From f6046e63a840094edcf26df721861950c8f53638 Mon Sep 17 00:00:00 2001
From: Michael Ortmann <keine email>
Date: Tue, 3 Oct 2023 00:29:10 +0200
Subject: [PATCH] soft require openssl

---
 aclocal.m4 | 93 ++++++++++++++++++++++++++++--------------------------
 1 file changed, 49 insertions(+), 44 deletions(-)

diff --git a/aclocal.m4 b/aclocal.m4
index 2d798e2497..6292d7c5aa 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1530,13 +1530,10 @@ AC_DEFUN([EGG_TLS_ENABLE],
 [
   AC_MSG_CHECKING([whether to enable TLS support])
   AC_ARG_ENABLE(tls,
-    [  --enable-tls            enable TLS support (autodetect)],
-    [enable_tls="$enableval"])
-  AC_ARG_ENABLE(tls,
-    [  --disable-tls           disable TLS support ], [enable_tls="$enableval"],
-    [enable_tls="autodetect"])
+    [  --disable-tls           disable TLS support ], [tls_enabled="$enableval"],
+    [tls_enabled="$enableval"])
 
-  AC_MSG_RESULT([$enable_tls])
+  AC_MSG_RESULT([$tls_enabled])
 ])
 
 
@@ -1546,46 +1543,58 @@ AC_DEFUN(EGG_TLS_WITHSSL,
 [
   save_LIBS="$LIBS"
   AC_ARG_WITH(sslinc, [  --with-sslinc=PATH      Path to OpenSSL headers], [
-    if test "$enable_tls" != "no"; then
-      if test -d "$withval"; then
-        save_CC="$CC"
-        save_CPP="$CPP"
-        CC="$CC -I$withval"
-        CPP="$CPP -I$withval"
-        AC_CHECK_HEADERS([openssl/ssl.h openssl/x509v3.h], [sslinc="-I$withval"], [
+    if test -d "$withval"; then
+      save_CC="$CC"
+      save_CPP="$CPP"
+      CC="$CC -I$withval"
+      CPP="$CPP -I$withval"
+      AC_CHECK_HEADERS([openssl/ssl.h openssl/x509v3.h], [sslinc="-I$withval"], [
+        if test "$tls_enabled" != "no"; then
           AC_MSG_WARN([Invalid path to OpenSSL headers. $withval/openssl/ doesn't contain the required files.])
-          sslinc=""
-          break
-        ], [[
-          #ifdef CYGWIN_HACKS
-          #  ifndef __int64
-          #    define __int64 long long
-          #  endif
-          #endif
-        ]])
-        AC_SUBST(SSL_INCLUDES, [$sslinc])
-        CC="$save_CC"
-        CPP="$save_CPP"
-      else
+        else
+          AC_MSG_ERROR([Invalid path to OpenSSL headers. $withval/openssl/ doesn't contain the required files.])
+        fi
+        sslinc=""
+        break
+      ], [[
+        #ifdef CYGWIN_HACKS
+        #  ifndef __int64
+        #    define __int64 long long
+        #  endif
+        #endif
+      ]])
+      AC_SUBST(SSL_INCLUDES, [$sslinc])
+      CC="$save_CC"
+      CPP="$save_CPP"
+    else
+      if test "$tls_enabled" != "no"; then
         AC_MSG_WARN([Invalid path to OpenSSL headers. $withval is not a directory.])
+      else
+        AC_MSG_ERROR([Invalid path to OpenSSL headers. $withval is not a directory.])
       fi
     fi
   ])
 
   AC_ARG_WITH(ssllib, [  --with-ssllib=PATH      Path to OpenSSL libraries],
   [
-    if test "$enable_tls" != "no"; then
-      if test -d "$withval"; then
-        AC_CHECK_LIB(crypto, X509_digest, , [havessllib="no"], [-L$withval -lssl])
-        AC_CHECK_LIB(ssl, SSL_accept, , [havessllib="no"], [-L$withval -lcrypto])
-        if test "$havessllib" = "no"; then
+    if test -d "$withval"; then
+      AC_CHECK_LIB(crypto, X509_digest, , [havessllib="no"], [-L$withval -lssl])
+      AC_CHECK_LIB(ssl, SSL_accept, , [havessllib="no"], [-L$withval -lcrypto])
+      if test "$havessllib" = "no"; then
+        if test "$tls_enabled" != "no"; then
           AC_MSG_WARN([Invalid path to OpenSSL libs. $withval doesn't contain the required files.])
         else
-          AC_SUBST(SSL_LIBS, [-L$withval])
-          LDFLAGS="${LDFLAGS} -L$withval"
+          AC_MSG_ERROR([Invalid path to OpenSSL libs. $withval doesn't contain the required files.])
         fi
       else
+        AC_SUBST(SSL_LIBS, [-L$withval])
+        LDFLAGS="${LDFLAGS} -L$withval"
+      fi
+    else
+      if test "$tls_enabled" != "no"; then
         AC_MSG_WARN([You have specified an invalid path to OpenSSL libs. $withval is not a directory.])
+      else
+        AC_MSG_ERROR([You have specified an invalid path to OpenSSL libs. $withval is not a directory.])
       fi
     fi
   ])
@@ -1596,7 +1605,6 @@ dnl EGG_TLS_DETECT
 dnl
 AC_DEFUN([EGG_TLS_DETECT],
 [
-  tls_enabled="no"
   if test "$enable_tls" != "no"; then
     if test -z "$SSL_INCLUDES"; then
       AC_CHECK_HEADERS([openssl/ssl.h openssl/x509v3.h], , [havesslinc="no"], [
@@ -1632,15 +1640,13 @@ AC_DEFUN([EGG_TLS_DETECT],
           break
       ]])
     )
-    if test "$enable_tls" = "yes"; then
-      if test "$havesslinc" = "no"; then
-        AC_MSG_WARN([Cannot find OpenSSL headers.])
-        AC_MSG_WARN([Please specify the path to the openssl include dir using --with-sslinc=path])
-      fi
-      if test "$havessllib" = "no"; then
-        AC_MSG_WARN([Cannot find OpenSSL libraries.])
-        AC_MSG_WARN([Please specify the path to libssl and libcrypto using --with-ssllib=path])
-      fi
+    if test "$havesslinc" = "no"; then
+      AC_MSG_ERROR([Cannot find OpenSSL headers.])
+      AC_MSG_ERROR([Please specify the path to the openssl include dir using --with-sslinc=path])
+    fi
+    if test "$havessllib" = "no"; then
+      AC_MSG_ERROR([Cannot find OpenSSL libraries.])
+      AC_MSG_ERROR([Please specify the path to libssl and libcrypto using --with-ssllib=path])
     fi
     AC_MSG_CHECKING([for OpenSSL])
     if test "$havesslinc" = "no" || test "$havessllib" = "no"; then
@@ -1660,7 +1666,6 @@ AC_DEFUN([EGG_TLS_DETECT],
       )
       dnl EVP_PKEY_get1_EC_KEY: OpenSSL without EC (SunOS 5.11 Solaris 11.3 I love you Oracle)
       AC_CHECK_FUNCS([EVP_PKEY_get1_EC_KEY])
-      tls_enabled="yes"
       EGG_MD5_COMPAT
     fi
   fi