From 011ef3e69ecc641d085cdba424e7312b8dfc49a8 Mon Sep 17 00:00:00 2001
From: Juliusz Sosinowicz <juliusz@wolfssl.com>
Date: Fri, 1 Apr 2022 11:32:23 +0200
Subject: [PATCH] Patch for wolfSSL

This patch is made for git version 2.35.1/

Compile wolfSSL with:
```
./configure --enable-opensslextra
make
make install
```

Compile git with:
```
patch -p1 < /path/to/this/patch
make USE_WOLFSSL=1 OPENSSL_SHA1=1 OPENSSL_SHA256=1
make USE_WOLFSSL=1 OPENSSL_SHA1=1 OPENSSL_SHA256=1 install
```

If you gave installed wolfSSL in a non-standard directory then you can use the `WOLFSSSLDIR` variable to point git to that directory as such:
```
make USE_WOLFSSL=1 OPENSSL_SHA1=1 OPENSSL_SHA256=1 WOLFSSSLDIR=/path/to/wolfssl/install
make USE_WOLFSSL=1 OPENSSL_SHA1=1 OPENSSL_SHA256=1 WOLFSSSLDIR=/path/to/wolfssl/install install
```

All of the tests run with `make USE_WOLFSSL=1 OPENSSL_SHA1=1 OPENSSL_SHA256=1 test` should pass
---
 Makefile | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 5580859afd..ad4114759d 100644
--- a/Makefile
+++ b/Makefile
@@ -27,6 +27,9 @@ all::
 #
 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
 #
+# Define USE_WOLFSSL environment variable if you want to use wolfSSL instead
+# of OpenSSL
+#
 # Define USE_LIBPCRE if you have and want to use libpcre. Various
 # commands such as log and grep offer runtime options to use
 # Perl-compatible regular expressions instead of standard or extended
@@ -1458,7 +1461,7 @@ else
 		endif
 	endif
 endif
-IMAP_SEND_LDFLAGS += $(OPENSSL_LINK) $(OPENSSL_LIBSSL) $(LIB_4_CRYPTO)
+IMAP_SEND_LDFLAGS += $(OPENSSL_LINK) $(OPENSSL_LIBSSL) $(LIB_4_CRYPTO) $(WOLFSSL_LINK)
 
 ifdef ZLIB_PATH
 	BASIC_CFLAGS += -I$(ZLIB_PATH)/include
@@ -1466,6 +1469,15 @@ ifdef ZLIB_PATH
 endif
 EXTLIBS += -lz
 
+ifdef USE_WOLFSSL
+	NO_OPENSSL = YesPlease
+	ifndef WOLFSSSLDIR
+		WOLFSSSLDIR = /usr/local
+	endif
+	BASIC_CFLAGS += -I$(WOLFSSSLDIR)/include -I$(WOLFSSSLDIR)/include/wolfssl -DEXTERNAL_OPTS_OPENVPN -DUSE_WOLFSSL
+	WOLFSSL_LINK = -L$(WOLFSSSLDIR)/$(lib) $(CC_LD_DYNPATH)$(WOLFSSSLDIR)/$(lib)
+endif
+
 ifndef NO_OPENSSL
 	OPENSSL_LIBSSL = -lssl
 	ifdef OPENSSLDIR
@@ -1478,11 +1490,16 @@ ifndef NO_OPENSSL
 		OPENSSL_LIBSSL += -lcrypto
 	endif
 else
-	BASIC_CFLAGS += -DNO_OPENSSL
+	ifndef NO_OPENSSL
+		BASIC_CFLAGS += -DNO_OPENSSL
+	endif
 	OPENSSL_LIBSSL =
 endif
 ifdef NO_OPENSSL
 	LIB_4_CRYPTO =
+	ifdef USE_WOLFSSL
+		LIB_4_CRYPTO = $(WOLFSSL_LINK) -lwolfssl
+	endif
 else
 ifdef NEEDS_SSL_WITH_CRYPTO
 	LIB_4_CRYPTO = $(OPENSSL_LINK) -lcrypto -lssl
-- 
2.25.1