[PATCH liburing] configure: Respect relative prefix path

[Gabriel Krisman Bertazi <krisman@suse.de>]

When the user passes a relative path, we end up splitting the
installation in multiple directories because it is relative to $CWD,
which changes when we recurse into subdirectories.

A common idiom I use is:

  ./configure --prefix=install ; make ; make install

and that currently results in part of the installation inside prefix
and part of it elsewhere:

 $ find . -type d  -name 'install'
  ./src/install
  ./install

Not biggy, but annoying.  Let's use the path where the configure command
was invoked as basedir, like other projects usually do.

Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure b/configure
index f6b590b..21a9356 100755
--- a/configure
+++ b/configure
@@ -10,7 +10,7 @@ for opt do
   case "$opt" in
   --help|-h) show_help=yes
   ;;
-  --prefix=*) prefix="$optarg"
+  --prefix=*) prefix="$(realpath -s $optarg)"
   ;;
   --includedir=*) includedir="$optarg"
   ;;
-- 
2.45.2