OCR support, remove static build

src/ctx.h

@@ -27,6 +27,7 @@ struct {
     GHashTable *copy_table;
 
     pthread_mutex_t mupdf_mu;
+    char * tesseract_lang;
 } ScanCtx;
 
 struct {
@@ -35,7 +36,6 @@ struct {
     int no_color;
 } LogCtx;
 
-#ifndef SIST_SCAN_ONLY
 struct {
     char *es_url;
     int batch_size;
@@ -47,7 +47,6 @@ struct {
     char *b64credentials;
     struct index_t indices[16];
 } WebCtx;
-#endif
 
 
 #endif