diff -u -r ../cmake-3.10.1/Source/cmExecProgramCommand.cxx ./Source/cmExecProgramCommand.cxx
--- ../cmake-3.10.1/Source/cmExecProgramCommand.cxx	2017-12-13 14:25:23.000000000 +0100
+++ ./Source/cmExecProgramCommand.cxx	2017-12-15 12:18:37.696103242 +0100
@@ -205,7 +205,7 @@
   }
   fflush(stdout);
   fflush(stderr);
-  const char* cmd[] = { "/bin/sh", "-c", command, nullptr };
+  const char* cmd[] = { "@TERMUX_PREFIX@/bin/sh", "-c", command, nullptr };
   cmsysProcess_SetCommand(cp, cmd);
 #endif