I tried uninstalling LLVM and building it again, but it fails again for 
cysignals. 
But the problem now seems that it still sets -I and -L flags with 
non-existent LLVM directories.
On Tuesday, October 27, 2020 at 5:10:58 PM UTC+1 Matthias Koeppe wrote:

> From config.log:
>
> configure:5906: gcc -v >&5
> Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr 
> --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
> Apple clang version 12.0.0 (clang-1200.0.32.21)
> Target: x86_64-apple-darwin19.6.0
> Thread model: posix
> InstalledDir: 
> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
> configure:5917: $? = 0
> ...
>
> configure:6029: gcc -o conftest  -I/usr/local/opt/llvm/include 
> -L/usr/local/opt/llvm/lib conftest.c  >&5
>
>
> This looks like an unsupported configuration - injecting these -L and -I 
> flags via environment variables, but continuing to use Apple's gcc.
> If you are trying to compile with homebrew's llvm, you should probably 
> configure by setting CC and CXX as well. But this is also untested - I have 
> created https://trac.sagemath.org/ticket/30835#ticket for testing such a 
> configuration.
>
>
> On Tuesday, October 27, 2020 at 3:46:10 AM UTC-7, Dima Pasechnik wrote:
>
>> I'd have tried removing llvm and trying again. Perhaps this is a conflict 
>> between Homebrew packages.
>>
>> On Tue, Oct 27, 2020 at 8:42 AM modp...@gmail.com <modp...@gmail.com> 
>> wrote:
>>
> Please find config.log and cysignals-1.10.2.log attached. I already run 
>>> "source .homebrew-build-env" before configuring.
>>> And yes I also have llvm installed through Homebrew.
>>>
>>> On Monday, October 26, 2020 at 3:23:38 PM UTC+1 dim...@gmail.com wrote:
>>>
>>>> also note that you apparently have something in 
>>>> -L/usr/local/opt/llvm/lib (installed from Homebrew ?) which might lead 
>>>> to surprises. 
>>>> Do you have some LDFLAGS set? 
>>>> It would help if you also post logs/pkgs/cysignals-1.10.2.log 
>>>>
>>>> On Mon, Oct 26, 2020 at 2:15 PM Dima Pasechnik <dim...@gmail.com> 
>>>> wrote: 
>>>> > 
>>>> > also, if you have Homebrew, you should run 
>>>> > 
>>>> > source .homebrew-build-env 
>>>> > 
>>>> > before 
>>>> > 
>>>> > ./configure 
>>>> > 
>>>> > On Mon, Oct 26, 2020 at 1:50 PM Dima Pasechnik <dim...@gmail.com> 
>>>> wrote: 
>>>> >> 
>>>> >> please post the top-level config.log here 
>>>> >> 
>>>> >> On Mon, 26 Oct 2020, 13:45 modp...@gmail.com, <modp...@gmail.com> 
>>>> wrote: 
>>>> >>> 
>>>> >>> 
>>>> >>> I'm building Sage 9.2 from source on macOS Catalina 10.15.7, 
>>>> however, it fails 
>>>> >>> when trying to install cysignals. More precisely, it throws the 
>>>> following error: 
>>>> >>> 
>>>> >>> gcc -bundle -undefined dynamic_lookup -isysroot 
>>>> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk
>>>>  
>>>> -L/Users/myUser/app/sage-9.2/local/lib 
>>>> -Wl,-rpath,/Users/myUser/app/sage-9.2/local/lib -L/usr/local/opt/llvm/lib 
>>>> -I/usr/local/opt/llvm/include -Wp,-U_FORTIFY_SOURCE 
>>>> build/temp.macosx-10.15-x86_64-3.8/build/src/cysignals/signals.o 
>>>> -L/usr/local/lib -L/usr/local/opt/openssl@1.1/lib 
>>>> -L/usr/local/opt/sqlite/lib -o build/lib.macosx-10.15-x86_64-3.8/cysignals/
>>>> signals.cpython-38-darwin.so -lpari -pthread 
>>>> >>> ld: illegal thread local variable reference to regular symbol 
>>>> _PARI_SIGINT_block for architecture x86_64 
>>>> >>> clang: error: linker command failed with exit code 1 (use -v to see 
>>>> invocation) 
>>>> >>> error: command 'gcc' failed with exit status 1 
>>>> >>> Building wheel for cysignals (setup.py): finished with status 
>>>> 'error' 
>>>> >>> ERROR: Failed building wheel for cysignals 
>>>> >>> 
>>>> >>> This is my compiler version: 
>>>> >>> 
>>>> >>> Configured with: 
>>>> --prefix=/Applications/Xcode.app/Contents/Developer/usr 
>>>> --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
>>>>  
>>>>
>>>> >>> Apple clang version 12.0.0 (clang-1200.0.32.21) 
>>>> >>> Target: x86_64-apple-darwin19.6.0 
>>>> >>> Thread model: posix 
>>>> >>> InstalledDir: 
>>>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
>>>>  
>>>>
>>>> >>> 
>>>> >>> Any idea what the problem might be, and how to solve it? 
>>>> >>> 
>>>> >>> -- 
>>>> >>> You received this message because you are subscribed to the Google 
>>>> Groups "sage-devel" group. 
>>>> >>> To unsubscribe from this group and stop receiving emails from it, 
>>>> send an email to sage-devel+...@googlegroups.com. 
>>>> >>> To view this discussion on the web visit 
>>>> https://groups.google.com/d/msgid/sage-devel/38ff74b7-a4bf-4118-8519-9f57736ba532n%40googlegroups.com.
>>>>  
>>>>
>>>>
>>> -- 
>>> You received this message because you are subscribed to the Google 
>>> Groups "sage-devel" group.
>>>
>> To unsubscribe from this group and stop receiving emails from it, send an 
>>> email to sage-...@googlegroups.com.
>>
>>
>>> To view this discussion on the web visit 
>>> https://groups.google.com/d/msgid/sage-devel/c76466bf-9141-4761-83ef-e97b7d28d691n%40googlegroups.com
>>>  
>>> <https://groups.google.com/d/msgid/sage-devel/c76466bf-9141-4761-83ef-e97b7d28d691n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>> .
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
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To unsubscribe from this group and stop receiving emails from it, send an email 
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Found local metadata for cysignals-1.10.2
Using cached file /Users/etairi/app/sage-9.2/upstream/cysignals-1.10.2.tar.gz
cysignals-1.10.2
====================================================
Setting up build directory for cysignals-1.10.2
Finished extraction
No patch files found in ../patches
****************************************************
Host system:
