From 6f3474db2d5047985cddc98c511f1f1070c2ef07 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <anonymous.maarten@gmail.com>
Date: Fri, 3 Jun 2022 19:58:25 +0200
Subject: [PATCH] autotools: export relative path of an installed
 sdl2-config.cmake to the prefix root

---
 configure    | 6 ++++++
 configure.ac | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/configure b/configure
index 3943176a0..9d37869e6 100755
--- a/configure
+++ b/configure
@@ -653,6 +653,7 @@ SDL_RLD_FLAGS
 SDL_STATIC_LIBS
 SDL_LIBS
 SDL_CFLAGS
+cmake_prefix_relpath
 INSTALL_SDL2_CONFIG
 LIBUSB_LIBS
 LIBUSB_CFLAGS
@@ -27052,6 +27053,11 @@ fi
 
 SDL_STATIC_LIBS="$EXTRA_LDFLAGS"
 
+eval pkg_prefix=$prefix
+eval pkg_cmakedir=$libdir/cmake/SDL2
+cmake_prefix_relpath="$(echo -n "$pkg_cmakedir" | sed -E "s#^$pkg_prefix##" | sed -E "s#[A-Za-z0-9_ .-]+#..#g" )"
+
+
 
 
 
diff --git a/configure.ac b/configure.ac
index 87cdcf327..b81286efe 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4688,6 +4688,12 @@ fi
 
 SDL_STATIC_LIBS="$EXTRA_LDFLAGS"
 
+dnl Calculate the location of the prefix, relative to the cmake folder
+eval pkg_prefix=$prefix
+eval pkg_cmakedir=$libdir/cmake/SDL2
+cmake_prefix_relpath="$(echo -n "$pkg_cmakedir" | sed -E "s#^$pkg_prefix##" | sed -E "s#[A-Za-z0-9_ .-]+#..#g" )"
+AC_SUBST([cmake_prefix_relpath])
+
 dnl Expand the cflags and libraries needed by apps using SDL
 AC_SUBST(SDL_CFLAGS)
 AC_SUBST(SDL_LIBS)