Clean up feature tests:

* Split the configure steering script out of the Makefile.
* Let the configure step depend on the test sources.
* Clean up the test programs such that they can be run.

1 files changed, 45 insertions, 0 deletions

diff --git a/configure b/configure
new file mode 100755
index 00000000..1d164697
--- /dev/null
+++ b/configure
@@ -0,0 +1,45 @@
+#!/bin/sh
+#
+# Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+set -e
+exec > config.h 2> config.log
+
+CFLAGS="${CFLAGS} -Wno-unused -Werror"
+
+runtest() {
+	echo ${CC} ${CFLAGS} -o test-${1} test-${1}.c 1>&2
+	${CC} ${CFLAGS} -o "test-${1}" "test-${1}.c" 1>&2 || return 0
+	"./test-${1}" && echo "#define HAVE_${2}" \
+		|| echo FAILURE: test-${1} returned $? 1>&2
+	rm "test-${1}"
+}
+
+cat config.h.pre
+echo
+echo "#define VERSION \"${VERSION}\""
+runtest fgetln FGETLN
+runtest getsubopt GETSUBOPT
+runtest mmap MMAP
+runtest ohash OHASH
+runtest strcasestr STRCASESTR
+runtest strlcat STRLCAT
+runtest strlcpy STRLCPY
+runtest strptime STRPTIME
+runtest strsep STRSEP
+echo
+cat config.h.post
+
+exit 0