_LUA_RESTRAIN}" = "y" ]; then
+	b_port_apply_patches "${PREFIX_PORT_SRC}" "${version}/restrain"
 fi
 
+mycflags=(
+	${CFLAGS}
+	-DLUAI_MAXSTACK=${PORTS_LUA_STACK_SIZE:-2000}
+)
+
+if [ "${PORTS_LUA_COMPAT_5_2}" = "y" ]; then mycflags+=("-DLUA_COMPAT_5_2"); fi
+if [ "${PORTS_LUA_DEBUG}" = "y" ]; then mycflags+=("-DLUA_USE_APICHECK"); fi
+
+myldflags=(
+	${LDFLAGS}
+	-Wl,-z,stack-size=${PORTS_LUA_CSTACK_SIZE:-4096}
+)
+
 # FIXME: no out-of-tree building
-make -C "$PREFIX_LUA_SRC" posix
+make -C "${PREFIX_PORT_SRC}/src" MYCFLAGS="${mycflags[*]}" MYLDFLAGS="${myldflags[*]}"
+make -C "${PREFIX_PORT_SRC}" install INSTALL_TOP="${PREFIX_BUILD}"
 
-$STRIP -o "$PREFIX_PROG_STRIPPED/lua" "$PREFIX_LUA_SRC/src/lua"
-$STRIP -o "$PREFIX_PROG_STRIPPED/luac" "$PREFIX_LUA_SRC/src/luac"
-cp -a "$PREFIX_LUA_SRC/src/lua" "$PREFIX_PROG/lua"
-cp -a "$PREFIX_LUA_SRC/src/luac" "$PREFIX_PROG/luac"
+$STRIP -o "${PREFIX_PROG_STRIPPED}/lua" "${PREFIX_PROG}/lua"
+$STRIP -o "${PREFIX_PROG_STRIPPED}/luac" "${PREFIX_PROG}/luac"
 
-b_install "$PREFIX_PORTS_INSTALL/lua" /bin
-b_install "$PREFIX_PORTS_INSTALL/luac" /bin
+b_install "${PREFIX_PORTS_INSTALL}/lua" /usr/bin
+b_install "${PREFIX_PORTS_INSTALL}/luac" /usr/bin
+
+if [ "${PORTS_LUA_INSTALL_TESTS}" = "y" ]; then
+	tests_filename="lua-${tests_version}-tests.tar.gz"
+	b_port_download "https://www.lua.org/tests/" "${tests_filename}"
+
+	if [ ! -d "${PREFIX_PORT_TESTS}" ]; then
+		echo "Extracting tests from ${tests_filename}"
+		mkdir -p "${PREFIX_PORT_TESTS}"
+		tar -axf "${PREFIX_PORT}/${tests_filename}" --strip-components 1 -C "${PREFIX_PORT_TESTS}"
+	fi
+
+	b_install "${PREFIX_PORT_TESTS}"/*.lua /usr/share/lua/tests
+fi

lua/checksums.sha256

@@ -0,0 +1,2 @@
+fc5fd69bb8736323f026672b1b7235da613d7177e72558893a0bdcd320466d60 *lua-5.3.6.tar.gz
+63ed5f5bcfd15dfd2f72e04c2f8c10585bb8de9e558df62b335cb9e5c1a4ef34 *lua-5.4.6-tests.tar.gz

