diff -ru libbdplus-0.2.0.orig/configure.ac libbdplus-0.2.0/configure.ac
--- libbdplus-0.2.0.orig/configure.ac	2024-06-25 11:09:23.266636039 -0300
+++ libbdplus-0.2.0/configure.ac	2024-06-25 11:16:14.246607863 -0300
@@ -109,26 +109,7 @@
 ])
 
 dnl gcrypt check
-
-AC_ARG_WITH(libgcrypt-prefix,
-            AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
-                           [prefix where libgcrypt is installed (optional)]),
-     libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
-if test x$libgcrypt_config_prefix != x ; then
-   if test x${LIBGCRYPT_CONFIG+set} != xset ; then
-      LIBGCRYPT_CONFIG=$libgcrypt_config_prefix/bin/libgcrypt-config
-   fi
-fi
-
-AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
-if test x"$LIBGCRYPT_CONFIG" = xno; then
-  AC_MSG_ERROR([libgcrypt not found on system])
-else
-  LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
-  LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
-  AC_SUBST(LIBGCRYPT_CFLAGS)
-  AC_SUBST(LIBGCRYPT_LIBS)
-fi
+PKG_CHECK_MODULES([LIBGCRYPT], [libgcrypt])
 AC_FUNC_STRERROR_R
 
 dnl use re-entrant version of gcrypt_error() from gpg-error