From 2622c8a1e2c1cabfd0f0c6f504325b9ae21672fa Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Mon, 26 Jun 2023 09:44:14 -0400
Subject: build: Check for mknod funcs, prog

calloc(), execve(), fdopen(), mkfifo(), open(), rename(), sleep(), and
mknod
---
(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index fea89da..77d9c6a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,10 +43,11 @@ test -d "${srcdir}/.git" || CFLAGS="${save_CFLAGS}"
 funcs_missing=false
 AC_CHECK_FUNCS(
 	[\
-		fclose feof ferror fopen fprintf fputs fread free fscanf fseek \
-		fwrite getgrgid getpwuid localtime lstat malloc memcmp memcpy \
-		memset mkdir printf puts readlink scandir snprintf sprintf \
-		stat strchr strcmp strcpy strftime strlen strncpy strtol unlink
+		calloc execve fclose fdopen feof ferror fopen fprintf fputs \
+		fread free fscanf fseek fwrite getgrgid getpwuid localtime \
+		lstat malloc memcmp memcpy memset mkdir mkfifo open printf \
+		puts readlink rename scandir sleep snprintf sprintf stat \
+		strchr strcmp strcpy strftime strlen strncpy strtol unlink
 	],
 	[],
 	[funcs_missing=true])
@@ -65,6 +66,33 @@ AC_CHECK_DECLS([[major(dev_t)], [minor(dev_t)]], [],
 PKG_PROG_PKG_CONFIG()
 PKG_CHECK_MODULES([ZLIB], [zlib])
 
+AC_ARG_WITH(
+	[mknod],
+	[AS_HELP_STRING([--with-mknod=PATH], [mknod utility])],
+	[
+		case "${withval}" in
+			'yes'|'')
+				AC_MSG_ERROR(
+					[--with-mknod requires an argument])
+				;;
+			'no')
+				AC_MSG_ERROR([mknod is required])
+				;;
+			*)
+				MKNOD="${withval}"
+				;;
+		esac
+	],
+	[
+		AC_PATH_PROG([MKNOD], [mknod])
+		if test -z "${MKNOD}"; then
+			AC_MSG_ERROR([mknod not found])
+		fi
+	]
+)
+AC_DEFINE_UNQUOTED([MKNOD], ["${MKNOD}"],
+	[Define to the path to the mknod utility.])
+
 AX_CFLAGS_WARN_ALL()  dnl Adds -Wall or equivalent
 AX_CHECK_COMPILE_FLAG([-Wpedantic], [AX_APPEND_FLAG([-Wpedantic])])
 AX_CHECK_COMPILE_FLAG([-Wextra],    [AX_APPEND_FLAG([-Wextra])])
--
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