X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=CMakeLists.txt;h=3326b54e5cc24a2c10069f5c146d958dca00938b;hb=06e8dc9edde8aacea66b32c14a8f8fb6e3cdbbbf;hp=73bed2c68de8ade497a48d6b06621ef6cbd1e26e;hpb=0cfe2ca4a9687c1b1bbb6c9c9b193ae71a79d547;p=openjpeg.git

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73bed2c6..3326b54e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -225,6 +225,18 @@ CHECK_INCLUDE_FILE("unistd.h"       HAVE_UNISTD_H)
 include(TestLargeFiles)
 OPJ_TEST_LARGE_FILES(OPJ_HAVE_LARGEFILES)
 
+# Allocating Aligned Memory Blocks
+include(CheckIncludeFiles)
+check_include_files(malloc.h OPJ_HAVE_MALLOC_H)
+include(CheckSymbolExists)
+# _aligned_alloc https://msdn.microsoft.com/en-us/library/8z34s9c6.aspx
+check_symbol_exists(_aligned_malloc malloc.h OPJ_HAVE__ALIGNED_MALLOC)
+# posix_memalign (needs _POSIX_C_SOURCE >= 200112L on Linux)
+set(CMAKE_REQUIRED_DEFINITIONS -D_POSIX_C_SOURCE=200112L)
+check_symbol_exists(posix_memalign stdlib.h OPJ_HAVE_POSIX_MEMALIGN)
+unset(CMAKE_REQUIRED_DEFINITIONS)
+# memalign (obsolete)
+check_symbol_exists(memalign malloc.h OPJ_HAVE_MEMALIGN)
 #-----------------------------------------------------------------------------
 # Build Library
 if(BUILD_JPIP_SERVER)