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authorGravatar Nikias Bassen2021-09-13 18:38:56 +0200
committerGravatar Nikias Bassen2021-09-13 18:38:56 +0200
commit042c1a264a7e853fcdfc9c6a1b0090d56fc3ff81 (patch)
tree771993627b6b7ba8f1d94013341528b4e56cb09a /configure.ac
parent90355270862eb89269feb967da16e61828901284 (diff)
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Check availability of constructor attribute and use it on Windows in favor of DllMain
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac18
1 files changed, 18 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 2b5c430..bfc443e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -72,6 +72,24 @@ case ${host_os} in
esac
AM_CONDITIONAL(WIN32, test x$win32 = xtrue)
+# Check if the C compiler supports __attribute__((constructor))
+AC_CACHE_CHECK([wether the C compiler supports constructor/destructor attributes],
+ ac_cv_attribute_constructor, [
+ ac_cv_attribute_constructor=no
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+ [[
+ static void __attribute__((constructor)) test_constructor(void) {
+ }
+ static void __attribute__((destructor)) test_destructor(void) {
+ }
+ ]], [])],
+ [ac_cv_attribute_constructor=yes]
+ )]
+)
+if test "$ac_cv_attribute_constructor" = "yes"; then
+ AC_DEFINE(HAVE_ATTRIBUTE_CONSTRUCTOR, 1, [Define if the C compiler supports constructor/destructor attributes])
+fi
+
AC_CHECK_MEMBER(struct dirent.d_type, AC_DEFINE(HAVE_DIRENT_D_TYPE, 1, [define if struct dirent has member d_type]),, [#include <dirent.h>])
AS_COMPILER_FLAGS(GLOBAL_CFLAGS, "-Wall -Wextra -Wmissing-declarations -Wredundant-decls -Wshadow -Wpointer-arith -Wwrite-strings -Wswitch-default -Wno-unused-parameter -fsigned-char -fvisibility=hidden")