From 37a05418820dfcdb68bc0d535e76e63945b45917 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 12 Mar 2020 17:18:40 +0100
Subject: cmake: add support for building with wolfSSL

My working build cmdline:

$ cmake -DCMAKE_PREFIX_PATH=$HOME/build-wolfssl -DCMAKE_USE_WOLFSSL=ON .

Assisted-by: Brad King
Closes #5095
---
 CMakeLists.txt | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73b053b31..e412b0520 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -298,7 +298,7 @@ if(WIN32)
 endif()
 
 # check SSL libraries
-# TODO support GnuTLS and WolfSSL
+# TODO support GnuTLS
 
 if(APPLE)
   option(CMAKE_USE_SECTRANSP "enable Apple OS native SSL/TLS" OFF)
@@ -311,9 +311,10 @@ endif()
 option(CMAKE_USE_MBEDTLS "Enable mbedTLS for SSL/TLS" OFF)
 option(CMAKE_USE_BEARSSL "Enable BearSSL for SSL/TLS" OFF)
 option(CMAKE_USE_NSS "Enable NSS for SSL/TLS" OFF)
+option(CMAKE_USE_WOLFSSL "enable wolfSSL for SSL/TLS" OFF)
 
 set(openssl_default ON)
-if(WIN32 OR CMAKE_USE_SECTRANSP OR CMAKE_USE_WINSSL OR CMAKE_USE_MBEDTLS OR CMAKE_USE_NSS)
+if(WIN32 OR CMAKE_USE_SECTRANSP OR CMAKE_USE_WINSSL OR CMAKE_USE_MBEDTLS OR CMAKE_USE_NSS OR CMAKE_USE_WOLFSSL)
   set(openssl_default OFF)
 endif()
 option(CMAKE_USE_OPENSSL "Use OpenSSL code. Experimental" ${openssl_default})
@@ -325,6 +326,7 @@ count_true(enabled_ssl_options_count
   CMAKE_USE_MBEDTLS
   CMAKE_USE_BEARSSL
   CMAKE_USE_NSS
+  CMAKE_USE_WOLFSSL
 )
 if(enabled_ssl_options_count GREATER "1")
   set(CURL_WITH_MULTI_SSL ON)
@@ -405,6 +407,14 @@ if(CMAKE_USE_BEARSSL)
   include_directories(${BEARSSL_INCLUDE_DIRS})
 endif()
 
+if(CMAKE_USE_WOLFSSL)
+  find_package(WolfSSL REQUIRED)
+  set(SSL_ENABLED ON)
+  set(USE_WOLFSSL ON)
+  list(APPEND CURL_LIBS ${WolfSSL_LIBRARIES})
+  include_directories(${WolfSSL_INCLUDE_DIRS})
+endif()
+
 if(CMAKE_USE_NSS)
   find_package(NSS REQUIRED)
   include_directories(${NSS_INCLUDE_DIRS})
@@ -750,7 +760,7 @@ elseif(CURL_CA_PATH_AUTODETECT OR CURL_CA_BUNDLE_AUTODETECT)
 endif()
 
 if(CURL_CA_PATH_SET AND NOT USE_OPENSSL AND NOT USE_MBEDTLS)
-  message(FATAL_ERROR
+  message(STATUS
           "CA path only supported by OpenSSL, GnuTLS or mbed TLS. "
           "Set CURL_CA_PATH=none or enable one of those TLS backends.")
 endif()
@@ -1311,6 +1321,7 @@ _add_if("Secure Transport" SSL_ENABLED AND USE_SECTRANSP)
 _add_if("mbedTLS"          SSL_ENABLED AND USE_MBEDTLS)
 _add_if("BearSSL"          SSL_ENABLED AND USE_BEARSSL)
 _add_if("NSS"              SSL_ENABLED AND USE_NSS)
+_add_if("wolfSSL"          SSL_ENABLED AND USE_WOLFSSL)
 if(_items)
   list(SORT _items)
 endif()
-- 
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