initial wasm support

.patch/openssl-cmake/0005-wasm-support.patch

@@ -0,0 +1,55 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 1ca57e1..d38c0c6 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -113,9 +113,10 @@ elseif(MINGW)
+     find_program(MAKE mingw32-make REQUIRED)
+     set(OPENSSL_BUILD_TOOL ${MAKE})
+ else()
+-    find_program(MAKE make REQUIRED)
++    find_program(MAKE gmake REQUIRED)
+     set(OPENSSL_BUILD_TOOL ${MAKE})
+ endif()
++set(OPENSSL_BUILD_TOOL gmake)
+ 
+ # Modify configure/build options
+ if(OPENSSL_TEST AND NOT CMAKE_CROSSCOMPILING)
+@@ -140,7 +141,7 @@ if(NUMBER_OF_THREADS GREATER 1)
+         list(APPEND OPENSSL_CONFIGURE_OPTIONS /FS)
+         list(APPEND OPENSSL_BUILD_OPTIONS /J ${NUMBER_OF_THREADS})
+     else()
+-        list(APPEND OPENSSL_BUILD_OPTIONS -j ${NUMBER_OF_THREADS})
++#        list(APPEND OPENSSL_BUILD_OPTIONS -j ${NUMBER_OF_THREADS})
+     endif()
+ endif()
+ 
+diff --git a/cmake/ConfigureOpenSSL.cmake b/cmake/ConfigureOpenSSL.cmake
+index 3012e05..9862aa0 100644
+--- a/cmake/ConfigureOpenSSL.cmake
++++ b/cmake/ConfigureOpenSSL.cmake
+@@ -134,10 +134,24 @@ function(configure_openssl)
+         set(VERBOSE_OPTION OUTPUT_QUIET)
+     endif()
+ 
++    if (CMAKE_SYSTEM_NAME MATCHES "Emscripten")
++        set(EMSCRIPTEN_CMAKE_WRAPPER "emcmake")
++        find_program(EMCC emcc REQUIRED)
++        set(EMSCRIPTEN_LINKER ${EMCC})
++        list(APPEND CONFIGURE_COMMAND wasm64)
++    else()
++        set(EMSCRIPTEN_CMAKE_WRAPPER "")
++        set(EMSCRIPTEN_LINKER ${CMAKE_LINKER})
++    endif ()
++
+     execute_process(
+-        COMMAND ${CMAKE_COMMAND} -E env
++        COMMAND ${EMSCRIPTEN_CMAKE_WRAPPER} ${CMAKE_COMMAND} -E env
+             "CFLAGS=${CMAKE_C_FLAGS}"
+             "CXXFLAGS=${CMAKE_CXX_FLAGS}"
++            "LDFLAGS=${CMAKE_CXX_LINKER_FLAGS}"
++            "CC=${CMAKE_C_COMPILER}"
++            "CXX=${CMAKE_CXX_COMPILER}"
++            "LD=${EMSCRIPTEN_LINKER}"
+             ${CONFIGURE_COMMAND}
+         WORKING_DIRECTORY ${CONFIGURE_BUILD_DIR}
+         ${VERBOSE_OPTION}

