From 6cd2b6cded1d7281df7584d7fad9ccb1d1022243 Mon Sep 17 00:00:00 2001
From: Vitaliy Kirsanov <krokoziabla@yandex-team.ru>
Date: Sun, 7 Apr 2019 12:37:56 +0300
Subject: [PATCH] FindOGG.cmake module added

---
 CMakeLists.txt             | 13 ++++++++++++-
 cmake/FindOGG.cmake        | 34 ++++++++++++++++++++++++++++++++++
 flac-config.cmake.in       |  6 ++++++
 src/CMakeLists.txt         |  5 -----
 src/libFLAC/CMakeLists.txt | 10 +++++++++-
 5 files changed, 61 insertions(+), 7 deletions(-)
 create mode 100644 cmake/FindOGG.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a4870fe5..e1166db5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,10 +6,14 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
 option(BUILD_CXXLIBS "Build libFLAC++" ON)
 option(BUILD_EXAMPLES "Build and install examples" ON)
+option(WITH_OGG "ogg support (default: test for libogg)" ON)
+
+if(WITH_OGG)
+    find_package(OGG REQUIRED)
+endif()
 
 if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Waggregate-return -Wcast-align -Wnested-externs -Wshadow -Wundef -Wmissing-declarations -Winline")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wcast-align -Wshadow -Wwrite-strings -Wctor-dtor-privacy -Wnon-virtual-dtor -Wreorder -Wsign-promo -Wundef")
 
     if(CMAKE_BULD_TYPE STREQUAL Release)
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3 -funroll-loops")
@@ -17,6 +21,12 @@ if(CMAKE_C_COMPILER_ID MATCHES "GNU|Clang")
 
     option(ENABLE_SSP "Enable GNU GCC stack smash protection" OFF)
 endif()
+if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wcast-align -Wshadow -Wwrite-strings -Wctor-dtor-privacy -Wnon-virtual-dtor -Wreorder -Wsign-promo -Wundef")
+endif()
+if(CMAKE_C_COMPILER_ID MATCHES "GNU")
+    set(CMAKE_EXE_LINKER_FLAGS -no-pie)
+endif()
 
 include(CMakePackageConfigHelpers)
 include(CPack)
@@ -114,6 +124,7 @@ install(
     FILES
         "${CMAKE_CURRENT_BINARY_DIR}/flac-config.cmake"
         "${CMAKE_CURRENT_BINARY_DIR}/flac-config-version.cmake"
+        "cmake/FindOGG.cmake"
     DESTINATION "${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/cmake")
 
 file(GLOB FLAC_HEADERS "include/FLAC/*.h")
diff --git a/cmake/FindOGG.cmake b/cmake/FindOGG.cmake
new file mode 100644
index 00000000..a7b2840f
--- /dev/null
+++ b/cmake/FindOGG.cmake
@@ -0,0 +1,34 @@
+find_package(PkgConfig)
+pkg_check_modules(_OGG QUIET ogg)
+
+find_path(_OGG_INCLUDE_DIR
+    NAMES "ogg/ogg.h"
+    PATHS ${_OGG_INCLUDE_DIRS})
+
+find_library(_OGG_LIBRARY
+    NAMES ogg libogg
+    HINTS ${_OGG_LIBRARY_DIRS})
+
+find_library(_OGG_LIBRARY_STATIC
+    NAMES libogg.a libogg_static
+    HINTS ${_OGG_LIBRARY_DIRS})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(OGG
+    REQUIRED_VARS _OGG_INCLUDE_DIR _OGG_LIBRARY
+    VERSION_VAR _OGG_VERSION)
+
+if(OGG_FOUND)
+    if(NOT Ogg::Ogg)
+        add_library(Ogg::Ogg UNKNOWN IMPORTED)
+        set_target_properties(Ogg::Ogg PROPERTIES
+            INTERFACE_INCLUDE_DIRECTORIES "${_OGG_INCLUDE_DIR}"
+            IMPORTED_LOCATION "${_OGG_LIBRARY}")
+    endif()
+    if(NOT Ogg::Ogg-static AND _OGG_LIBRARY_STATIC)
+        add_library(Ogg::Ogg-static STATIC IMPORTED)
+        set_target_properties(Ogg::Ogg-static PROPERTIES
+            INTERFACE_INCLUDE_DIRECTORIES "${_OGG_INCLUDE_DIR}"
+            IMPORTED_LOCATION "${_OGG_LIBRARY_STATIC}")
+    endif()
+endif()
diff --git a/flac-config.cmake.in b/flac-config.cmake.in
index 89c6e7d0..154d0b86 100644
--- a/flac-config.cmake.in
+++ b/flac-config.cmake.in
@@ -1,3 +1,9 @@
 @PACKAGE_INIT@
 
+if(@OGG_FOUND@)
+    list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
+    include(CMakeFindDependencyMacro)
+    find_dependency(OGG)
+endif()
+
 include("${CMAKE_CURRENT_LIST_DIR}/targets.cmake")
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 7de7a7fa..f6577467 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,13 +1,8 @@
 cmake_minimum_required(VERSION 3.12)
 
 option(ENABLE_64_BIT_WORDS "Set FLAC__BYTES_PER_WORD to 8 (4 is the default)" OFF)
-option(WITH_OGG "ogg support (default: test for libogg)" ON)
 option(WITH_XMMS "Build XMMS plugin" OFF)
 
-if(WITH_OGG)
-    find_package(OGG REQUIRED)
-endif()
-
 check_include_file("iconv.h" HAVE_ICONV_H)
 
 add_compile_definitions(
diff --git a/src/libFLAC/CMakeLists.txt b/src/libFLAC/CMakeLists.txt
index 1ea9383a..13f14751 100644
--- a/src/libFLAC/CMakeLists.txt
+++ b/src/libFLAC/CMakeLists.txt
@@ -102,9 +102,16 @@ target_include_directories(FLAC-static INTERFACE
     "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
     "$<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include>")
 target_link_libraries(FLAC-static PUBLIC
-    $<TARGET_NAME_IF_EXISTS:Ogg::Ogg>
+    $<TARGET_NAME_IF_EXISTS:Ogg::Ogg-static>
     $<TARGET_NAME_IF_EXISTS:FLAC-asm>
     $<$<BOOL:${HAVE_LROUND}>:m>)
+if(TARGET Ogg::Ogg-static)
+    target_link_libraries(FLAC-static PUBLIC
+        $<TARGET_NAME_IF_EXISTS:Ogg::Ogg-static>)
+elseif(TARGET Ogg::Ogg)
+    target_link_libraries(FLAC-static PUBLIC
+        $<TARGET_NAME_IF_EXISTS:Ogg::Ogg>)
+endif()
 
 add_library(FLAC SHARED ${SOURCES})
 target_compile_definitions(FLAC PRIVATE FLAC_API_EXPORTS FLAC__USE_VISIBILITY_ATTR)
@@ -112,6 +119,7 @@ target_include_directories(FLAC INTERFACE
     "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
     "$<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include>")
 target_link_libraries(FLAC PRIVATE
+    $<TARGET_NAME_IF_EXISTS:Ogg::Ogg>
     $<TARGET_NAME_IF_EXISTS:FLAC-asm>
     $<$<BOOL:${HAVE_LROUND}>:m>)
 set_target_properties(FLAC PROPERTIES C_VISIBILITY_PRESET hidden)
-- 
2.11.4.GIT