Don't try to build linux-specific tests on non-linux

Some tests use linux/input.h (and epoll), but we're building on some
other kernels (e.g. debian freebsd). We could just copy the file but
it's GPL. We could also skip the tests (exit code 77) but it doesn't
really matter.

Signed-off-by: Ran Benita <ran234@gmail.com>

Makefile.am

@@ -123,36 +123,44 @@ TESTS = \
 	test/keysym \
 	test/filecomp \
 	test/rulescomp \
-	test/state \
 	test/context \
 	test/rules-file \
 	test/stringcomp \
-	test/keyseq \
 	test/log
 TESTS_LDADD = libtest.la
 
 test_keysym_LDADD = $(TESTS_LDADD)
 test_filecomp_LDADD = $(TESTS_LDADD)
 test_rulescomp_LDADD = $(TESTS_LDADD) -lrt
-test_state_LDADD = $(TESTS_LDADD)
 test_context_LDADD = $(TESTS_LDADD)
 test_rules_file_CFLAGS = $(AM_CFLAGS) -Wno-declaration-after-statement
 test_rules_file_LDADD = $(TESTS_LDADD) -lrt
 test_stringcomp_LDADD = $(TESTS_LDADD)
-test_keyseq_LDADD = $(TESTS_LDADD)
 test_log_LDADD = $(TESTS_LDADD)
-test_interactive_LDADD = $(TESTS_LDADD)
 test_rmlvo_to_kccgst_LDADD = $(TESTS_LDADD)
 test_print_compiled_keymap_LDADD = $(TESTS_LDADD)
 test_bench_key_proc_LDADD = $(TESTS_LDADD) -lrt
 
 check_PROGRAMS = \
 	$(TESTS) \
-	test/interactive \
 	test/rmlvo-to-kccgst \
 	test/print-compiled-keymap \
 	test/bench-key-proc
 
+if BUILD_LINUX_TESTS
+TESTS += \
+	test/state \
+	test/keyseq
+
+test_keyseq_LDADD = $(TESTS_LDADD)
+test_state_LDADD = $(TESTS_LDADD)
+test_interactive_LDADD = $(TESTS_LDADD)
+
+check_PROGRAMS += \
+	test/interactive
+
+endif BUILD_LINUX_TESTS
+
 EXTRA_DIST = \
 	test/data
 

configure.ac

@@ -73,6 +73,10 @@ fi
 
 AC_CHECK_FUNCS([eaccess euidaccess])
 
+# Some tests use Linux-specific headers
+AC_CHECK_HEADER([linux/input.h])
+AM_CONDITIONAL(BUILD_LINUX_TESTS, [test "x$ac_cv_header_linux_input_h" = xyes])
+
 XORG_TESTSET_CFLAG([BASE_CFLAGS], [-fvisibility=hidden])
 
 # Define a configuration option for the XKB config root

test/bench-key-proc.c

@@ -23,7 +23,6 @@
 
 #include <stdlib.h>
 #include <time.h>
-#include <linux/input.h>
 
 #include "test.h"