Darwin tuwien 19.6.0 Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 
2020; root:xnu-6153.141.2~1/RELEASE_X86_64 x86_64
****************************************************
C compiler: gcc
C compiler version:
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr 
--with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 12.0.0 (clang-1200.0.32.21)
Target: x86_64-apple-darwin19.6.0
Thread model: posix
InstalledDir: 
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
****************************************************
Package 'cysignals' is currently not installed
No legacy uninstaller found for 'cysignals'; nothing to do
Configuring cysignals-1.10.2
configure: WARNING: unrecognized options: --disable-maintainer-mode, 
--disable-dependency-tracking
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether we are using the GNU C++ compiler... yes
checking whether gcc accepts -g... yes
checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking execinfo.h usability... yes
checking execinfo.h presence... yes
checking for execinfo.h... yes
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking sys/prctl.h usability... no
checking sys/prctl.h presence... no
checking for sys/prctl.h... no
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking sys/wait.h usability... yes
checking sys/wait.h presence... yes
checking for sys/wait.h... yes
checking windows.h usability... no
checking windows.h presence... no
checking for windows.h... no
checking for fork... yes
checking for kill... yes
checking for sigprocmask... yes
checking for sigaltstack... yes
checking for backtrace... yes
checking for library containing pari_init... -lpari
checking whether PARI_SIGINT_block is declared... yes
checking for emms instruction... yes
checking whether setjmp() saves the signal mask... yes
checking for GNU libc... no
checking for _Atomic in C code... yes
checking for _Atomic in C++ code... yes
checking for std::atomic... yes
configure: creating ./config.status
config.status: creating src/cysignals/signals.pxd
config.status: creating src/config.h
config.status: creating src/cysignals/cysignals_config.h
configure: WARNING: unrecognized options: --disable-maintainer-mode, 
--disable-dependency-tracking
Installing cysignals-1.10.2
Ignoring indexes: https://pypi.org/simple
Created temporary directory: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-ephem-wheel-cache-4_vvwh0m
Created temporary directory: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-tracker-q6hsrr5t
Initialized build tracking at 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-tracker-q6hsrr5t
Created build tracker: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-tracker-q6hsrr5t
Entered build tracker: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-tracker-q6hsrr5t
Created temporary directory: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-wheel-si1ny2eo
Processing 
/Users/etairi/app/sage-9.2/local/var/tmp/sage/build/cysignals-1.10.2/src
  Created temporary directory: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-build-5yc6io_b
  Added 
file:///Users/etairi/app/sage-9.2/local/var/tmp/sage/build/cysignals-1.10.2/src 
to build tracker 
'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-tracker-q6hsrr5t'
    Running setup.py 
(path:/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-build-5yc6io_b/setup.py)
 egg_info for package from 
file:///Users/etairi/app/sage-9.2/local/var/tmp/sage/build/cysignals-1.10.2/src
    Created temporary directory: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf
    Running command python setup.py egg_info
    running egg_info
    creating 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info
    writing 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info/PKG-INFO
    writing dependency_links to 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info/dependency_links.txt
    writing requirements to 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info/requires.txt
    writing top-level names to 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info/top_level.txt
    writing manifest file 
'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info/SOURCES.txt'
    reading manifest file 
'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info/SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    no previously-included directories found matching 'build'
    no previously-included directories found matching 'dist'
    no previously-included directories found matching 'tmp'
    no previously-included directories found matching '.*'
    no previously-included directories found matching 'example/.*'
    writing manifest file 
'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-pip-egg-info-vjhsd4tf/cysignals.egg-info/SOURCES.txt'
  Source in 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-build-5yc6io_b 
has version 1.10.2, which satisfies requirement cysignals==1.10.2 from 
file:///Users/etairi/app/sage-9.2/local/var/tmp/sage/build/cysignals-1.10.2/src
  Removed cysignals==1.10.2 from 
file:///Users/etairi/app/sage-9.2/local/var/tmp/sage/build/cysignals-1.10.2/src 
from build tracker 
'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-tracker-q6hsrr5t'
Building wheels for collected packages: cysignals
  Created temporary directory: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-wheel-7njmeohe
  Building wheel for cysignals (setup.py): started
  Destination directory: 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-wheel-7njmeohe
  Running command /Users/etairi/app/sage-9.2/local/bin/python3 -u -c 'import 
sys, setuptools, tokenize; sys.argv[0] = 
'"'"'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-build-5yc6io_b/setup.py'"'"';
 
