diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index cfcba62..a6842f5 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -996,7 +996,8 @@ target_include_directories(crypto_obj
 		x509
 		../include/compat
 	PUBLIC
-		../include)
+		../include
+		${CMAKE_BINARY_DIR}/include)
 
 if(HOST_AARCH64)
 	target_include_directories(crypto_obj PRIVATE bn/arch/aarch64/)
diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
index 76f65b6..9c37aa7 100644
--- a/include/CMakeLists.txt
+++ b/include/CMakeLists.txt
@@ -19,4 +19,4 @@ elseif(HOST_SPARC64)
 elseif(HOST_X86_64)
 	file(READ arch/amd64/opensslconf.h OPENSSLCONF)
 endif()
-file(WRITE openssl/opensslconf.h "${OPENSSLCONF}")
+file(WRITE ${CMAKE_BINARY_DIR}/include/openssl/opensslconf.h "${OPENSSLCONF}")
diff --git a/ssl/CMakeLists.txt b/ssl/CMakeLists.txt
index 90b5025..1ec1a64 100644
--- a/ssl/CMakeLists.txt
+++ b/ssl/CMakeLists.txt
@@ -69,7 +69,8 @@ target_include_directories(ssl_obj
 		../crypto/bio
 		../include/compat
 	PUBLIC
-		../include)
+		../include
+		${CMAKE_BINARY_DIR}/include)
 
 add_library(bs_obj OBJECT ${BS_SRC})
 target_include_directories(bs_obj
diff --git a/tls/CMakeLists.txt b/tls/CMakeLists.txt
index 3d0a619..9993669 100644
--- a/tls/CMakeLists.txt
+++ b/tls/CMakeLists.txt
@@ -45,7 +45,8 @@ target_include_directories(tls_obj
 		.
 		../include/compat
 	PUBLIC
-		../include)
+		../include
+		${CMAKE_BINARY_DIR}/include)
 
 add_library(tls $<TARGET_OBJECTS:tls_obj> $<TARGET_OBJECTS:ssl_obj>
 	$<TARGET_OBJECTS:crypto_obj> empty.c)