.patch/openssl/0002-wasm-support.patch

@@ -0,0 +1,108 @@
+diff --git a/Configurations/10-main.conf b/Configurations/10-main.conf
+index e62721e..6fcea0d 100644
+--- a/Configurations/10-main.conf
++++ b/Configurations/10-main.conf
+@@ -1970,6 +1970,26 @@ my %targets = (
+         multilib         => "64",
+     },
+ 
++    "wasm32" => {
++        inherit_from     => [ "BASE_unix" ],
++        CC               => "emcc",
++        CXX              => "emc++",
++        cflags           => add("--target=wasm32-unknown-emscripten"),
++        cxxflags         => add("--target=wasm32-unknown-emscripten"),
++        lib_cppflags     => add("-DL_ENDIAN"),
++        bn_ops           => "THIRTY_TWO_BIT",
++    },
++    "wasm64" => {
++        inherit_from     => [ "BASE_unix" ],
++        CC               => "emcc",
++        CXX              => "emc++",
++        cflags           => add("--target=wasm64-unknown-emscripten"),
++        cxxflags         => add("--target=wasm64-unknown-emscripten"),
++        lib_cppflags     => add("-DL_ENDIAN"),
++        bn_ops           => "SIXTY_FOUR_BIT_LONG",
++    },
++
++
+ #### uClinux
+     "uClinux-dist" => {
+         inherit_from     => [ "BASE_unix" ],
+diff --git a/crypto/rand/rand_lib.c b/crypto/rand/rand_lib.c
+index d9e8f02..0bd63b0 100644
+--- a/crypto/rand/rand_lib.c
++++ b/crypto/rand/rand_lib.c
+@@ -379,17 +379,25 @@ void RAND_add(const void *buf, int num, double randomness)
+ #if !defined(OPENSSL_NO_DEPRECATED_1_1_0)
+ int RAND_pseudo_bytes(unsigned char *buf, int num)
+ {
++#ifdef __EMSCRIPTEN__
++    arc4random_buf(buf, num);
++    return 1;
++#else
+     const RAND_METHOD *meth = RAND_get_rand_method();
+ 
+     if (meth != NULL && meth->pseudorand != NULL)
+         return meth->pseudorand(buf, num);
+     ERR_raise(ERR_LIB_RAND, RAND_R_FUNC_NOT_IMPLEMENTED);
+     return -1;
++#endif
+ }
+ #endif
+ 
+ int RAND_status(void)
+ {
++#ifdef __EMSCRIPTEN__
++    return 1;
++#else
+     EVP_RAND_CTX *rand;
+ #ifndef OPENSSL_NO_DEPRECATED_3_0
+     const RAND_METHOD *meth = RAND_get_rand_method();
+@@ -401,6 +409,7 @@ int RAND_status(void)
+     if ((rand = RAND_get0_primary(NULL)) == NULL)
+         return 0;
+     return EVP_RAND_get_state(rand) == EVP_RAND_STATE_READY;
++#endif
+ }
+ #else /* !FIPS_MODULE */
+ 
+@@ -420,6 +429,10 @@ const RAND_METHOD *RAND_get_rand_method(void)
+ int RAND_priv_bytes_ex(OSSL_LIB_CTX *ctx, unsigned char *buf, size_t num,
+     unsigned int strength)
+ {
++#ifdef __EMSCRIPTEN__
++    arc4random_buf(buf, num);
++    return 1;
++#else
+     RAND_GLOBAL *dgbl;
+     EVP_RAND_CTX *rand;
+ #if !defined(OPENSSL_NO_DEPRECATED_3_0) && !defined(FIPS_MODULE)
+@@ -451,6 +464,7 @@ int RAND_priv_bytes_ex(OSSL_LIB_CTX *ctx, unsigned char *buf, size_t num,
+         return EVP_RAND_generate(rand, buf, num, strength, 0, NULL, 0);
+ 
+     return 0;
++#endif
+ }
+ 
+ int RAND_priv_bytes(unsigned char *buf, int num)
+diff --git a/ssl/ssl_cert.c b/ssl/ssl_cert.c
+index 3d21801..e026f8f 100644
+--- a/ssl/ssl_cert.c
++++ b/ssl/ssl_cert.c
+@@ -941,6 +941,7 @@ done:
+     return ret;
+ }
+ 
++#ifndef OPENSSL_NO_POSIX_IO
+ int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
+     const char *dir)
+ {
+@@ -1016,6 +1017,7 @@ err:
+ 
+     return ret;
+ }
++#endif
+ 
+ static int add_uris_recursive(STACK_OF(X509_NAME) *stack,
+     const char *uri, int depth)