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scripts/scripts.mk
author Bryan Hundven <bryanhundven@gmail.com>
Sun Jun 26 03:26:54 2011 -0700 (2011-06-26)
changeset 2515 364b06df9e3a
parent 1618 7f52e1cca71e
permissions -rw-r--r--
glibc: Refactor startfiles/headers into do_libc_backend()

Refactor the contents of 'do_libc_start_files()' and 'do_libc()' into a
parameterized 'do_libc_backend()'. 'do_libc_start_files()' and 'do_libc()'
call 'do_libc_backend()' with either 'libc_mode=startfiles' or
'libc_mode=final' (respectively) so that the startfiles/headers and
the final libc builds are configured and built with the same options.

One example of where this is needed is when building a mips toolchain.
Previously, if you were building an n32 toolchain, you wouldn't have
noticed an issue, because if '-mabi' is not in CFLAGS, n32 is the
default:

http://sourceware.org/git/?p=glibc-ports.git;a=blob;f=sysdeps/mips/preconfigure;hb=HEAD

But when trying to build an o32 or n64 toolchain the build would
have failed. This is because (e)glibc expects "-mabi={o32,n32,n64}" to be
in CFLAGS, but was not previously provided in 'do_libc_start_files()'.
The build failure would happen in the shared-core gcc when it tries to
configure an n64 or o32 gcc with an n32 libc.

A simpler solution would have been to just add TARGET_CFLAGS to configure
in 'do_libc_start_files()', but this way makes configure and make
consistent for both steps.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> 
     1 # Makefile for the scripts/ sub-directory

     2 

     3 # Here, we can update the config.* scripts.

     4 # If we're in CT_LIB_DIR, then CT_LIB_DIR == CT_TOP_DIR, and we can update those

     5 # scripts for later inclusion mainline. If CT_LIB_DIR != CT_TOP_DIR, then those

     6 # scripts are downloaded only for use in CT_TOP_DIR.

     7 

     8 # ----------------------------------------------------------

     9 # The tools help entry

    10 

    11 help-distrib::

    12 	@echo  '  updatetools        - Update the config tools'

    13 

    14 # ----------------------------------------------------------

    15 # Where to get tools from, and where to store them into

    16 # The tools are: config.guess and config.sub

    17 

    18 CONFIG_SUB_SRC="http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD"

    19 CONFIG_SUB_DEST=scripts/config.sub

    20 CONFIG_GUESS_SRC="http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD"

    21 CONFIG_GUESS_DEST=scripts/config.guess

    22 

    23 PHONY += updatetools

    24 updatetools: $(CONFIG_SUB_DEST) $(CONFIG_GUESS_DEST)

    25 

    26 # ----------------------------------------------------------

    27 # How to retrieve the tools

    28 

    29 wget_opt=-o /dev/null

    30 ifeq ($(strip $(V)),2)

    31   wget_opt=

    32 endif

    33 

    34 PHONY += scripts

    35 scripts:

    36 	@$(ECHO) '  MKDIR $@'

    37 	$(SILENT)mkdir -p $@

    38 

    39 $(CONFIG_SUB_DEST): scripts FORCE

    40 	@$(ECHO) '  WGET  $@'

    41 	$(SILENT)wget $(wget_opt) -O $@ $(CONFIG_SUB_SRC)

    42 	$(SILENT)chmod u+rwx,go+rx-w $@

    43 

    44 $(CONFIG_GUESS_DEST): scripts FORCE

    45 	@$(ECHO) '  WGET  $@'

    46 	$(SILENT)wget $(wget_opt) -O $@ $(CONFIG_GUESS_SRC)

    47 	$(SILENT)chmod u+rwx,go+rx-w $@

    48 

    49 # ----------------------------------------------------------

    50 # Clean up the mess

    51 

    52 distclean::

    53 	@$(ECHO) "  CLEAN scripts"

    54 	$(SILENT)[ $(CT_TOP_DIR) = $(CT_LIB_DIR) ] || rm -rf $(CT_TOP_DIR)/scripts
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