lua/patches/5.3.6/01-Makefile.patch

@@ -0,0 +1,68 @@
+diff --git a/Makefile b/Makefile
+index a2820e0..52a1c51 100644
+--- a/Makefile
++++ b/Makefile
+@@ -4,19 +4,16 @@
+ # == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================
+
+ # Your platform. See PLATS for possible values.
+-PLAT= none
++PLAT= posix
+
+ # Where to install. The installation starts in the src and doc directories,
+ # so take care if INSTALL_TOP is not an absolute path. See the local target.
+ # You may want to make INSTALL_LMOD and INSTALL_CMOD consistent with
+ # LUA_ROOT, LUA_LDIR, and LUA_CDIR in luaconf.h.
+ INSTALL_TOP= /usr/local
+-INSTALL_BIN= $(INSTALL_TOP)/bin
++INSTALL_BIN= $(INSTALL_TOP)/prog
+ INSTALL_INC= $(INSTALL_TOP)/include
+ INSTALL_LIB= $(INSTALL_TOP)/lib
+-INSTALL_MAN= $(INSTALL_TOP)/man/man1
+-INSTALL_LMOD= $(INSTALL_TOP)/share/lua/$V
+-INSTALL_CMOD= $(INSTALL_TOP)/lib/lua/$V
+
+ # How to install. If your install program does not support "-p", then
+ # you may have to run ranlib on the installed liblua.a.
+@@ -42,7 +39,6 @@ PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris
+ TO_BIN= lua luac
+ TO_INC= lua.h luaconf.h lualib.h lauxlib.h lua.hpp
+ TO_LIB= liblua.a
+-TO_MAN= lua.1 luac.1
+
+ # Lua version and release.
+ V= 5.3
+@@ -58,17 +54,15 @@ test:	dummy
+ 	src/lua -v
+
+ install: dummy
+-	cd src && $(MKDIR) $(INSTALL_BIN) $(INSTALL_INC) $(INSTALL_LIB) $(INSTALL_MAN) $(INSTALL_LMOD) $(INSTALL_CMOD)
++	cd src && $(MKDIR) $(INSTALL_BIN) $(INSTALL_INC) $(INSTALL_LIB)
+ 	cd src && $(INSTALL_EXEC) $(TO_BIN) $(INSTALL_BIN)
+ 	cd src && $(INSTALL_DATA) $(TO_INC) $(INSTALL_INC)
+ 	cd src && $(INSTALL_DATA) $(TO_LIB) $(INSTALL_LIB)
+-	cd doc && $(INSTALL_DATA) $(TO_MAN) $(INSTALL_MAN)
+
+ uninstall:
+ 	cd src && cd $(INSTALL_BIN) && $(RM) $(TO_BIN)
+ 	cd src && cd $(INSTALL_INC) && $(RM) $(TO_INC)
+ 	cd src && cd $(INSTALL_LIB) && $(RM) $(TO_LIB)
+-	cd doc && cd $(INSTALL_MAN) && $(RM) $(TO_MAN)
+
+ local:
+ 	$(MAKE) install INSTALL_TOP=../install
+@@ -90,14 +84,10 @@ echo:
+ 	@echo "TO_BIN= $(TO_BIN)"
+ 	@echo "TO_INC= $(TO_INC)"
+ 	@echo "TO_LIB= $(TO_LIB)"
+-	@echo "TO_MAN= $(TO_MAN)"
+ 	@echo "INSTALL_TOP= $(INSTALL_TOP)"
+ 	@echo "INSTALL_BIN= $(INSTALL_BIN)"
+ 	@echo "INSTALL_INC= $(INSTALL_INC)"
+ 	@echo "INSTALL_LIB= $(INSTALL_LIB)"
+-	@echo "INSTALL_MAN= $(INSTALL_MAN)"
+-	@echo "INSTALL_LMOD= $(INSTALL_LMOD)"
+-	@echo "INSTALL_CMOD= $(INSTALL_CMOD)"
+ 	@echo "INSTALL_EXEC= $(INSTALL_EXEC)"
+ 	@echo "INSTALL_DATA= $(INSTALL_DATA)"
+

lua/patches/5.3.6/02-src-Makefile.patch

@@ -0,0 +1,48 @@
+diff --git a/src/Makefile b/src/Makefile
+index a13afb9..8e178c7 100644
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -4,26 +4,24 @@
+ # == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================
+
+ # Your platform. See PLATS for possible values.
+-PLAT= none
++PLAT= posix
+
+-CC= gcc -std=gnu99
+-CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS)
+-LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
++CC= $(CROSS)gcc
++# MYCFLAGS and MYLDFLAGS are provided by the caller
++MYLIBS :=
++
++CFLAGS= -std=gnu99 -O2 -Wall -Wextra $(SYSCFLAGS) $(MYCFLAGS)
++LDFLAGS= $(SYSLDFLAGS) $(MYCFLAGS) $(MYLDFLAGS)
+ LIBS= -lm $(SYSLIBS) $(MYLIBS)
+
+-AR= ar rcu
+-RANLIB= ranlib
++AR= $(CROSS)ar rcs
++RANLIB= $(CROSS)ranlib
+ RM= rm -f
+
+ SYSCFLAGS=
+ SYSLDFLAGS=
+ SYSLIBS=
+
+-MYCFLAGS=
+-MYLDFLAGS=
+-MYLIBS=
+-MYOBJS=
+-
+ # == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======
+
+ PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris
+@@ -57,7 +55,6 @@ a:	$(ALL_A)
+
+ $(LUA_A): $(BASE_O)
+ 	$(AR) $@ $(BASE_O)
+-	$(RANLIB) $@
+
+ $(LUA_T): $(LUA_O) $(LUA_A)
+ 	$(CC) -o $@ $(LDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)