diff -up R-3.0.1/src/library/tools/R/install.R.armfix R-3.0.1/src/library/tools/R/install.R
--- R-3.0.1/src/library/tools/R/install.R.armfix	2013-08-12 13:57:17.956790673 -0400
+++ R-3.0.1/src/library/tools/R/install.R	2013-08-12 13:59:51.230800752 -0400
@@ -108,7 +108,11 @@
     SHLIB_EXT <- if (WINDOWS) ".dll" else {
         ## can we do better?
         mconf <- file.path(R.home(), paste0("etc", rarch), "Makeconf")
-        sub(".*= ", "", grep("^SHLIB_EXT", readLines(mconf), value = TRUE))
+        if (substr( Sys.info()["machine"], 1, 3) == "arm") { 	# arm has broken regexps in libc
+            sub(".*= ", "", grep("^SHLIB_EXT", readLines(mconf), value = TRUE), perl = TRUE)
+        } else {
+            sub(".*= ", "", grep("^SHLIB_EXT", readLines(mconf), value = TRUE))
+        }
     }
 
     options(warn = 1)
@@ -1627,8 +1631,13 @@
         mconf <- readLines(file.path(R.home(),
                                      paste0("etc", Sys.getenv("R_ARCH")),
                                      "Makeconf"))
-        SHLIB_EXT <- sub(".*= ", "", grep("^SHLIB_EXT", mconf, value = TRUE))
-        SHLIB_LIBADD <- sub(".*= ", "", grep("^SHLIB_LIBADD", mconf, value = TRUE))
+        if (substr( Sys.info()["machine"], 1, 3) == "arm") { 	# arm has broken regexps in libc
+            SHLIB_EXT <- sub(".*= ", "", grep("^SHLIB_EXT", mconf, value = TRUE), perl = TRUE)
+            SHLIB_LIBADD <- sub(".*= ", "", grep("^SHLIB_LIBADD", mconf, value = TRUE), perl = TRUE)
+        } else {
+            SHLIB_EXT <- sub(".*= ", "", grep("^SHLIB_EXT", mconf, value = TRUE))
+            SHLIB_LIBADD <- sub(".*= ", "", grep("^SHLIB_LIBADD", mconf, value = TRUE))
+        }
         MAKE <- Sys.getenv("MAKE")
         rarch <- Sys.getenv("R_ARCH")
     } else {