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authorSam Ravnborg <sam@mars.ravnborg.org>2006-01-21 06:03:09 -0500
committerSam Ravnborg <sam@mars.ravnborg.org>2006-01-21 06:03:09 -0500
commit3835f82183eab8b67ddda6b32c127859a546c82d (patch)
tree25d3e5179e13548b034213c54ed0a17db448e9b2 /scripts/kconfig/lxdialog/check-lxdialog.sh
parent3ee68c4af3fd7228c1be63254b9f884614f9ebb2 (diff)
kconfig: fix /dev/null breakage
While running "make menuconfig" and "make mrproper" some people experienced that /dev/null suddenly changed permissions or suddenly became a regular file. The main reason was that /dev/null was used as output to gcc in the check-lxdialog.sh script and gcc did some strange things with the output file; in this case /dev/null when it errorred out. Following patch implements a suggestion from Bryan O'Sullivan <bos@serpentine.com> to use gcc -print-file-name=libxxx.so. Also the Makefile is adjusted to not resolve value of HOST_EXTRACFLAGS and HOST_LOADLIBES until they are actually used. This prevents us from calling gcc when running make *clean/mrproper Thanks to Eyal Lebedinsky <eyal@eyal.emu.id.au> and Jean Delvare <khali@linux-fr.org> for the first error reports. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> ---
Diffstat (limited to 'scripts/kconfig/lxdialog/check-lxdialog.sh')
-rw-r--r--scripts/kconfig/lxdialog/check-lxdialog.sh14
1 files changed, 9 insertions, 5 deletions
diff --git a/scripts/kconfig/lxdialog/check-lxdialog.sh b/scripts/kconfig/lxdialog/check-lxdialog.sh
index 448e353923f3..120d624e672c 100644
--- a/scripts/kconfig/lxdialog/check-lxdialog.sh
+++ b/scripts/kconfig/lxdialog/check-lxdialog.sh
@@ -4,17 +4,17 @@
4# What library to link 4# What library to link
5ldflags() 5ldflags()
6{ 6{
7 echo "main() {}" | $cc -lncursesw -xc - -o /dev/null 2> /dev/null 7 $cc -print-file-name=libncursesw.so | grep -q /
8 if [ $? -eq 0 ]; then 8 if [ $? -eq 0 ]; then
9 echo '-lncursesw' 9 echo '-lncursesw'
10 exit 10 exit
11 fi 11 fi
12 echo "main() {}" | $cc -lncurses -xc - -o /dev/null 2> /dev/null 12 $cc -print-file-name=libncurses.so | grep -q /
13 if [ $? -eq 0 ]; then 13 if [ $? -eq 0 ]; then
14 echo '-lncurses' 14 echo '-lncurses'
15 exit 15 exit
16 fi 16 fi
17 echo "main() {}" | $cc -lcurses -xc - -o /dev/null 2> /dev/null 17 $cc -print-file-name=libcurses.so | grep -q /
18 if [ $? -eq 0 ]; then 18 if [ $? -eq 0 ]; then
19 echo '-lcurses' 19 echo '-lcurses'
20 exit 20 exit
@@ -36,10 +36,13 @@ ccflags()
36 fi 36 fi
37} 37}
38 38
39compiler="" 39# Temp file, try to clean up after us
40tmp=.lxdialog.tmp
41trap "rm -f $tmp" 0 1 2 3 15
42
40# Check if we can link to ncurses 43# Check if we can link to ncurses
41check() { 44check() {
42 echo "main() {}" | $cc -xc - -o /dev/null 2> /dev/null 45 echo "main() {}" | $cc -xc - -o $tmp 2> /dev/null
43 if [ $? != 0 ]; then 46 if [ $? != 0 ]; then
44 echo " *** Unable to find the ncurses libraries." 1>&2 47 echo " *** Unable to find the ncurses libraries." 1>&2
45 echo " *** make menuconfig require the ncurses libraries" 1>&2 48 echo " *** make menuconfig require the ncurses libraries" 1>&2
@@ -59,6 +62,7 @@ if [ $# == 0 ]; then
59 exit 1 62 exit 1
60fi 63fi
61 64
65cc=""
62case "$1" in 66case "$1" in
63 "-check") 67 "-check")
64 shift 68 shift