Give an error when dependencies are unmet

pkcs7/envelopedData-kari.c

@@ -246,7 +246,7 @@ int main(int argc, char** argv)
 int main(int argc, char** argv)
 {
     printf("Must build wolfSSL using ./configure --enable-pkcs7\n");
-    return 0;
+    return -1;
 }
 
 #endif

pkcs7/envelopedData-kekri.c

@@ -191,7 +191,7 @@ int main(int argc, char** argv)
 int main(int argc, char** argv)
 {
     printf("Must build wolfSSL using ./configure --enable-pkcs7\n");
-    return 0;
+    return -1;
 }
 
 #endif

pkcs7/envelopedData-ktri-stream.c

@@ -309,7 +309,7 @@ int main(int argc, char** argv)
 int main(int argc, char** argv)
 {
     printf("Must build wolfSSL using ./configure --enable-pkcs7 --enable-indef\n");
-    return 0;
+    return -1;
 }
 
 #endif

pkcs7/envelopedData-ktri.c

@@ -233,7 +233,7 @@ int main(int argc, char** argv)
 int main(int argc, char** argv)
 {
     printf("Must build wolfSSL using ./configure --enable-pkcs7\n");
-    return 0;
+    return -1;
 }
 
 #endif

pkcs7/envelopedData-ori.c

@@ -294,7 +294,7 @@ int main(int argc, char** argv)
 int main(int argc, char** argv)
 {
     printf("Must build wolfSSL using ./configure --enable-pkcs7\n");
-    return 0;
+    return -1;
 }
 
 #endif

pkcs7/envelopedData-pwri.c

@@ -186,7 +186,7 @@ int main(int argc, char** argv)
 {
     printf("Must build wolfSSL using ./configure --enable-pkcs7 "
            "--enable-pwdbased\n");
-    return 0;
+    return -1;
 }
 
 #endif /* HAVE_PKCS7 & !NO_PWDBASED */

pkcs7/envelopedDataDecode.c

@@ -177,7 +177,7 @@ int main(int argc, char** argv)
 int main(int argc, char** argv)
 {
     printf("Must build wolfSSL using ./configure --enable-pkcs7\n");
-    return 0;
+    return -1;
 }
 
 #endif