libzint.so: suppress exporting INTERNAL functions to the shared library; ZINT_TEST

backend/tests/CMakeLists.txt

@@ -10,6 +10,7 @@ set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/"
 
 set(ZINT_DEBUG FALSE CACHE BOOL "Set debug compile flag")
 set(ZINT_SANITIZE FALSE CACHE BOOL "Set sanitize compile/link flags")
+set(ZINT_TEST FALSE CACHE BOOL "Set test compile flag")
 
 find_package (LibZint 2.7.0 REQUIRED)
 find_package(PNG)
@@ -29,6 +30,9 @@ if (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
         add_compile_options("-fsanitize=address")
         set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined -fsanitize=address")
     endif (ZINT_SANITIZE)
+    if (ZINT_TEST)
+        add_definitions("-DZINT_TEST")
+    endif (ZINT_TEST)
 endif ()
 
 add_library(testcommon

backend/tests/README

@@ -1,15 +1,25 @@
 Zint backend test suite
 -----------------------
 
-To make:
+To make, first make libzint with ZINT_TEST defined:
+
+  cd <project-dir>
+  mkdir build
+  cd build
+  cmake -DZINT_TEST:BOOL:1 ..
+  make
+
+Then make the tests:
 
   cd <project-dir>
   cd backend/tests
   mkdir build
   cd build
-  cmake ..
+  cmake -DZINT_TEST:BOOL:1 ..
   make
 
+(ZINT_TEST is needed to export INTERNAL functions for use and testing.)
+
 To run all tests:
 
   make test
@@ -50,4 +60,8 @@ To undo sanitize/debug, remake each after setting:
   cmake -DZINT_SANITIZE:BOOL=0 ..
   cmake -DZINT_DEBUG:BOOL=0 ..
 
-Note that sanitize is not safe to use in production, as it's a security risk.
+To get a clean libzint, set the above and also:
+
+  cmake -DZINT_TEST:BOOL=0 ..
+
+(The tests will now fail to link.)

backend/tests/testcommon.h

@@ -37,9 +37,7 @@
 #define TESTCOMMON_H
 
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
-#include <zint.h>
 #include "../common.h"
 
 extern int assertionFailed;