diff -ru libsmbios-2.4.2.orig/src/libsmbios_c/cmos/cmos_linux.c libsmbios-2.4.2/src/libsmbios_c/cmos/cmos_linux.c
--- libsmbios-2.4.2.orig/src/libsmbios_c/cmos/cmos_linux.c	2018-06-06 17:40:24.000000000 +0300
+++ libsmbios-2.4.2/src/libsmbios_c/cmos/cmos_linux.c	2019-06-07 16:37:59.007546237 +0300
@@ -35,6 +35,13 @@
 // private
 #include "cmos_impl.h"
 
+#ifndef outb_p
+#define outb_p outb
+#endif
+#ifndef inb_p
+#define inb_p inb
+#endif
+
 static int linux_read_fn(const struct cmos_access_obj *this, u8 *byte, u32 indexPort, u32 dataPort, u32 offset)
 {
     outb_p (offset, indexPort);
diff -ru libsmbios-2.4.2.orig/src/libsmbios_c/common/common.c libsmbios-2.4.2/src/libsmbios_c/common/common.c
--- libsmbios-2.4.2.orig/src/libsmbios_c/common/common.c	2018-06-06 17:40:24.000000000 +0300
+++ libsmbios-2.4.2/src/libsmbios_c/common/common.c	2019-06-07 16:34:05.293776855 +0300
@@ -26,10 +26,15 @@
 
     if ((size_t)(bufsize - curstrsize - 1) < bufsize)
     {
+#ifdef __GLIBC__
         char *buf = strerror_r(errval, errbuf + curstrsize, bufsize - curstrsize - 1);
         // GNU breakage... :(
         if (buf != (errbuf + curstrsize))
             strlcat(errbuf, buf, bufsize);
+#else
+        /* XSI compliant strerror_r() */
+        strerror_r(errval, errbuf + curstrsize, bufsize - curstrsize - 1);
+#endif
     }
 }
 #endif
diff -ru libsmbios-2.4.2.orig/src/libsmbios_c/smi/smi_linux.c libsmbios-2.4.2/src/libsmbios_c/smi/smi_linux.c
--- libsmbios-2.4.2.orig/src/libsmbios_c/smi/smi_linux.c	2018-06-06 17:40:24.000000000 +0300
+++ libsmbios-2.4.2/src/libsmbios_c/smi/smi_linux.c	2019-06-07 16:34:05.293776855 +0300
@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <fcntl.h>
 #include <sys/file.h>  // flock
 #include <sys/ioctl.h> // ioctl
 #include <errno.h>