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comparison scripts/genconfig.sh @ 1260:0ce03bb85ebd draft

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Probe for the existence of FIFREEZE and make fsfreeze depend on it.
author Rob Landley <rob@landley.net>
date Wed, 16 Apr 2014 07:49:32 -0500
parents 565980862743
children a302299dbb98
comparison
equal deleted inserted replaced
1259:565980862743 1260:0ce03bb85ebd
5 5
6 mkdir -p generated 6 mkdir -p generated
7 7
8 source configure 8 source configure
9 9
10 # Probe for a single config symbol with a "compiles or not" test.
11 # Symbol name is first argument, flags second, feed C file to stdin
12 probesymbol()
13 {
14 ${CROSS_COMPILE}${CC} $CFLAGS -xc -o /dev/null $2 - 2>/dev/null
15 [ $? -eq 0 ] && DEFAULT=y || DEFAULT=n
16 rm a.out 2>/dev/null
17 echo -e "config $1\n\tbool" || exit 1
18 echo -e "\tdefault $DEFAULT\n" || exit 1
19 }
20
10 probeconfig() 21 probeconfig()
11 { 22 {
12 # Probe for container support on target 23 # Probe for container support on target
13 24 probesymbol TOYBOX_CONTAINER << EOF
14 echo -e "# container support\nconfig TOYBOX_CONTAINER\n\tbool" || return 1
15 ${CROSS_COMPILE}${CC} $CFLAGS -xc -o /dev/null - 2>/dev/null << EOF
16 #include <linux/sched.h> 25 #include <linux/sched.h>
17 int x=CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET; 26 int x=CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET;
18 27
19 int main(int argc, char *argv[]) { return unshare(x); } 28 int main(int argc, char *argv[]) { return unshare(x); }
20 EOF 29 EOF
21 [ $? -eq 0 ] && DEFAULT=y || DEFAULT=n 30
22 rm a.out 2>/dev/null 31 probesymbol TOYBOX_FIFREEZE -c << EOF
23 echo -e "\tdefault $DEFAULT\n" || return 1 32 #include <linux/fs.h>
33 #ifndef FIFREEZE
34 #error nope
35 #endif
36 EOF
24 } 37 }
25 38
26 genconfig() 39 genconfig()
27 { 40 {
28 # I could query the directory here, but I want to control the order 41 # I could query the directory here, but I want to control the order