toolchain: add autoconf-lean

Use it to generate a more comprehensive configure sitefile

Signed-off-by: Felix Fietkau <nbd@nbd.name>

toolchain/Makefile

@@ -29,7 +29,7 @@
 curdir:=toolchain
 
 # subdirectories to descend into
-$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/initial gcc/final $(LIBC) fortify-headers) $(if $(CONFIG_NASM),nasm)
+$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/initial gcc/final $(LIBC) fortify-headers) $(if $(CONFIG_NASM),nasm) autoconf-lean
 
 # builddir dependencies
 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
@@ -48,6 +48,7 @@ ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
   $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/compile
   $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/compile $(curdir)/kernel-headers/compile
   $(curdir)/$(LIBC)/utils/compile:=$(curdir)/gcc/final/compile
+  $(curdir)/autoconf-lean/compile:=$(curdir)/gcc/final/compile
 endif
 
 ifndef DUMP_TARGET_DB

toolchain/autoconf-lean/Makefile

@@ -0,0 +1,65 @@
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=autoconf-lean
+PKG_RELEASE:=1
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_DATE:=2012-09-01
+PKG_SOURCE_URL:=https://github.com/GregorR/autoconf-lean
+PKG_SOURCE_VERSION:=bd81206959881c511b28e16e81b0a281fd15bd02
+
+PKG_HASH:=e728ed296fe9f069a0e005003c3d6b2dde3d9cad453422a10d6558616d304cc8
+
+HOST_FIXUP := autoreconf
+
+HOST_BUILD_PREFIX:=$(TOOLCHAIN_DIR)
+BUILD_DIR_HOST:=$(BUILD_DIR_TOOLCHAIN)
+
+include $(INCLUDE_DIR)/host-build.mk
+
+HOST_CONFIG_SITE:=$(CURDIR)/config.site
+
+CONFIGURE_PATH := config-site-generator
+
+HOST_CONFIGURE_VARS := \
+		$(TARGET_CONFIGURE_OPTS) \
+		CFLAGS="$(TARGET_CFLAGS)" \
+		CXXFLAGS="$(TARGET_CXXFLAGS)" \
+		CPPFLAGS="$(TARGET_CPPFLAGS)" \
+		LDFLAGS="$(TARGET_LDFLAGS)"
+
+HOST_CONFIGURE_ARGS := \
+	--target=$(GNU_TARGET_NAME) \
+	--host=$(GNU_TARGET_NAME) \
+	--build=$(GNU_HOST_NAME) \
+	--program-prefix="" \
+	--program-suffix="" \
+	--prefix=$(TOOLCHAIN_DIR) \
+	--exec-prefix=$(TOOLCHAIN_DIR) \
+	--bindir=$(TOOLCHAIN_DIR)/bin \
+	--sbindir=$(TOOLCHAIN_DIR)/sbin \
+	--libexecdir=$(TOOLCHAIN_DIR)/lib
+
+HOST_MAKE_VARS :=
+
+HOST_MAKE_FLAGS :=
+
+define Host/Configure
+	$(call Host/Configure/Default,,,config-site-generator)
+endef
+
+define Host/Compile
+	$(MAKE) -C $(HOST_BUILD_DIR)/config-site-generator
+endef
+
+define Host/Install
+	grep -v '/' \
+		$(HOST_BUILD_DIR)/config-site-generator/config.site \
+		> $(TOOLCHAIN_DIR)/config.site
+endef
+
+$(eval $(call HostBuild))

