From 608640b87dc47233940664632e3ab8f13972be2b Mon Sep 17 00:00:00 2001
From: Jon Turney <jon.turney@dronecode.org.uk>
Date: Thu, 17 Oct 2019 19:11:52 +0100
Subject: Fix Win32 build since c4ed2e06 "Add some unit testing utilities"

Provide Win32 replacements for realpath() and err.h
---
 configure.ac                 |  5 ++++-
 src/util/realpath.c          | 29 +++++++++++++++++++++++++++++
 src/util/replace.h           | 16 ++++++++++++++++
 test/utils/font-test-utils.c |  3 +++
 test/utils/lsfontdir.c       |  3 +++
 5 files changed, 55 insertions(+), 1 deletion(-)
 create mode 100644 src/util/realpath.c

diff --git a/configure.ac b/configure.ac
index f507c28..e497325 100644
--- a/configure.ac
+++ b/configure.ac
@@ -54,7 +54,10 @@ AC_CHECK_HEADERS([endian.h poll.h sys/poll.h])
 AC_CHECK_FUNCS([poll readlink])
 AC_SEARCH_LIBS([strlcat], [bsd])
 AC_CONFIG_LIBOBJ_DIR([src/util])
-AC_REPLACE_FUNCS([reallocarray strlcat strlcpy])
+AC_REPLACE_FUNCS([reallocarray realpath strlcat strlcpy])
+
+# Check for BSDish err.h
+AC_CHECK_HEADERS([err.h])
 
 # If the first PKG_CHECK_MODULES appears inside a conditional, pkg-config
 # must first be located explicitly.
diff --git a/src/util/realpath.c b/src/util/realpath.c
new file mode 100644
index 0000000..abeebaa
--- /dev/null
+++ b/src/util/realpath.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright © 2019 Jon Turney.
+ *
+ * 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 TODD C. MILLER DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "src/util/replace.h"
+
+#ifdef WIN32
+char *
+realpath(const char *path, char *resolved_path)
+{
+  return _fullpath(resolved_path, path, _MAX_PATH);
+}
+#endif
diff --git a/src/util/replace.h b/src/util/replace.h
index 1a24820..53a81a2 100644
--- a/src/util/replace.h
+++ b/src/util/replace.h
@@ -57,5 +57,21 @@ extern _X_HIDDEN size_t
 strlcat(char *dst, const char *src, size_t siz);
 #endif
 
+#ifndef HAVE_ERR_H
+#define err(eval, ...) do { \
+  fprintf(stderr, __VA_ARGS__); \
+  fprintf(stderr, "\n"); \
+  exit(eval); \
+  } while (0)
+#define vwarn(...) do { \
+  fprintf(stderr, __VA_ARGS__); \
+  fprintf(stderr, "\n"); \
+  } while (0)
+#endif
+
+#ifndef HAVE_REALPATH
+extern _X_HIDDEN char *
+realpath(const char *path, char *resolved_path);
+#endif
 
 #endif /* XFONT_REPLACE_H */
diff --git a/test/utils/font-test-utils.c b/test/utils/font-test-utils.c
index ff05061..da32e08 100644
--- a/test/utils/font-test-utils.c
+++ b/test/utils/font-test-utils.c
@@ -58,7 +58,10 @@ SOFTWARE.
 #include <stdlib.h>
 #include <limits.h>
 #include <assert.h>
+#ifdef HAVE_ERR_H
 #include <err.h>
+#endif
+#include "src/util/replace.h"
 #include <X11/X.h>
 
 static unsigned long server_generation;
diff --git a/test/utils/lsfontdir.c b/test/utils/lsfontdir.c
index 1f46599..23826cf 100644
--- a/test/utils/lsfontdir.c
+++ b/test/utils/lsfontdir.c
@@ -30,7 +30,10 @@
 #include "font-test-utils.h"
 #include <stdio.h>
 #include <assert.h>
+#ifdef HAVE_ERR_H
 #include <err.h>
+#endif
+#include "src/util/replace.h"
 
 int
 main(int argc, char **argv)
-- 
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