From fb012a005573435af7fef8d37df39c06b3c37c65 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@des.dev>
Date: Thu, 9 Jul 2026 09:26:24 +0200
Subject: [PATCH] CMake: Fix symbol versioning tests

The tests were trying to produce a versioned executable, which isn't
what we actually want and does not reliably work.  Change the tests so
they try to produce a versioned library instead.
---
 CMakeLists.txt | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5a540774..c5d7a7ba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -304,17 +304,17 @@ if(JANSSON_BUILD_SHARED_LIBS)
       src/jansson.def)
 
 # check if linker support --default-symver
-   list(APPEND CMAKE_REQUIRED_LIBRARIES "-Wl,--default-symver")
+   list(APPEND CMAKE_REQUIRED_LIBRARIES "-shared -Wl,--default-symver")
    check_c_source_compiles(
    "
-   int main (void)
+   int function (void)
    {
       return 0;
    }
    "
    SYMVER_WORKS
    )
-   list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES "-Wl,--default-symver")
+   list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES "-shared -Wl,--default-symver")
 
    if (SYMVER_WORKS)
       set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--default-symver")
@@ -328,17 +328,17 @@ if(JANSSON_BUILD_SHARED_LIBS)
           *;
 };
 ")
-      list(APPEND CMAKE_REQUIRED_LIBRARIES "-Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/jansson.sym")
+      list(APPEND CMAKE_REQUIRED_LIBRARIES "-shared -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/jansson.sym")
       check_c_source_compiles(
    "
-   int main (void)
+   int function (void)
    {
       return 0;
    }
    "
    VSCRIPT_WORKS
    )
-      list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES "-Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/jansson.sym")
+      list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES "-shared -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/jansson.sym")
       if (VSCRIPT_WORKS)
          set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/jansson.sym")
       endif()