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build: improve detection of kernel version and error handling

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Thanks to Arkadiusz Miskiewicz from PLD for reporting.

	make: *** kernelrelease: No such file or directory. Stop.
	Found kernel version "...0" in
	ERROR: That kernel version is not supported. Please see
	INSTALL for minimum configuration.
This commit is contained in:
Jan Engelhardt
2010-10-16 15:56:15 +02:00
parent cf9b60a57e
commit 3500a38767
1 changed files with 15 additions and 8 deletions
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23
configure.ac
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@@ -46,6 +46,7 @@ if grep -q "CentOS release 5\." /etc/redhat-release 2>/dev/null ||
# Well, just a warning. Maybe the admin updated the kernel. # Well, just a warning. Maybe the admin updated the kernel.
echo "WARNING: This distribution's shipped kernel is not supported."; echo "WARNING: This distribution's shipped kernel is not supported.";
fi; fi;
AC_MSG_CHECKING([kernel version that we will build against])
krel="$(make -sC ${kbuilddir} kernelrelease)"; krel="$(make -sC ${kbuilddir} kernelrelease)";
krel="${krel%%-*}"; krel="${krel%%-*}";
kmajor="${krel%%.*}"; kmajor="${krel%%.*}";
@@ -61,14 +62,20 @@ else
kstable=0; kstable=0;
fi; fi;
fi; fi;
echo "Found kernel version $kmajor.$kminor.$kmicro.$kstable in $kbuilddir"; if test -z "$kmajor" -o -z "$kminor" -o -z "$kmicro"; then
if test "$kmajor" -gt 2 -o "$kminor" -gt 6 -o "$kmicro" -gt 36; then echo "WARNING: Version detection did not succeed. Continue at own luck.";
echo "WARNING: You are trying a newer kernel. Results may vary. :-)"; else
elif test \( "$kmajor" -lt 2 -o "$kminor" -lt 6 -o "$kmicro" -lt 17 \) -o \ echo "$kmajor.$kminor.$kmicro.$kstable in $kbuilddir";
\( "$kmajor" -eq 2 -a "$kminor" -eq 6 -a "$kmicro" -eq 18 -a \ if test "$kmajor" -gt 2 -o "$kminor" -gt 6 -o "$kmicro" -gt 36; then
"$kstable" -lt 5 \); then echo "WARNING: You are trying a newer kernel. Results may vary. :-)";
echo "ERROR: That kernel version is not supported. Please see INSTALL for minimum configuration."; elif test \( "$kmajor" -lt 2 -o \
exit 1; \( "$kmajor" -eq 2 -a "$kminor" -lt 6 \) -o \
\( "$kmajor" -eq 2 -a "$kminor" -eq 0 -a "$kmicro" -lt 17 \) -o \
\( "$kmajor" -eq 2 -a "$kminor" -eq 6 -a "$kmicro" -eq 18 -a \
"$kstable" -lt 5 \) \); then
echo "ERROR: That kernel version is not supported. Please see INSTALL for minimum configuration.";
exit 1;
fi;
fi; fi;
AC_SUBST([regular_CFLAGS]) AC_SUBST([regular_CFLAGS])