When Compiling a simple code snippets: test.cpp:
#include <stdint.h> #include <stdio.h> int main() { intmax_t max = INTMAX_MAX; printf("%jd", max); return 0; } I get this error:
[huqiu@101 ~]$ g++ -o test.o test.cpp test.cpp: In function ‘int main()’: test.cpp:5: error: ‘INTMAX_MAX’ was not declared in this scope What I've done:
The compiler information:
[huqiu@101 ~]$ which g++ /usr/bin/g++ And the version:
[huqiu@101 ~]$ g++ -v Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) I've checked the include path:
[huqiu@101 ~]$ gcc -o test.o test.cpp -v ... COLLECT_GCC_OPTIONS='-o' 'test.o' '-v' '-mtune=generic' /usr/libexec/gcc/x86_64-redhat-linux/4.4.7/cc1plus -quiet -v -D_GNU_SOURCE test.cpp -quiet -dumpbase test.cpp -mtune=generic -auxbase test -version -o /tmp/ccjZyOY4.s ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.4.7/include-fixed" ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../x86_64-redhat-linux/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7 /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/x86_64-redhat-linux /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/backward /usr/local/include /usr/lib/gcc/x86_64-redhat-linux/4.4.7/include /usr/include End of search list. GNU C++ (GCC) version 4.4.7 20120313 (Red Hat 4.4.7-4) (x86_64-redhat-linux) compiled by GNU C version 4.4.7 20120313 (Red Hat 4.4.7-4), GMP version 4.3.1, MPFR version 2.4.1. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 9beacdb5724f8325308f81d8bbfbf884 test.cpp: In function ‘int main()’: test.cpp:5: error: ‘INTMAX_MAX’ was not declared in this scope And also the dependency:
[huqiu@101 ~]$ gcc -M test.cpp test.o: test.cpp /usr/include/stdint.h /usr/include/features.h \ /usr/include/sys/cdefs.h /usr/include/bits/wordsize.h \ /usr/include/gnu/stubs.h /usr/include/gnu/stubs-64.h \ /usr/include/bits/wchar.h /usr/include/stdio.h \ /usr/lib/gcc/x86_64-redhat-linux/4.4.7/include/stddef.h \ /usr/include/bits/types.h /usr/include/bits/typesizes.h \ /usr/include/libio.h /usr/include/_G_config.h /usr/include/wchar.h \ /usr/lib/gcc/x86_64-redhat-linux/4.4.7/include/stdarg.h \ /usr/include/bits/stdio_lim.h /usr/include/bits/sys_errlist.h I am sure that stdint.h is existent in /usr/include:
[huqiu@101 ~]$ cat /usr/include/stdint.h |grep INTMAX_MAX # define INTMAX_MAX (__INT64_C(9223372036854775807)) # define UINTMAX_MAX (__UINT64_C(18446744073709551615)) gcc -E
[huqiu@101 ~]$ gcc -E test.cpp | grep INTMAX_MAX intmax_t max = INTMAX_MAX; what should I do?
Everything looks right. I compiled the code successfully in other machine whose gcc version is lower, such as 4.2.x.
I think there may be something important I made them wrong.
Any help and tips will be great. Thanks in advance :)