update finders for linux

Tools/CMake/finders/FindFLAC.cmake

@@ -0,0 +1,13 @@
+if(TARGET FLAC)
+  set(FLAC_FOUND TRUE)
+  set(FLAC_INCLUDE_DIRS $<TARGET_PROPERTY:FLAC,INTERFACE_INCLUDE_DIRECTORIES>)
+  set(FLAC_LIBRARIES FLAC)
+
+  # Provide an alias for consistency with modern CMake
+  if(NOT TARGET FLAC::FLAC)
+    add_library(FLAC::FLAC ALIAS FLAC)
+  endif()
+else()
+  set(FLAC_FOUND FALSE)
+  message(FATAL_ERROR "Flac was not added with add_subdirectory before calling find_package(FLAC).")
+endif()

Tools/CMake/finders/FindOGG.cmake

@@ -0,0 +1,13 @@
+if(TARGET ogg)
+  set(OGG_FOUND TRUE)
+  set(OGG_INCLUDE_DIRS $<TARGET_PROPERTY:ogg,INTERFACE_INCLUDE_DIRECTORIES>)
+  set(OGG_LIBRARIES ogg)
+
+  # Provide an alias for consistency with modern CMake
+  if(NOT TARGET OGG::OGG)
+    add_library(OGG::OGG ALIAS ogg)
+  endif()
+else()
+  set(OGG_FOUND FALSE)
+  message(FATAL_ERROR "Ogg was not added with add_subdirectory before calling find_package(Ogg).")
+endif()

Tools/CMake/finders/FindOPUS.cmake

@@ -0,0 +1,13 @@
+if(TARGET opus)
+  set(OPUS_FOUND TRUE)
+  set(OPUS_INCLUDE_DIRS $<TARGET_PROPERTY:opus,INTERFACE_INCLUDE_DIRECTORIES>)
+  set(OPUS_LIBRARIES opus)
+
+  # Provide an alias for consistency with modern CMake
+  if(NOT TARGET OPUS::OPUS)
+    add_library(OPUS::OPUS ALIAS opus)
+  endif()
+else()
+  set(OPUS_FOUND FALSE)
+  message(FATAL_ERROR "Opus was not added with add_subdirectory before calling find_package(Opus).")
+endif()

Tools/CMake/finders/FindPCRE.cmake

@@ -0,0 +1,13 @@
+if(TARGET pcre)
+  set(PCRE_FOUND TRUE)
+  set(PCRE_INCLUDE_DIRS $<TARGET_PROPERTY:pcre,INTERFACE_INCLUDE_DIRECTORIES>)
+  set(PCRE_LIBRARIES pcre)
+
+  # Provide an alias for consistency with modern CMake
+  if(NOT TARGET PCRE::PCRE)
+    add_library(PCRE::PCRE ALIAS pcre)
+  endif()
+else()
+  set(PCRE_FOUND FALSE)
+  message(FATAL_ERROR "PCRE was not added with add_subdirectory before calling find_package(PCRE).")
+endif()

Tools/CMake/finders/FindSDL2.cmake

@@ -0,0 +1,14 @@
+# Ensure SDL2 has been added before using this module
+if(TARGET SDL2)
+  set(SDL2_FOUND TRUE)
+  set(SDL2_INCLUDE_DIRS $<TARGET_PROPERTY:SDL2,INTERFACE_INCLUDE_DIRECTORIES>)
+  set(SDL2_LIBRARIES SDL2)
+  message(STATUS "Using Torques build of SDL2.")
+  # Provide an alias for consistency with modern CMake
+  if(NOT TARGET SDL2::SDL2)
+    add_library(SDL2::SDL2 ALIAS SDL2)
+  endif()
+else()
+  set(SDL2_FOUND FALSE)
+  message(FATAL_ERROR "SDL2 was not added with add_subdirectory before calling find_package(SDL2).")
+endif()

Tools/CMake/finders/FindVorbis.cmake

@@ -0,0 +1,13 @@
+if(TARGET vorbis)
+  set(VORBIS_FOUND TRUE)
+  set(VORBIS_INCLUDE_DIRS $<TARGET_PROPERTY:vorbis,INTERFACE_INCLUDE_DIRECTORIES>)
+  set(VORBIS_LIBRARIES vorbis)
+
+  # Provide an alias for consistency with modern CMake
+  if(NOT TARGET VORBIS::VORBIS)
+    add_library(VORBIS::VORBIS ALIAS vorbis)
+  endif()
+else()
+  set(VORBIS_FOUND FALSE)
+  message(FATAL_ERROR "Vorbis was not added with add_subdirectory before calling find_package(Vorbis).")
+endif()

Tools/CMake/finders/FindZlib.cmake

@@ -0,0 +1,14 @@
+# Ensure zlib has been added before using this module
+if(TARGET zlib)
+  set(ZLIB_FOUND TRUE)
+  set(ZLIB_INCLUDE_DIRS $<TARGET_PROPERTY:zlib,INTERFACE_INCLUDE_DIRECTORIES>)
+  set(ZLIB_LIBRARIES zlib)
+  message(STATUS "Using Torques build of zlib.")
+  # Provide an alias for consistency with modern CMake
+  if(NOT TARGET ZLIB::ZLIB)
+    add_library(ZLIB::ZLIB ALIAS zlib)
+  endif()
+else()
+  set(ZLIB_FOUND FALSE)
+  message(FATAL_ERROR "Zlib was not added with add_subdirectory before calling find_package(ZLIB).")
+endif()