SDL_mixer: cmake: don't buid SDL_mixer as a shared library on platforms that don't support it

SDL Commits
1 
From 29e2f1d9d0322713dc13b77d581fa2beac65386e Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Fri, 12 Jan 2024 16:01:39 +0100
Subject: [PATCH] cmake: don't buid SDL_mixer  as a shared library on 
 platforms that don't support it

---
 CMakeLists.txt | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 16d68058..c48446b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -75,11 +75,15 @@ include(CheckSymbolExists)
 include(CMakeDependentOption)
 include(CMakePackageConfigHelpers)
 include(GNUInstallDirs)
-
 include(PkgConfigHelper)
 
+set(BUILD_SHARED_LIBS_DEFAULT ON)
+if(VITA OR PSP OR PS2 OR N3DS OR RISCOS)
+  set(BUILD_SHARED_LIBS_DEFAULT OFF)
+endif()
+
 option(CMAKE_POSITION_INDEPENDENT_CODE "Build static libraries with -fPIC" ON)
-option(BUILD_SHARED_LIBS "Build the library as a shared library" ON)
+option(BUILD_SHARED_LIBS "Build the library as a shared library" ${BUILD_SHARED_LIBS_DEFAULT})
 
 cmake_dependent_option(SDL3MIXER_INSTALL "Enable SDL3mixer install target" ${SDL3MIXER_ROOTPROJECT} "${sdl3mixer_install_enableable}" OFF)
 cmake_dependent_option(SDL3MIXER_INSTALL_MAN "Install man pages for SDL3_mixer" ${SDL3MIXER_ROOTPROJECT} "SDL3MIXER_INSTALL" OFF)