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Re: How to print gcc include path using C?

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gazelle@shell.xmission.com (Kenny McCormack) writes:
>In article <n5r2J.115515$rl3.104681@fx45.iad>,
>Scott Lurndal <slp53@pacbell.net> wrote:
>>Thiago Adams <thiago.adams@gmail.com> writes:
>>>On Tuesday, September 21, 2021 at 11:08:41 AM UTC-3, anti...@math.uni.wroc.pl wrote:
>>>
>>>> In case you missed it: 7 in '/usr/lib/gcc/x86_64-linux-gnu/7/include' 
>>>> is version number, so will be different for different gcc versions. 
>>>> 'x86_64-linux-gnu' is platform name, on different platform like 
>>>> ARM it will be different. 
>>>
>>>How can I find out what is the default gcc? (sorry I am a windows
>>>developer,  generally this kind of information is on Windows registry  
>>>but I have no idea where to find this on Linux - This is a little of topic
>>>but it also interesting for C developers to know where the compiler gets
>>>its headers from)
>>
>>There is no "default" GCC.  Every linux distribution is free to ship
>>whatever version of GCC they desire.   RHEL6/7, for example, still
>>ship GCC4, while the latest Ubuntu may have GCC10 or GCC11; and
>>a LTS release of Ubuntu  may have an earlier version.
>
>I assumed the question was: How can I find out what the default version ON
>THIS MACHINE is.  "gcc -v" will tell you.
>
>The point is that there may be many versions of gcc installed on a given
>machine.  If your shell is more or less modern, the following keystroke
>combo should tell you what all versions are installed:

Not necessarily.  On our development systems:

$ module avail -t 2>&1 | grep ^gcc
gcc/10.1
gcc/10.2
gcc/10.3
gcc/11.1
gcc/11.2
gcc/4.4   (default)
gcc/4.8.5
gcc/4.9
gcc/4.9.3
gcc/4.9.4
gcc/5.1
gcc/5.2
gcc/5.3
gcc/5.4
gcc/5.5
gcc/6.3
gcc/6.4
gcc/6.5
gcc/7.1
gcc/7.2
gcc/7.3
gcc/7.4
gcc/7.5
gcc/8.1
gcc/8.2
gcc/8.3
gcc/8.4
gcc/8.5
gcc/9.1
gcc/9.2
gcc/9.3
gcc/9.4
gcc/latest

$ gcc --version
gcc (GCC) 9.3.0
Copyright (C) 2019 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.

$ module unload gcc/9.3
$ module load gcc/7.2
$ gcc --version
gcc (GCC) 7.2.0
Copyright (C) 2017 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.

$ 

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Thread

How to print gcc include path using C? Thiago Adams <thiago.adams@gmail.com> - 2021-09-20 11:48 -0700
  Re: How to print gcc include path using C? Bart <bc@freeuk.com> - 2021-09-20 20:45 +0100
    Re: How to print gcc include path using C? Thiago Adams <thiago.adams@gmail.com> - 2021-09-20 12:55 -0700
      Re: How to print gcc include path using C? scott@slp53.sl.home (Scott Lurndal) - 2021-09-20 21:53 +0000
        Re: How to print gcc include path using C? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-09-20 17:54 -0700
          Re: How to print gcc include path using C? Thiago Adams <thiago.adams@gmail.com> - 2021-09-21 05:07 -0700
            Re: How to print gcc include path using C? scott@slp53.sl.home (Scott Lurndal) - 2021-09-21 14:00 +0000
            Re: How to print gcc include path using C? Mark Bluemel <mark.bluemel@gmail.com> - 2021-09-21 07:07 -0700
            Re: How to print gcc include path using C? antispam@math.uni.wroc.pl - 2021-09-21 14:08 +0000
              Re: How to print gcc include path using C? Thiago Adams <thiago.adams@gmail.com> - 2021-09-21 12:01 -0700
                Re: How to print gcc include path using C? gazelle@shell.xmission.com (Kenny McCormack) - 2021-09-21 20:13 +0000
                Re: How to print gcc include path using C? scott@slp53.sl.home (Scott Lurndal) - 2021-09-21 20:17 +0000
                Re: How to print gcc include path using C? gazelle@shell.xmission.com (Kenny McCormack) - 2021-09-21 20:35 +0000
                Re: How to print gcc include path using C? scott@slp53.sl.home (Scott Lurndal) - 2021-09-21 21:30 +0000
                Re: How to print gcc include path using C? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-09-21 13:37 -0700
                Re: How to print gcc include path using C? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-09-21 14:07 -0700
                Re: How to print gcc include path using C? antispam@math.uni.wroc.pl - 2021-09-21 23:05 +0000

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