How can I determine the platform and compiler version that I am using?

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I would like to determine the platform and compiler version that I am using.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 15 Jun 2018
Compilers called from the system command line do not display graphical splash screens advertising their version number. It is therefore not always obvious which version of a given C or Fortran compiler is installed.
Below are a number of examples that can be used to determine the compiler version on a specific machine. Each platform section lists version info commands for several common compilers. The fully indented sections are example output from the system command prompt.
You can find a list of compilers supported for use with MATLAB here:
Currently supported platforms:
gcc -v
gcc version 3.2.3
g95 -v
gcc version 4.0.3 (g95 0.90!) Jul 17 2006
g77 -v
gcc version 3.2.3
gcc-3.3 -v
gcc version 3.3 20030304 (Apple Computer, Inc. build 1809)
Platforms supported in previous versions of MATLAB:
DEC Alpha
cc -V | grep UNIX
DEC C V5.9-008 on Digital UNIX V4.0 (Rev. 1229)
Digital UNIX Compiler Driver 3.11
f77 -what
Compaq Fortran 77 Driver V5.3-11
Compaq Fortran 77 V5.3-189-449BB
what `which cc`
HP92453-01 A.11.01.00 HP C Compiler
what `which f90`
HP-UX f90 20000117 (163844) B3907DB/B3909DB B.11.01.11
HP F90 v2.4
what `which cc`
HP92453-01 A.10.32.30 HP C Compiler
what `which f90`
HP-UX f90 20000107 (183817) B3907DB/B3909DB B.10.20.19
HP F90 v2.4
IBM RS6000
lslpp -l ibmcxx.cmp COMMITTED IBM C and C++ Compilers
lslpp -cl xlfcmp COMMITTED I XL Fortran Compiler
cc -version
MIPSpro Compilers: Version
f77 -version
MIPSpro Compilers: Version 7.2.1
cc -V
cc: Sun C 5.5 Patch 112760-08 2004/02/20
f90 -V
f90: Sun Fortran 95 7.1 Patch 112762-09 2004/01/26
f77 -V
f90: Sun Fortran 95 7.1 Patch 112762-09 2004/01/26
Walter Roberson
Walter Roberson on 10 Mar 2020
GCC should be downwards compatible
Shudder, NO
If you require a software package to be downwards compatible, then you doom yourself to supporting every single bug that ever made it into released code, on the grounds that someone might have taken advantage of the bug and now your newer versions have to match the same buggy behavior forever for the sake of being downwards compatible.
No, GCC should not be downwards compatible; it just should not deliberately introduce incompatibilities without considering the existing installations.

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