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libxl: fallback to lib probe if pkgconfig file not found

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With the assumption that all Xen >= 4.6 contains a pkgconfig file for
libxenlight, commit 5bdcef13 dropped the fallback check to probe
libxenlight with LIBVIRT_CHECK_LIB. At the time it was not known that
the various Xen pkgconfig files are in the -runtime package in Fedora,
instead of the traditional -devel package. This bug [1] was fixed in
Fedora > 28, but until Fedora 28 reaches EOL we'll need to re-introduce
the fallback check.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1629643

Signed-off-by: Jim Fehlig <jfehlig@suse.com>
This commit is contained in:
Jim Fehlig 2018-09-19 10:16:23 -06:00
parent e44840c441
commit dc3d2c9f8c
1 changed files with 21 additions and 1 deletions
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22
m4/virt-driver-libxl.m4
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@ -29,11 +29,31 @@ AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [
LIBXL_API_VERSION="-DLIBXL_API_VERSION=0x040500"
dnl search for libxl, aka libxenlight
LIBVIRT_CHECK_PKG([LIBXL], [xenlight], [4.6.0])
old_with_libxl="$with_libxl"
LIBVIRT_CHECK_PKG([LIBXL], [xenlight], [4.6.0], [true])
if test "x$with_libxl" = "xyes" ; then
LIBXL_FIRMWARE_DIR=$($PKG_CONFIG --variable xenfirmwaredir xenlight)
LIBXL_EXECBIN_DIR=$($PKG_CONFIG --variable libexec_bin xenlight)
fi
dnl In Fedora <= 28, the xenlight pkgconfig file is in the -runtime package
dnl https://bugzilla.redhat.com/show_bug.cgi?id=1629643
dnl Until Fedora 28 reaches EOL, fallback to lib probe if xenlight.pc is
dnl not found
if test "x$with_libxl" = "xno" ; then
with_libxl="$old_with_libxl"
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $LIBXL_API_VERSION"
LIBVIRT_CHECK_LIB([LIBXL], [xenlight], [libxl_cpupool_cpuadd_cpumap], [libxl.h], [fail="1"])
CFLAGS="$save_CFLAGS"
if test $fail = 1; then
AC_MSG_ERROR([You must install the libxl Library from Xen >= 4.6 to compile libxenlight driver with -lxl])
fi
fi
if test "$with_libxl" = "yes"; then
LIBXL_CFLAGS="$LIBXL_CFLAGS $LIBXL_API_VERSION"
dnl If building with libxl, use the libxl utility header and lib too