From 83a4c3c3c53c6ab171ee786ba7c9f509d73f36fd Mon Sep 17 00:00:00 2001
From: Björn Jacke <bjacke@samba.org>
Date: Fri, 30 Oct 2020 15:31:42 +0100
Subject: configure: check for pragma init/fini for constructors/destructors

Signed-off-by: Bjoern Jacke <bjacke@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
---
 ConfigureChecks.cmake | 26 ++++++++++++++++++++++++++
 config.h.cmake        |  2 ++
 2 files changed, 28 insertions(+)

diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 4a2f55e..3c8e615 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -216,6 +216,32 @@ int main(void) {
     return 0;
 }" HAVE_DESTRUCTOR_ATTRIBUTE)
 
+check_c_source_compiles("
+#pragma init (test_constructor)
+void test_constructor(void);
+
+void test_constructor(void)
+{
+    return;
+}
+
+int main(void) {
+    return 0;
+}" HAVE_PRAGMA_INIT)
+
+check_c_source_compiles("
+#pragma fini (test_destructor)
+void test_destructor(void);
+
+void test_destructor(void)
+{
+    return;
+}
+
+int main(void) {
+    return 0;
+}" HAVE_PRAGMA_FINI)
+
 check_c_source_compiles("
 #define FALL_THROUGH __attribute__((fallthrough))
 
diff --git a/config.h.cmake b/config.h.cmake
index d3ceb23..38166d2 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -66,6 +66,8 @@
 #cmakedefine HAVE_GCC_THREAD_LOCAL_STORAGE 1
 #cmakedefine HAVE_CONSTRUCTOR_ATTRIBUTE 1
 #cmakedefine HAVE_DESTRUCTOR_ATTRIBUTE 1
+#cmakedefine HAVE_PRAGMA_INIT 1
+#cmakedefine HAVE_PRAGMA_FINI 1
 #cmakedefine HAVE_FALLTHROUGH_ATTRIBUTE 1
 #cmakedefine HAVE_ADDRESS_SANITIZER_ATTRIBUTE 1
 #cmakedefine HAVE_SOCKADDR_STORAGE 1
-- 
cgit