Re: can be compiled but not cpp'ed (Was: header files (autoconf 2.57; automake 1.7.6))

[Akim Demaille]

Public matters on public places.

 > Thank you for your quick reply. But the warning I received from
 > configure is different from the "present cannot be compiled"
 > warning. I received the "accepted by the compiler, rejected by
 > the preprocessor" warning message:

 > checking stdio.h usability... yes
 > checking stdio.h presence... no
 > configure: WARNING: stdio.h: accepted by the compiler, rejected by the
 > preprocessor!
 > configure: WARNING: stdio.h: proceeding with the preprocessor's result
 > configure: WARNING:     ## ------------------------------------ ##
 > configure: WARNING:     ## Report this to address@hidden ##
 > configure: WARNING:     ## ------------------------------------ ##
 > checking for stdio.h... no

 > which is different from the "present but cannot be compiled warning
 > error" in your example:

 > configure: WARNING: pi.h: present but cannot be compiled
 > configure: WARNING: pi.h: check for missing prerequisite headers?
 > configure: WARNING: pi.h: proceeding with the preprocessor's result
 > configure: WARNING:     ## ------------------------------------ ##
 > configure: WARNING:     ## Report this to address@hidden ##
 > configure: WARNING:     ## ------------------------------------ ##

Definitely.  That's odd and not expected :)


 > The "accepted by the compiler, rejected by the preprocessor"
 > message occurs even for the stdio.h #include file, so I would think
 > that that is not caused by missing prerequisite headers. Do you
 > have any other suggestions as to where the "accepted by the
 > compiler, rejected by the preprocessor" error is coming from?

 > In case it'll help you, I have included the relevant portion of the
 > config.log file below.

 > Thank you very much for your help and sorry to bother you again.

 > --Michiel.




 > configure:4690: checking stdio.h usability
 > configure:4703: gcc -c -g -O2  conftest.c >&5
 > configure:4706: $? = 0
 > configure:4709: test -s conftest.o
 > configure:4712: $? = 0
 > configure:4722: result: yes
 > configure:4726: checking stdio.h presence
 > configure:4737:   conftest.c
 > /bin: not found
 > /bin: not found
 >> #line 4728 "configure"
 >> /* confdefs.h.  */
 >> 
 >> #define PACKAGE_NAME "cluster"
 >> #define PACKAGE_TARNAME "cluster"
 >> #define PACKAGE_VERSION "1.24"
 >> #define PACKAGE_STRING "cluster 1.24"
 >> #define PACKAGE_BUGREPORT ""
 >> #define PACKAGE "cluster"
 >> #define VERSION "1.24"
 >> #define HAVE_SYS_TYPES_H 1
 >> #define HAVE_SYS_STAT_H 1
 >> #define HAVE_STDLIB_H 1
 >> #define HAVE_STRING_H 1
 >> #define HAVE_MEMORY_H 1
 >> #define HAVE_STRINGS_H 1
 >> #define HAVE_INTTYPES_H 1
 >> #define HAVE_STDINT_H 1
 >> #define HAVE_UNISTD_H 1
 >> /* end confdefs.h.  */
 >> #include <stdio.h>
 > configure:4762: result: no
 > configure:4768: WARNING: stdio.h: accepted by the compiler, rejected by the 
 > prep
 > rocessor!
 > configure:4770: WARNING: stdio.h: proceeding with the preprocessor's result
 > configure:4798: checking for stdio.h
 > configure:4805: result: no


Err... It looks like cpp is not defined.  Could you run it again, with
-C, and send config.cache?  Thanks!