[PATCH] Fix portability issues in configure script

[Arthur Williams <taaparthur@disroot.org>]

The configure script failed on my setup because of the invalid printf
directive "%" and for use of the unportable "echo -e". These have been
replaced with more portable options.

Signed-off-by: Arthur Williams <taaparthur@disroot.org>
---
 configure | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 052920d..f6b590b 100755
--- a/configure
+++ b/configure
@@ -519,9 +519,9 @@ print_config "CXX" "$cxx"
 # generate io_uring_version.h
 # Reset MAKEFLAGS
 MAKEFLAGS=
-MAKE_PRINT_VARS="include Makefile.common\nprint-%: ; @echo \$(\$*)\n"
-VERSION_MAJOR=$(env echo -e "$MAKE_PRINT_VARS" | make -s --no-print-directory -f - print-VERSION_MAJOR)
-VERSION_MINOR=$(env echo -e "$MAKE_PRINT_VARS" | make -s --no-print-directory -f - print-VERSION_MINOR)
+MAKE_PRINT_VARS="include Makefile.common\nprint-%%: ; @echo \$(\$*)\n"
+VERSION_MAJOR=$(printf "$MAKE_PRINT_VARS" | make -s --no-print-directory -f - print-VERSION_MAJOR)
+VERSION_MINOR=$(printf "$MAKE_PRINT_VARS" | make -s --no-print-directory -f - print-VERSION_MINOR)
 io_uring_version_h="src/include/liburing/io_uring_version.h"
 cat > $io_uring_version_h << EOF
 /* SPDX-License-Identifier: MIT */
-- 
2.44.0