scons: Reading SConscript files ... Delete("nsis-30-Sep-2015.cvs") Delete(".instdist") Delete(".test") Using GNU tools configuration Checking for linker flag $MAP_FLAG... yes Checking for linker flag -s... yes Checking for linker flag $MAP_FLAG... yes Checking for linker flag -s... yes Checking for memcpy requirement... no Checking for memset requirement... no Checking for linker flag -pthread... yes Checking for __BIG_ENDIAN__... no gcc --version gcc (GCC) 5.1.1 20150618 (Red Hat 5.1.1-4) Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. g++ --version g++ (GCC) 5.1.1 20150618 (Red Hat 5.1.1-4) Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Checking for C library gdi32... no Checking for C library user32... no Checking for C library pthread... yes Checking for C library iconv... no Checking for C library shlwapi... no Checking for C library z... no zlib (posix) is missing!