[CMAKE] CYGWIN: use GCC instead of AS for building ASM

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.

[carlo-bramini]

Compiling on CYGWIN shows this error when building assembly sources:

/usr/bin/as: unrecognized option `-x'
ninja: build stopped: subcommand failed.

CMakeLists.txt applies -x assembler-with-cpp but this option is expected to work only if gcc or g++ drivers are called.
Instead, during configuration, CMake prints this:

-- Found assembler: /usr/bin/as

But this is wrong, because -x option is not recognized by as.
This happens because CMakeLists.txt forces ASM-ATT which excludes gcc and it uses as instead.
But it does this ONLY for CYGWIN and actually it is not possible to understand why it has been done.
The solution of the problem is to let CMake using gcc instead of as, by simply removing ASM-ATT and use ASM instead.
After that, CMake prints this during the configuration:

-- Found assembler: /usr/bin/cc

and context is now built without problems after this patch.
See also #309 for additional details.

[olk]

did you run the unit-test?

[carlo-bramini]

did you run the unit-test?

Actually not, I'm still not able to build all boost libraries because other errors.

However, and only for CYGWIN, if you force to use as instead of gcc and you feed -x assembler-with-cpp on the command line, then it will never build the source code because that option is not recognized by the raw assembler.
This is inevitable.

[olk]

The PR will only be accepted if the tests are executed correctly.