diff -ur openmp-5.0.1.src.orig/runtime/src/kmp_affinity.h openmp-5.0.1.src/runtime/src/kmp_affinity.h
--- openmp-5.0.1.src.orig/runtime/src/kmp_affinity.h	2017-07-18 08:30:03.000000000 -0000
+++ openmp-5.0.1.src/runtime/src/kmp_affinity.h	2018-01-31 10:06:34.391880020 -0000
@@ -195,6 +195,19 @@
 #error Wrong code for getaffinity system call.
 #endif /* __NR_sched_getaffinity */
 #elif KMP_ARCH_X86_64
+#if __ILP32__
+#define __X32_SYSCALL_BIT 0x40000000
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  (__X32_SYSCALL_BIT + 203)
+#elif __NR_sched_setaffinity != (__X32_SYSCALL_BIT + 203)
+#error Wrong code for setaffinity system call.
+#endif /* __NR_sched_setaffinity */
+#ifndef __NR_sched_getaffinity
+#define __NR_sched_getaffinity  (__X32_SYSCALL_BIT + 204)
+#elif __NR_sched_getaffinity != (__X32_SYSCALL_BIT + 204)
+#error Wrong code for getaffinity system call.
+#endif /* __NR_sched_getaffinity */
+#else
 #ifndef __NR_sched_setaffinity
 #define __NR_sched_setaffinity 203
 #elif __NR_sched_setaffinity != 203
@@ -205,6 +218,7 @@
 #elif __NR_sched_getaffinity != 204
 #error Wrong code for getaffinity system call.
 #endif /* __NR_sched_getaffinity */
+#endif
 #elif KMP_ARCH_PPC64
 #ifndef __NR_sched_setaffinity
 #define __NR_sched_setaffinity 222
diff -ur v2/openmp-5.0.1.src/runtime/cmake/LibompMicroTests.cmake v3/openmp-5.0.1.src/runtime/cmake/LibompMicroTests.cmake
--- v2/openmp-5.0.1.src/runtime/cmake/LibompMicroTests.cmake	2016-12-08 10:22:24.000000000 +0100
+++ v3/openmp-5.0.1.src/runtime/cmake/LibompMicroTests.cmake	2018-02-01 12:31:04.197012825 +0100
@@ -198,6 +198,7 @@
     elseif(${INTEL64})
       libomp_append(libomp_expected_library_deps libc.so.6)
       libomp_append(libomp_expected_library_deps ld-linux-x86-64.so.2)
+      libomp_append(libomp_expected_library_deps ld-linux-x32.so.2)
     elseif(${ARM})
       libomp_append(libomp_expected_library_deps libc.so.6)
       libomp_append(libomp_expected_library_deps libffi.so.6)
diff -ur v2/openmp-5.0.1.src/runtime/src/kmp_os.h v3/openmp-5.0.1.src/runtime/src/kmp_os.h
--- v2/openmp-5.0.1.src/runtime/src/kmp_os.h	2017-07-18 22:31:19.000000000 +0200
+++ v3/openmp-5.0.1.src/runtime/src/kmp_os.h	2018-02-01 13:09:17.486431486 +0100
@@ -155,7 +155,7 @@
 #error "Can't determine size_t printf format specifier."
 #endif
 
-#if KMP_ARCH_X86
+#if KMP_ARCH_X86 || ( KMP_ARCH_X86_64 && __ILP32__ )
 #define KMP_SIZE_T_MAX (0xFFFFFFFF)
 #else
 #define KMP_SIZE_T_MAX (0xFFFFFFFFFFFFFFFF)