Sizeof cleanup

[papadop]

This is a cleanup of the code which removes the need to check for type sizes in the configure step. It also factorizes some code and probably more readable.

I have not yet suppressed for configure.ac:

• SIZZEOF_VOID_P which is used in the testsuite, but we probably can generate a shell script which would avoid the grepping in matioConfig.h (so faster and cleaner).
• SIZEOF_SIZE_T because it is used in the fortran interface (yes I know it does not work, but I do not want to worsen the situation with this patch).

My short term goal is to simplify as much as possible matioConfig.h.in so that only defines used for matio remain. This also means that I will separate the defines only needed for snprintf.c in another file (probably my next task).

Tested on a linux 64 bits computer.

Let's see if the builders are happy...

[papadop]

Another nice feature of this patch is that some previously unchecked configuration will now generate a runtime error (I must admit that there is close to zero chance that these cases are met: sizeof pointer different from 4 or 8, or size of a type not covered by char, short, int, long and long long or their unsigned counterparts).

[papadop]

OK some small issues corrected (windows visual C not knowing inline and a typo which was generating a warning which I had not seen).

[papadop]

There is a problem with matioConfig.h.in ... Probably related to some .gitignore issue, because git tells me that the file is not tracked but was obtained when I checked out the repository.... I will correct that. By the way I have several files generated by autoconf/automake which appear in the status. Would it make sense to add them to .gitignore ? My autoconf/automake mastership is not what it was a few years ago, so I may be wrong....

bali-> git status
On branch SIZEOF_cleanup
Changes not staged for commit:
  (use "git add/rm <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

    modified:   config/config.guess
    modified:   config/config.sub
    deleted:    config/depcomp
    modified:   config/install-sh
    modified:   config/missing

Untracked files:
  (use "git add <file>..." to include in what will be committed)

    config/compile
    src/matioConfig.h.in

no changes added to commit (use "git add" and/or "git commit -a")

[coveralls]

Coverage decreased (-0.02%) to 81.174% when pulling 3b52ebe05c824b06c5d305ec345a502e9f2ef49d on papadop:SIZEOF_cleanup into 85141e7e7654c10cde54a3dabdcb7e18d3d02536 on tbeu:master.

[tbeu]

That is what I see on openSUSE Leap 42.3:

$ git status
On branch master
Your branch is up-to-date with 'origin/master'.
Untracked files:
  (use "git add <file>..." to include in what will be committed)

        matio.pc
        src/matio_pubconf.h
        src/stamp-h2
        test/atconfig

nothing added to commit but untracked files present (use "git add" to track)

[tbeu]

Closing now, since there is no more progress to expect.