crosstool-ng: patches/duma/2_5_15/100-cross-compile.patch@ff2181adbd28

cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

     1 diff -durN duma_2_5_15.orig/GNUmakefile duma_2_5_15/GNUmakefile

     2 --- duma_2_5_15.orig/GNUmakefile	2008-08-03 21:22:38.000000000 +0200

     3 +++ duma_2_5_15/GNUmakefile	2009-06-19 15:32:23.000000000 +0200

     4 @@ -93,10 +93,6 @@

     5  # also define 'WIN32'

     7  # some defaults:

     8 -CC=gcc

     9 -CXX=g++

    10 -AR=ar

    11 -RANLIB=ranlib

    12  INSTALL=install

    13  RM=rm

    14  RMFORCE=rm -f

    15 @@ -471,7 +467,7 @@

    17  createconf$(EXEPOSTFIX): createconf.o

    18  	- $(RMFORCE) createconf$(EXEPOSTFIX)

    19 -	$(CC) $(CFLAGS) $(DUMA_OPTIONS) createconf.o -o createconf$(EXEPOSTFIX)

    20 +	$(HOSTCC) $(HOSTCFLAGS) $(DUMA_OPTIONS) createconf.o -o createconf$(EXEPOSTFIX)

    22  tstheap$(EXEPOSTFIX): libduma.a tstheap.o

    23  	- $(RMFORCE) tstheap$(EXEPOSTFIX)

    24 @@ -532,7 +528,7 @@

    25  # define rules how to build objects for createconf

    26  #

    27  createconf.o:

    28 -	$(CC) $(CFLAGS) $(DUMA_OPTIONS) -c createconf.c -o $@

    29 +	$(HOSTCC) $(HOSTCFLAGS) $(DUMA_OPTIONS) -c createconf.c -o $@

    32  #

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123	ff2181adbd28
parent 572	944e145f3890
permissions	-rw-r--r--