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Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling

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Make FIND_SYSTEM_LIBRARY respect a configured sysroot, otherwise it
might find headers from the build machine and assume the library is
available on the host/target.

Tighten up error checking: if pkg-config or the user specified _CFLAGS
or _LIBS but we can't find the header/library, issue a fatal error.

Fix the -L flag to /usr/local/lib instead of just /usr/local.

Clean out the _CFLAGS and _LIBS if we located something that we later
find doesn't work.

Rename FIND_SYSTEM_LIBRARY into the ZFS_AC_ scope.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Closes #10538
This commit is contained in:
Arvind Sankar
2020-07-09 16:31:41 -04:00
committed by Brian Behlendorf
parent 3e597dee11
commit f040a7b0f8
8 changed files with 83 additions and 69 deletions
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config/user-libblkid.m4
+1 -1
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@@ -3,7 +3,7 @@ dnl # Check for libblkid. Basic support for detecting ZFS pools
dnl # has existing in blkid since 2008.
dnl #
AC_DEFUN([ZFS_AC_CONFIG_USER_LIBBLKID], [
FIND_SYSTEM_LIBRARY(LIBBLKID, [blkid], [blkid/blkid.h], [], [blkid], [], [], [
ZFS_AC_FIND_SYSTEM_LIBRARY(LIBBLKID, [blkid], [blkid/blkid.h], [], [blkid], [], [], [
AC_MSG_FAILURE([
*** blkid.h missing, libblkid-devel package required])])
])