I am a new user of deal.II. I installed 8.5.0 on Mac OS Sierra a few months 
ago. I used .dmg and cmake .dmg files and set the environment variables as 
suggested on website. The program was running fine but at some time, maybe 
after update of Xcode, I have started getting the following error. I have 
performed a fresh installation on a different computer, but still this 
error does not go away. The error originates when I run the make in command 
window.

cmake .  runs without any problem. When I run make I get the following 
warnings and errors. Please help. 

Thanks,
Pawan

In file included from 
/Applications/deal.II-8.5-brew.app/Contents/Resources/examples/step-1/step-1.cc:22:

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/grid/tria.h:31:1:
 
**warning: *

*      unknown warning group '-Wunused-but-set-parameter', ignored*

*      [-Wunknown-warning-option]*

DEAL_II_DISABLE_EXTRA_DIAGNOSTICS

*^*

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/base/config.h:307:66:
 
note: *

      expanded from macro 'DEAL_II_DISABLE_EXTRA_DIAGNOSTICS'

_Pragma("GCC diagnostic ignored \"-Winfinite-recursion\"")       \

*                                                                 ^*

*<scratch space>:60:25: note: *expanded from here

 GCC diagnostic ignored "-Wunused-but-set-parameter"

*                        ^*

In file included from 
/Applications/deal.II-8.5-brew.app/Contents/Resources/examples/step-1/step-1.cc:22:

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/grid/tria.h:31:1:
 
**warning: *

*      unknown warning group '-Wunused-but-set-variable', ignored*

*      [-Wunknown-warning-option]*

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/base/config.h:311:66:
 
note: *

      expanded from macro 'DEAL_II_DISABLE_EXTRA_DIAGNOSTICS'

_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")  \

*                                                                 ^*

*<scratch space>:61:25: note: *expanded from here

 GCC diagnostic ignored "-Wunused-but-set-variable"

*                        ^*

In file included from 
/Applications/deal.II-8.5-brew.app/Contents/Resources/examples/step-1/step-1.cc:22:

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/grid/tria.h:31:1:
 
**warning: *

*      unknown warning group '-Wexpansion-to-defined', ignored*

*      [-Wunknown-warning-option]*

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/base/config.h:312:66:
 
note: *

      expanded from macro 'DEAL_II_DISABLE_EXTRA_DIAGNOSTICS'

_Pragma("GCC diagnostic ignored \"-Wunused-but-set-variable\"")  \

*                                                                 ^*

*<scratch space>:61:25: note: *expanded from here

 GCC diagnostic ignored "-Wexpansion-to-defined"

*                        ^*

In file included from 
/Applications/deal.II-8.5-brew.app/Contents/Resources/examples/step-1/step-1.cc:22:

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/grid/tria.h:31:1:
 
**warning: *

*      unknown warning group '-Wmisleading-indentation', ignored*

*      [-Wunknown-warning-option]*

*/Applications/deal.II-8.5-brew.app/Contents/Resources/include/deal.II/base/config.h:314:66:
 
note: *

      expanded from macro 'DEAL_II_DISABLE_EXTRA_DIAGNOSTICS'

_Pragma("GCC diagnostic ignored \"-Wignored-attributes\"")       \

*                                                                 ^*

*<scratch space>:61:25: note: *expanded from here

 GCC diagnostic ignored "-Wmisleading-indentation"

*                        ^*

4 warnings generated.

make[2]: *** No rule to make target 
`/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/System/Library/Frameworks/Accelerate.framework',
 
needed by `step-1'.  Stop.

make[1]: *** [CMakeFiles/step-1.dir/all] Error 2

make: *** [all] Error 2

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