diff --git a/src/system/libroot/posix/glibc/include/allocalim.h b/src/system/libroot/posix/glibc/include/allocalim.h
index 2491129a7d..f9bc036bc3 100644
--- a/src/system/libroot/posix/glibc/include/allocalim.h
+++ b/src/system/libroot/posix/glibc/include/allocalim.h
@@ -1,4 +1,7 @@
-extern inline int __libc_use_alloca (size_t size)
+#ifndef _EXTERN_INLINE
+#define _EXTERN_INLINE extern inline
+#endif
+_EXTERN_INLINE int __libc_use_alloca (size_t size)
 {
   return size <= __MAX_ALLOCA_CUTOFF;
 }
diff --git a/src/system/libroot/posix/glibc/stdlib/Jamfile b/src/system/libroot/posix/glibc/stdlib/Jamfile
index a9ba5f2c9d..27a47c9fb1 100644
--- a/src/system/libroot/posix/glibc/stdlib/Jamfile
+++ b/src/system/libroot/posix/glibc/stdlib/Jamfile
@@ -15,6 +15,7 @@ MergeObject posix_gnu_stdlib.o :
 	fpioconst.c
 	jrand48.c
 	jrand48_r.c
+	inlines.c
 	lcong48.c
 	lcong48_r.c
 	lrand48.c
diff --git a/src/system/libroot/posix/glibc/stdlib/inlines.c b/src/system/libroot/posix/glibc/stdlib/inlines.c
new file mode 100644
index 0000000000..a7a9e13ce3
--- /dev/null
+++ b/src/system/libroot/posix/glibc/stdlib/inlines.c
@@ -0,0 +1,4 @@
+#define _FORCE_INLINES
+#define _EXTERN_INLINE /* empty */
+#include "gmp.h"
+#include "include/alloca.h"