add initial build for arc4random/getentropy fallbacks

1 files changed, 18 insertions, 3 deletions

diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index 1a058c4..5455a27 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -567,8 +567,6 @@ endif()
 
 if(CMAKE_HOST_WIN32)
         set(CRYPTO_SRC ${CRYPTO_SRC} compat/posix_win.c)
-        set(CRYPTO_SRC ${CRYPTO_SRC} compat/arc4random.c)
-        set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_win.c)
 endif()
 
 if(NOT HAVE_ASPRINTF)
@@ -610,7 +608,24 @@ if(NOT HAVE_EXPLICIT_BZERO)
         endif()
 endif()
 
-if(NOT HAVE_GETENTROPY)
+if(NOT HAVE_ARC4RANDOM_BUF)
+        set(CRYPTO_SRC ${CRYPTO_SRC} compat/arc4random.c)
+
+        if(NOT HAVE_GETENTROPY)
+                if(CMAKE_HOST_WIN32)
+                        set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_win.c)
+                elseif(CMAKE_SYSTEM_NAME MATCHES "AIX")
+                        set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_aix.c)
+                elseif(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+                        set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_freebsd.c)
+                elseif(CMAKE_SYSTEM_NAME MATCHES "NetBSD")
+                        set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_netbsd.c)
+                elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+                        set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_darwin.c)
+                elseif(CMAKE_SYSTEM_NAME MATCHES "SunOS")
+                        set(CRYPTO_SRC ${CRYPTO_SRC} compat/getentropy_solaris.c)
+                endif()
+        endif()
 endif()
 
 if(NOT HAVE_TIMINGSAFE_BCMP)