Add a configure test for syslog support.

[dxcommon.git] / tests / libs.at

diff --git a/tests/libs.at b/tests/libs.at
index 1d327cc1afcc335b27d852120f9326c471b31de9..f7cf534739fb5abcdcf29111df8c1c4b7d23d11d 100644 (file)
--- a/tests/libs.at
+++ b/tests/libs.at
@@ -1,4 +1,4 @@
-dnl Copyright © 2019-2020, 2022 Nick Bowler
+dnl Copyright © 2019-2020, 2022-2023 Nick Bowler
 dnl
 dnl License WTFPL2: Do What The Fuck You Want To Public License, version 2.
 dnl This is free software: you are free to do what the fuck you want to.
@@ -355,3 +355,43 @@ AT_CHECK([grep '#.*G_IMPLEMENT_INLINES' config.h], [0],
 ])
 
 AT_CLEANUP
+
+AT_SETUP([DX_CHECK_SYSLOG])
+
+AT_DATA([syslog.h],
+[[/* since syslog is normally in the standard C library, to make negative
+link tests possible we use a dummy external name */
+extern void dx_closelog(void);
+
+static void openlog(const char *, int, int) { dx_closelog(); }
+static void syslog(int, const char *, ...) { dx_closelog(); }
+static void closelog(void) { dx_closelog(); }
+
+#define LOG_PID  1
+#define LOG_USER 2
+#define LOG_ERR  0
+]])
+
+AT_DATA([test.in],
+[[@ac_cv_header_syslog_h@
+@dx_cv_have_syslog@
+]])
+
+TEST_CONFIGURE_AC([[DX_CHECK_SYSLOG
+AC_SUBST([ac_cv_header_syslog_h])
+AC_SUBST([dx_cv_have_syslog])
+AC_CONFIG_FILES([test])
+]])
+TEST_AUTORECONF
+
+TEST_CONFIGURE([CFLAGS=-I.])
+AT_CHECK([cat test], [0], [yes
+no
+])
+
+TEST_CONFIGURE([CFLAGS=-I. LIBS="$builddir/t/libdummy.a"])
+AT_CHECK([cat test], [0], [yes
+yes
+])
+
+AT_CLEANUP