__file__='"'"'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-build-5yc6io_b/setup.py'"'"';f=getattr(tokenize,
 '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', 
'"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' 
bdist_wheel -d 
/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-wheel-7njmeohe
  running bdist_wheel
  running build
  Compiling src/cysignals/signals.pyx because it changed.
  Compiling src/cysignals/pysignals.pyx because it changed.
  Compiling src/cysignals/alarm.pyx because it changed.
  Compiling src/cysignals/pselect.pyx because it changed.
  Compiling src/cysignals/tests.pyx because it changed.
  [1/5] Cythonizing src/cysignals/alarm.pyx
  [2/5] Cythonizing src/cysignals/pselect.pyx
  [3/5] Cythonizing src/cysignals/pysignals.pyx
  [4/5] Cythonizing src/cysignals/signals.pyx
  [5/5] Cythonizing src/cysignals/tests.pyx
  running build_py
  creating build/lib.macosx-10.15-x86_64-3.8
  creating build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/__init__.py -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/signals.pxi -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/memory.pxi -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/memory.pxd -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/pysignals.pxd -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/signals.pxd -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/cysignals_config.h -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/macros.h -> build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/struct_signals.h -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  copying src/cysignals/pxi_warning.h -> 
build/lib.macosx-10.15-x86_64-3.8/cysignals
  running build_ext
  building 'cysignals.signals' extension
  creating build/temp.macosx-10.15-x86_64-3.8
  creating build/temp.macosx-10.15-x86_64-3.8/build
  creating build/temp.macosx-10.15-x86_64-3.8/build/src
  creating build/temp.macosx-10.15-x86_64-3.8/build/src/cysignals
  gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic 
-DNDEBUG -g -fwrapv -O3 -Wall -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk
 
-I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/include
 
-I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers
 -I/usr/local/opt/llvm/include -Wp,-U_FORTIFY_SOURCE 
-DCYTHON_CLINE_IN_TRACEBACK=0 -U_FORTIFY_SOURCE -Isrc/cysignals -Isrc 
-I/usr/local/include -I/usr/local/opt/openssl@1.1/include 
-I/usr/local/opt/sqlite/include -I/Users/etairi/app/sage-9.2/local/include 
-I/usr/local/Cellar/python@3.8/3.8.6/Frameworks/Python.framework/Versions/3.8/include/python3.8
 -c build/src/cysignals/signals.c -o 
build/temp.macosx-10.15-x86_64-3.8/build/src/cysignals/signals.o -pthread
  build/src/cysignals/signals.c:6449:5: warning: 'tp_print' is deprecated 
[-Wdeprecated-declarations]
      0,
      ^
  
