From 1423045898bdea94dee99c5865b3a6257fafdf34 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@anytun.org>
Date: Wed, 4 Jan 2017 22:11:32 +0100
Subject: include crypto library in version output

---
 src/configure | 16 +++++++++++-----
 src/options.c |  6 +++---
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/src/configure b/src/configure
index bd0cbaf..b94fdf2 100755
--- a/src/configure
+++ b/src/configure
@@ -183,28 +183,33 @@ case $TARGET in
   ;;
 esac
 
-
+CRYPTO_LIB_NAME=""
 case $CRYPTO_LIB in
   gcrypt)
     CFLAGS=$CFLAGS' -DUSE_GCRYPT'
     LDFLAGS=$LDFLAGS' -lgcrypt'
-    echo "using gcrypt library"
+    CRYPTO_LIB_NAME="libgcrypt"
   ;;
   nettle)
     CFLAGS=$CFLAGS' -DUSE_NETTLE'
     LDFLAGS=$LDFLAGS' -lnettle'
-    echo "using nettle library"
+    CRYPTO_LIB_NAME="Nettle"
   ;;
   ssl)
     CFLAGS=$CFLAGS' -DUSE_SSL_CRYPTO'
     LDFLAGS=$LDFLAGS' -lcrypto'
-    echo "using ssl crypto library"
+    CRYPTO_LIB_NAME="OpenSSL"
   ;;
   none)
     CFLAGS=$CFLAGS' -DNO_CRYPT'
-    echo "disabling crypto"
+    CRYPTO_LIB_NAME="none"
+  ;;
+  *)
+    echo "unknown crypto library: $$CRYPTO_LIB"
+    exit 1
   ;;
 esac
+echo "crypto-library: $CRYPTO_LIB_NAME"
 
 if [ $PASSPHRASE -eq 0 ]; then
   CFLAGS=$CFLAGS' -DNO_PASSPHRASE'
@@ -283,6 +288,7 @@ cat > version.h <<EOF
 #define UANYTUN_version_h_INCLUDED
 
 #define VERSION_STRING "uanytun version $VERSION"
+#define CRYPTO_LIB_NAME "$CRYPTO_LIB_NAME"
 
 #endif
 
diff --git a/src/options.c b/src/options.c
index d564d39..db85771 100644
--- a/src/options.c
+++ b/src/options.c
@@ -485,11 +485,11 @@ void options_print_version()
 {
   printf("%s\n", VERSION_STRING);
 #if defined(__clang__)
-  printf("built using CLANG %s\n", __clang_version__);
+  printf("built using CLANG %s with %s crypto library.\n", __clang_version__, CRYPTO_LIB_NAME);
 #elif defined(__GNUC__)
-  printf("built using GCC %d.%d.%d\n", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__);
+  printf("built using GCC %d.%d.%d with %s crypto library\n", __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__, CRYPTO_LIB_NAME);
 #else
-  printf("built using an unknown compiler\n");
+  printf("built using an unknown compiler with %s crypto library\n", CRYPTO_LIB_NAME, CRYPTO_LIB_NAME);
 #endif
 }
 
-- 
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