adding for_autoconf() C function for autoconf AC_CHECK_LIB feature

Edrusb · Oct 15, 2024 · 5c02446 · 5c02446
1 parent 4576b3d
commit 5c02446
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diff --git a/src/libdar/get_version.cpp b/src/libdar/get_version.cpp
@@ -287,3 +287,12 @@ namespace libdar
 
 
 } // end of namespace
+
+extern "C"
+{
+    unsigned int for_autoconf(unsigned int x)
+    {
+        return x+1;
+    }
+}
+
diff --git a/src/libdar/get_version.hpp b/src/libdar/get_version.hpp
@@ -149,4 +149,14 @@ namespace libdar
 
 } // end of namespace
 
+extern "C"
+{
+        /// in case you use autoconf AC_CHECK_LIB in your program to detect the availability of libdar
+
+        /// use AC_CHECK_LIB(dar, [for_autoconf], [], [])
+        /// to have autoconf based configure script properly detecting
+        /// the presence and usability of libthreadar
+    extern unsigned int for_autoconf(unsigned int x);
+}
+
 #endif