/usr/local/Cellar/python@3.8/3.8.6/Frameworks/Python.framework/Versions/3.8/include/python3.8/cpython/object.h:260:5:
 note: 'tp_print' has been explicitly marked deprecated here
      Py_DEPRECATED(3.8) int (*tp_print)(PyObject *, FILE *, int);
      ^
  
/usr/local/Cellar/python@3.8/3.8.6/Frameworks/Python.framework/Versions/3.8/include/python3.8/pyport.h:515:54:
 note: expanded from macro 'Py_DEPRECATED'
  #define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__))
                                                       ^
  In file included from build/src/cysignals/signals.c:1570:
  build/src/cysignals/implementation.c:516:13: warning: unused function 
'print_enhanced_backtrace' [-Wunused-function]
  static void print_enhanced_backtrace(void)
              ^
  2 warnings generated.
  gcc -bundle -undefined dynamic_lookup -isysroot 
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk
 -L/Users/etairi/app/sage-9.2/local/lib 
-Wl,-rpath,/Users/etairi/app/sage-9.2/local/lib -L/usr/local/opt/llvm/lib 
-I/usr/local/opt/llvm/include -Wp,-U_FORTIFY_SOURCE 
build/temp.macosx-10.15-x86_64-3.8/build/src/cysignals/signals.o 
-L/usr/local/lib -L/usr/local/opt/openssl@1.1/lib -L/usr/local/opt/sqlite/lib 
-o build/lib.macosx-10.15-x86_64-3.8/cysignals/signals.cpython-38-darwin.so 
-lpari -pthread
  ld: warning: directory not found for option '-L/usr/local/opt/llvm/lib'
  ld: illegal thread local variable reference to regular symbol 
_PARI_SIGINT_block for architecture x86_64
  clang: error: linker command failed with exit code 1 (use -v to see 
invocation)
  error: command 'gcc' failed with exit status 1
  Building wheel for cysignals (setup.py): finished with status 'error'
  ERROR: Failed building wheel for cysignals
  Running setup.py clean for cysignals
  Running command /Users/etairi/app/sage-9.2/local/bin/python3 -u -c 'import 
sys, setuptools, tokenize; sys.argv[0] = 
'"'"'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-build-5yc6io_b/setup.py'"'"';
 
__file__='"'"'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-build-5yc6io_b/setup.py'"'"';f=getattr(tokenize,
 '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', 
'"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' clean 
--all
  running clean
  removing 'build/temp.macosx-10.15-x86_64-3.8' (and everything under it)
  removing 'build/lib.macosx-10.15-x86_64-3.8' (and everything under it)
  'build/bdist.macosx-10.15-x86_64' does not exist -- can't clean it
  'build/scripts-3.8' does not exist -- can't clean it
Failed to build cysignals
ERROR: Failed to build one or more wheels
Exception information:
Traceback (most recent call last):
  File 
"/Users/etairi/app/sage-9.2/local/lib/python3.8/site-packages/pip/_internal/cli/base_command.py",
 line 228, in _main
    status = self.run(options, args)
  File 
"/Users/etairi/app/sage-9.2/local/lib/python3.8/site-packages/pip/_internal/cli/req_command.py",
 line 182, in wrapper
    return func(self, options, args)
  File 
"/Users/etairi/app/sage-9.2/local/lib/python3.8/site-packages/pip/_internal/commands/wheel.py",
 line 184, in run
    raise CommandError(
pip._internal.exceptions.CommandError: Failed to build one or more wheels
Removed build tracker: 
'/private/var/folders/ln/t_25pvmj4m7060k_wc76hnrr0000gn/T/pip-req-tracker-q6hsrr5t'
********************************************************************************
Error building a wheel for cysignals-1.10.2
********************************************************************************

real    0m17.623s
user    0m8.305s
sys     0m3.604s
************************************************************************
Error installing package cysignals-1.10.2
************************************************************************
Please email sage-devel (http://groups.google.com/group/sage-devel)
explaining the problem and including the log file
  /Users/etairi/app/sage-9.2/logs/pkgs/cysignals-1.10.2.log
Describe your computer, operating system, etc.
If you want to try to fix the problem yourself, *don't* just cd to
/Users/etairi/app/sage-9.2/local/var/tmp/sage/build/cysignals-1.10.2 and type 
'make' or whatever is appropriate.
Instead, the following commands setup all environment variables
correctly and load a subshell for you to debug the error:
  (cd '/Users/etairi/app/sage-9.2/local/var/tmp/sage/build/cysignals-1.10.2' && 
'/Users/etairi/app/sage-9.2/sage' --buildsh)
When you are done debugging, you can type "exit" to leave the subshell.
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