Use pkgconfig() to locate build requirements

Make factory-auto checker happy.

SDL2_ttf.changes

@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Jul 14 14:45:50 UTC 2025 - Jan Engelhardt <jengelh@inai.de>
+
+- Use pkgconfig() to locate build requirements
+
 -------------------------------------------------------------------
 Tue Jul  8 12:08:48 UTC 2025 - Lubos Kocman <lubos.kocman@suse.com>
 

SDL2_ttf.spec

@@ -28,14 +28,13 @@ URL:            https://github.com/libsdl-org/SDL_ttf
 #Git-Clone:	https://github.com/libsdl-org/SDL_ttf
 Source:         https://github.com/libsdl-org/SDL_ttf/releases/download/release-%version/SDL2_ttf-%version.tar.gz
 Source2:        https://github.com/libsdl-org/SDL_ttf/releases/download/release-%version/SDL2_ttf-%version.tar.gz.sig
-# Reference baselibs.conf as Source to make factory-auto happy
 Source3:        baselibs.conf
 Source8:        %name.keyring
-BuildRequires:  SDL2-devel >= 2.24
 BuildRequires:  c++_compiler
 BuildRequires:  dos2unix
 BuildRequires:  pkg-config
 BuildRequires:  pkgconfig(freetype2)
+BuildRequires:  pkgconfig(sdl2) >= 2.24
 
 %description
 This is a sample library that allows you to use TrueType fonts in your