toolchain/autoconf-lean/patches/100-remove-unused-checks.patch

@@ -0,0 +1,93 @@
+--- a/config-site-generator/configure.ac
++++ b/config-site-generator/configure.ac
+@@ -31,16 +31,16 @@ AC_PROG_GCC_TRADITIONAL
+ AC_PROG_CXX
+ AC_PROG_CXXCPP
+ AC_PROG_CXX_C_O
+-AC_PROG_OBJC
+-AC_PROG_OBJCPP
+-AC_PROG_OBJCXX
+-AC_PROG_OBJCXXCPP
++#AC_PROG_OBJC
++#AC_PROG_OBJCPP
++#AC_PROG_OBJCXX
++#AC_PROG_OBJCXXCPP
+ #AC_ERLANG_PATH_ERLC
+ #AC_ERLANG_PATH_ERL
+-AC_PROG_F77
+-AC_PROG_FC
+-AC_PROG_F77_C_O
+-AC_PROG_FC_C_O
++#AC_PROG_F77
++#AC_PROG_FC
++#AC_PROG_F77_C_O
++#AC_PROG_FC_C_O
+ #AC_PROG_GO
+ AC_PROG_AWK
+ AC_PROG_GREP
+@@ -52,13 +52,13 @@ AC_PROG_LEX
+ AC_PROG_LN_S
+ AC_PROG_RANLIB
+ AC_PROG_SED
+-AC_PROG_YACC
++#AC_PROG_YACC
+ 
+ AM_PROG_AS
+ 
+ # Checks for system services.
+-AC_PATH_X
+-AC_PATH_XTRA
++#AC_PATH_X
++#AC_PATH_XTRA
+ AC_SYS_INTERPRETER
+ AC_SYS_LARGEFILE
+ AC_SYS_LONG_FILE_NAMES
+@@ -163,27 +163,27 @@ AC_C_FLEXIBLE_ARRAY_MEMBER
+ AC_C_VARARRAYS
+ AC_C_TYPEOF
+ AC_C_PROTOTYPES
+-AC_F77_LIBRARY_LDFLAGS
+-AC_FC_LIBRARY_LDFLAGS
+-AC_F77_DUMMY_MAIN
+-AC_FC_DUMMY_MAIN
+-AC_F77_MAIN
+-AC_FC_MAIN
+-AC_F77_WRAPPERS
+-AC_FC_WRAPPERS
+-AC_F77_FUNC
+-AC_FC_FUNC
+-AC_FC_PP_SRCEXT
+-AC_FC_PP_DEFINE
+-AC_FC_FREEFORM
+-AC_FC_FIXEDFORM
+-AC_FC_LINE_LENGTH
+-AC_FC_CHECK_BOUNDS
+-AC_F77_IMPLICIT_NONE
+-AC_FC_IMPLICIT_NONE
+-AC_FC_MODULE_EXTENSION
+-AC_FC_MODULE_FLAG
+-AC_FC_MODULE_OUTPUT_FLAG
++#AC_F77_LIBRARY_LDFLAGS
++#AC_FC_LIBRARY_LDFLAGS
++#AC_F77_DUMMY_MAIN
++#AC_FC_DUMMY_MAIN
++#AC_F77_MAIN
++#AC_FC_MAIN
++#AC_F77_WRAPPERS
++#AC_FC_WRAPPERS
++#AC_F77_FUNC
++#AC_FC_FUNC
++#AC_FC_PP_SRCEXT
++#AC_FC_PP_DEFINE
++#AC_FC_FREEFORM
++#AC_FC_FIXEDFORM
++#AC_FC_LINE_LENGTH
++#AC_FC_CHECK_BOUNDS
++#AC_F77_IMPLICIT_NONE
++#AC_FC_IMPLICIT_NONE
++#AC_FC_MODULE_EXTENSION
++#AC_FC_MODULE_FLAG
++#AC_FC_MODULE_OUTPUT_FLAG
+ 
+ # Checks for library functions.
+ AC_FUNC_ALLOCA

toolchain/autoconf-lean/patches/120-add-extra-checks.patch

@@ -0,0 +1,48 @@
+--- a/config-site-generator/configure.ac
++++ b/config-site-generator/configure.ac
+@@ -23,6 +23,7 @@ AC_DEFUN([AC_MSG_ERROR], [
+     test -e conftest.dir && rm -rf conftest.dir ])
+ 
+ # Checks for programs.
++AC_PROG_CC
+ AC_PROG_CC_C89
+ AC_PROG_CC_C_O
+ AC_PROG_CPP
+@@ -52,9 +53,11 @@ AC_PROG_LEX
+ AC_PROG_LN_S
+ AC_PROG_RANLIB
+ AC_PROG_SED
++AC_PROG_LEX
+ #AC_PROG_YACC
+ 
+ AM_PROG_AS
++AM_PROG_AR
+ 
+ # Checks for system services.
+ #AC_PATH_X
+@@ -118,6 +121,8 @@ sys/ucontext.h sys/uio.h sys/un.h sys/us
+ sys/wait.h sys/xattr.h tar.h termios.h tgmath.h time.h ucontext.h ulimit.h \
+ unistd.h utime.h utmp.h utmpx.h wchar.h wctype.h wordexp.h
+ ])
++# extra headers
++AC_CHECK_HEADERS([sys/cdefs.h])
+ 
+ # Checks for typedefs, structures, and compiler characteristics.
+ AC_TYPE_GETGROUPS
+@@ -217,6 +222,16 @@ AC_FUNC_STRTOLD
+ AC_FUNC_UTIME_NULL
+ AC_FUNC_VPRINTF
+ 
++AC_CHECK_SIZEOF(short)
++AC_CHECK_SIZEOF(int)
++AC_CHECK_SIZEOF(long)
++AC_CHECK_SIZEOF(long long)
++AC_CHECK_SIZEOF(unsigned int)
++AC_CHECK_SIZEOF(unsigned long)
++AC_CHECK_SIZEOF(unsigned long long)
++AC_CHECK_SIZEOF(off_t)
++AC_CHECK_SIZEOF(size_t)
++
+ # Functions list scraped from musl 0.9.4 x86_64
+ AC_CHECK_FUNCS([ \
+ a64l abort abs accept access acos acosf acosh acoshf acoshl acosl addmntent \