patches/gcc/4.4.0/130-cross-compile.patch
author Anthony Foiani <anthony.foiani@gmail.com>
Thu May 19 23:06:16 2011 +0200 (2011-05-19)
changeset 2461 ec30b191f0e3
permissions -rw-r--r--
complibs/ppl: build only C and C++ interfaces for PPL

By default, PPL wants to build interfaces for any of a variety of
langauges it finds on the local host (python, java, possibly perl, also
more esoteric languages such as ocaml and prolog).

These extra interfaces can double the compile time for the library. For
single-process builds, I found a savings of more than 40%:

default / j1: 716s total, 143.2s avg, 0.52s stdev
just_c / j1: 406s total, 81.2s avg, 0.33s stdev
just_c_cpp / j1: 413s total, 82.6s avg, 0.22s stdev

And for multi-process builds, it approached 50%:

default / j4: 625s total, 125.0s avg, 0.57s stdev
just_c / j4: 338s total, 67.6s avg, 1.25s stdev
just_c_cpp / j4: 327s total, 65.4s avg, 0.36s stdev

Since the PPL we build within ct-ng is only used by GCC, we only need to
build the C and C++ interfaces.

Signed-Off-By: Anthony Foiani <anthony.foiani@gmail.com>
     1 diff -durN gcc-4.4.0.orig/gcc/configure gcc-4.4.0/gcc/configure
     2 --- gcc-4.4.0.orig/gcc/configure	2009-03-24 18:46:03.000000000 +0100
     3 +++ gcc-4.4.0/gcc/configure	2009-05-27 21:38:06.000000000 +0200
     4 @@ -13997,7 +13997,7 @@
     5  	    | powerpc*-*-*,powerpc64*-*-*)
     6  		CROSS="$CROSS -DNATIVE_CROSS" ;;
     7  	esac
     8 -elif test "x$TARGET_SYSTEM_ROOT" != x; then
     9 +elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then
    10          SYSTEM_HEADER_DIR=$build_system_header_dir
    11  fi
    12  
    13 diff -durN gcc-4.4.0.orig/gcc/configure.ac gcc-4.4.0/gcc/configure.ac
    14 --- gcc-4.4.0.orig/gcc/configure.ac	2009-03-24 18:46:03.000000000 +0100
    15 +++ gcc-4.4.0/gcc/configure.ac	2009-05-27 21:38:06.000000000 +0200
    16 @@ -1720,7 +1720,7 @@
    17  	    | powerpc*-*-*,powerpc64*-*-*)
    18  		CROSS="$CROSS -DNATIVE_CROSS" ;;
    19  	esac
    20 -elif test "x$TARGET_SYSTEM_ROOT" != x; then
    21 +elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then
    22          SYSTEM_HEADER_DIR=$build_system_header_dir 
    23  fi
    24  
    25 diff -durN gcc-4.4.0.orig/gcc/unwind-dw2.c gcc-4.4.0/gcc/unwind-dw2.c
    26 --- gcc-4.4.0.orig/gcc/unwind-dw2.c	2009-04-10 01:23:07.000000000 +0200
    27 +++ gcc-4.4.0/gcc/unwind-dw2.c	2009-05-27 21:38:06.000000000 +0200
    28 @@ -329,9 +329,11 @@
    29  }
    30  #endif
    31  
    32 +#ifndef inhibit_libc
    33  #ifdef MD_UNWIND_SUPPORT
    34  #include MD_UNWIND_SUPPORT
    35  #endif
    36 +#endif
    37  
    38  /* Extract any interesting information from the CIE for the translation
    39     unit F belongs to.  Return a pointer to the byte after the augmentation,