Print AVX and AVX2 support when running CMake

[s-trinh]

Examples:

• cmake ../visp:

--     CPU optimization:            SSE2 SSE3 SSSE3

--   C/C++:
--     Built as dynamic libs?:      yes
--     C++ Compiler:                /usr/bin/c++  (ver 13.3.0)
--     C++ flags (Release):         -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -msse2 -msse3 -mssse3 -fPIC -O3 -DNDEBUG
--     C++ flags (Debug):           -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -msse2 -msse3 -mssse3 -fPIC -g
--     C Compiler:                  /usr/bin/cc
--     C flags (Release):           -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -msse2 -msse3 -mssse3 -fPIC -O3 -DNDEBUG
--     C flags (Debug):             -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -msse2 -msse3 -mssse3 -fPIC -g

• cmake ../visp -DENABLE_AVX=ON: (ENABLE_AVX flag needs to be passed at first configuration and when using ccmake the CPU optimization output will be wrong even if the -mavx flag will be passed at compile time)

--     CPU optimization:            SSE2 SSE3 SSSE3 SSE4_1 SSE4_2 AVX

--   C/C++:
--     Built as dynamic libs?:      yes
--     C++ Compiler:                /usr/bin/c++  (ver 13.3.0)
--     C++ flags (Release):         -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -O3 -DNDEBUG
--     C++ flags (Debug):           -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -g
--     C Compiler:                  /usr/bin/cc
--     C flags (Release):           -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -O3 -DNDEBUG
--     C flags (Debug):             -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -g

• cmake ../visp -DENABLE_AVX=ON -DCMAKE_CXX_FLAGS=-mavx2 (AVX2 code are not used in ViSP, simdlib 3rd party should use its own CMake config ; probably -DENABLE_AVX=ON is not needed)

--     CPU optimization:            SSE2 SSE3 SSSE3 SSE4_1 SSE4_2 AVX AVX2

--   C/C++:
--     Built as dynamic libs?:      yes
--     C++ Compiler:                /usr/bin/c++  (ver 13.3.0)
--     C++ flags (Release):         -mavx2  -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -O3 -DNDEBUG
--     C++ flags (Debug):           -mavx2  -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -g
--     C Compiler:                  /usr/bin/cc
--     C flags (Release):           -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -O3 -DNDEBUG
--     C flags (Debug):             -Wall -Wextra -fopenmp -std=c++17 -fvisibility=hidden -mavx -fPIC -g

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.52%. Comparing base (577f226) to head (0050c7e).
Report is 7 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1609   +/-   ##
=======================================
  Coverage   54.52%   54.52%           
=======================================
  Files         442      442           
  Lines       53480    53480           
=======================================
  Hits        29159    29159           
  Misses      24321    24321           

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[fspindle]

@s-trinh Thanks