configure:4451: checking how to run the C preprocessor configure:4472: gcc -E -D_FORTIFY_SOURCE=2 conftest.c >/dev/null 2>conftest.out In file included from /usr/include/assert.h:36:0, from configure:4467: /usr/include/features.h:330:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] # warning _FORTIFY_SOURCE requires compiling with optimization (-O) ^ configure: failed program was: #line 4466 "configure" #include "confdefs.h" #include Syntax Error configure:4489: gcc -E -traditional-cpp -D_FORTIFY_SOURCE=2 conftest.c >/dev/null 2>conftest.out In file included from /usr/include/assert.h:37:0, from configure:4485: /usr/include/features.h:330:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp] # warning _FORTIFY_SOURCE requires compiling with optimization (-O) ^ In file included from /usr/include/features.h:376:0, from /usr/include/assert.h:37, from configure:4485: /usr/include/sys/cdefs.h:31:3: error: #error "You need a ISO C conforming compiler to use the glibc headers" # error "You need a ISO C conforming compiler to use the glibc headers" ^ configure: failed program was: #line 4483 "configure" #include "confdefs.h" #include Syntax Error configure:4506: gcc -nologo -E -D_FORTIFY_SOURCE=2 conftest.c >/dev/null 2>conftest.out gcc: error: unrecognized command line option '-nologo' configure: failed program was: #line 4500 "configure" #include "confdefs.h" #include Syntax Error