From 68dfa900a59940242d6881541164eac70449c943 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Milo=C5=A1=20Komar=C4=8Devi=C4=87?=
 <miloskomarcevic@aim.com>
Date: Tue, 17 Oct 2023 10:21:19 +0200
Subject: [PATCH] CMake: detect C++ library for pkgconf file

---
 CMakeLists.txt | 8 ++++++++
 libheif.pc.in  | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a61145b324..c6a96ce9c9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -255,6 +255,14 @@ if (LIBSHARPYUV_FOUND)
 endif()
 list(JOIN REQUIRES_PRIVATE " " REQUIRES_PRIVATE)
 
+include(CheckCXXSymbolExists)
+check_cxx_symbol_exists(_LIBCPP_VERSION cstdlib HAVE_LIBCPP)
+if(HAVE_LIBCPP)
+  set(LIBS_PRIVATE "-lc++")
+else()
+  set(LIBS_PRIVATE "-lstdc++")
+endif()
+
 configure_file(libheif.pc.in ${CMAKE_CURRENT_BINARY_DIR}/libheif.pc @ONLY)
 
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libheif.pc
diff --git a/libheif.pc.in b/libheif.pc.in
index 710aed0c6d..24bef6d67f 100644
--- a/libheif.pc.in
+++ b/libheif.pc.in
@@ -19,5 +19,5 @@ Version: @PROJECT_VERSION@
 Requires:
 Requires.private: @REQUIRES_PRIVATE@
 Libs: -L${libdir} -lheif
-Libs.private: @LIBS@
+Libs.private: @LIBS_PRIVATE@
 Cflags: -I${includedir}