kconfig/lxdialog/check-lxdialog.sh
author Anthony Foiani <anthony.foiani@gmail.com>
Thu May 19 23:06:16 2011 +0200 (2011-05-19)
branch1.11
changeset 2464 4b844234d214
parent 1973 20f02d426e15
child 2448 a103abae1560
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>
(transplanted from ec30b191f0e3fe9bc73199f0bcb8d789db17aa92)
     1 #!/bin/sh
     2 # Check ncurses compatibility
     3 
     4 # What library to link
     5 ldflags()
     6 {
     7 	for ext in so a dylib ; do
     8 		for lib in ncursesw ncurses curses ; do
     9 			$cc -print-file-name=lib${lib}.${ext} | grep -q /
    10 			if [ $? -eq 0 ]; then
    11 				echo "-l${lib}"
    12 				exit
    13 			fi
    14 		done
    15 	done
    16 	exit 1
    17 }
    18 
    19 # Where is ncurses.h?
    20 ccflags()
    21 {
    22 	if [ -f /usr/include/ncurses/ncurses.h ]; then
    23 		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"'
    24 	elif [ -f /usr/include/ncurses/curses.h ]; then
    25 		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"'
    26 	elif [ -f /usr/include/ncurses.h ]; then
    27 		echo '-DCURSES_LOC="<ncurses.h>"'
    28 	else
    29 		echo '-DCURSES_LOC="<curses.h>"'
    30 	fi
    31 }
    32 
    33 # Temp file, try to clean up after us
    34 tmp=.lxdialog.tmp
    35 trap "rm -f $tmp" 0 1 2 3 15
    36 
    37 # Check if we can link to ncurses
    38 check() {
    39         $cc -xc - -o $tmp 2>/dev/null <<'EOF'
    40 #include CURSES_LOC
    41 main() {}
    42 EOF
    43 	if [ $? != 0 ]; then
    44 	    echo " *** Unable to find the ncurses libraries or the"       1>&2
    45 	    echo " *** required header files."                            1>&2
    46 	    echo " *** 'make menuconfig' requires the ncurses libraries." 1>&2
    47 	    echo " *** "                                                  1>&2
    48 	    echo " *** Install ncurses (ncurses-devel) and try again."    1>&2
    49 	    echo " *** "                                                  1>&2
    50 	    exit 1
    51 	fi
    52 }
    53 
    54 usage() {
    55 	printf "Usage: $0 [-check compiler options|-ccflags|-ldflags compiler options]\n"
    56 }
    57 
    58 if [ $# -eq 0 ]; then
    59 	usage
    60 	exit 1
    61 fi
    62 
    63 cc=""
    64 case "$1" in
    65 	"-check")
    66 		shift
    67 		cc="$@"
    68 		check
    69 		;;
    70 	"-ccflags")
    71 		ccflags
    72 		;;
    73 	"-ldflags")
    74 		shift
    75 		cc="$@"
    76 		ldflags
    77 		;;
    78 	"*")
    79 		usage
    80 		exit 1
    81 		;;
    82 esac