Commit graph

324 commits

Author SHA1 Message Date
Sigvart Hovland
3ffdcf4fca cmake: boilerplate: Fix ZEPHYR_BASE variable for windows
In windows an additional / is added when using zephyr-env.cmd
this causes a build error in some scenarios. It also creates
ugly file paths.

Signed-off-by: Sigvart Hovland <sigvart.hovland@nordicsemi.no>
2019-04-18 17:51:47 -04:00
Marc Herbert
3ad96bfc91 extensions.cmake: add two cc/compile_options callgraph comments
This would have saved me about an hour exploring the code and piecing it
together.

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-04-18 17:47:58 -04:00
Jacob Siverskog
bb09c458c1 cmake: Prevent infinite recursion
If SDK_VERSION for whatever reason is unset cmake will end up in an
inifite recursion loop, which for me crashed using cmake version
3.13.4 and exits with an error using 3.14.1.

This may happen if ZEPHYR_TOOLCHAIN_VARIANT is set to "zephyr", but
ZEPHYR_SDK_INSTALL_DIR is invalid (or unset).

Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
2019-04-18 09:23:46 -04:00
Sebastian Bøe
397abd41c8 cmake: DT: Add support for out-of-tree binding root directories
Just like board's can be placed in out-of-tree BOARD_ROOT's, we now
support DeviceTree sources and bindings being placed in out-of-tree
DTS_ROOT's.

This required for out-of-tree drivers that use DeviceTree.

To implement this we get rid of various user-settable CMake variables
like DTS_APP_BINDINGS, DTS_APP_INCLUDE, and instead have ZEPHYR_BASE,
APPLICATION_SOURCE_DIR and out-of-tree directories conform to using
the same DTS_ROOT concept and directory structure.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-04-17 16:25:41 -05:00
Sebastian Bøe
9472299226 cmake: DT: Change from -Idts/common to -isystem dts/common
All DT include directories are system directories, except for
dts/common. There is no reason for dts/common to diverge, so we align
it with the other directories to be consistent.

Also, we move it closer to the other include directories.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-04-17 16:25:41 -05:00
Marcin Szymczyk
fa0083ad0e cmake: fix support for out of tree shields
After the rework in #12403, specifying a shield which has overlay
out of the tree causes unnecessary inclusions of overlays.
For every board root, overlays that have same index as
expected overlay are being included.
Fix this by removing already included overlays from SHIELD list.

Signed-off-by: Marcin Szymczyk <Marcin.Szymczyk@nordicsemi.no>
2019-04-17 10:35:11 -05:00
Marc Herbert
39131dc3ce git.cmake: let the environment override BUILD_VERSION
This is needed to remove noise when comparing binaries across git
commits and more generally for anyone who wants to manual
control/override the version number when building with or without a
.git/ subdirectory.

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-04-17 08:30:41 -04:00
Marc Herbert
f098b44a1a cmake: atomic rename to fix toolchain cache creation race
While this race seems unlikely and harmless let's play it safe and
implement the usual solution: temporary file + atomic rename.

The race is unlikely and maybe even harmless because:

- Only sanitycheck seems to invoke cmake concurrently.
- Users rarely delete their ~/.cache/zephyr/ToolchainCapabilityDatabase/
- All concurrent cmake processes write the same, single byte to the same
  files.
- Creating a single byte is at least very fast, so extremely short
  window for others to read an empty file.

For additional background see links in issue #9992

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-04-17 08:28:24 -04:00
Anas Nashif
3ae52624ff license: cleanup: add SPDX Apache-2.0 license identifier
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier.  Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.

By default all files without license information are under the default
license of Zephyr, which is Apache version 2.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-04-07 08:45:22 -04:00
Marc Herbert
46353438e8 zephyr_library_compile_options(): silently de-duplicate
PR #14776 / commit 915a353255 changed function
zephyr_library_compile_options() to use MD5 instead of RANDOM for build
reproduction reasons. As later predicted by Sebastian Bøe in the PR
(thx), the names generated for these pseudo-libraries won't be unique
anymore if the exact same flag gets added more than once.

To reproduce the issue, simply add the following two lines in some
CMakeLists.txt file like samples/hello_world/CMakeLists.txt:

zephyr_library_compile_options("-Dfubar=barfu")
zephyr_library_compile_options("-Dfubar=barfu")

cmake will then fail like this:

 CMake Error at zephyr/cmake/extensions.cmake:403 (add_library):
  add_library cannot create target
  "options_interface_lib_e689fdb7eb15d801c2f95dd61301fc5e" because
  another target with the same name already exists.  The existing
  target is an interface library created in source directory
  "zephyr/samples/hello_world".  See documentation for
  policy CMP0002 for more details.
 Call Stack (most recent call first):
  CMakeLists.txt:9 (zephyr_library_compile_options)

As requested by Sebastian, silently discard duplicate options just like
CMake does.

Fixes #15093

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-04-04 08:11:14 -04:00
Marc Herbert
c240b69956 zephyr_module.cmake: restore ability to build without modules
Kconfig.modules used to be an empty file when no modules. PR #14667 /
commit bd7569f272 "cmake: Extracted Zephyr module processing into
python script" unintentionally changed that to no Kconfig.modules file
at all when no west and no modules. kconfig.py doesn't like that and
crashes. Restore the empty file.

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-04-01 03:10:26 +08:00
Torsten Rasmussen
bd7569f272 cmake: Extracted Zephyr module processing into python script
Fixes: #14513

This commit move the functionality of extracting zephyr modules into
generated CMake and Kconfig include files from CMake into python.

This allows other tools, especially CI to re-use the zephyr module
functionality.

Signed-off-by: Torsten Rasmussen <torsten.rasmussen@nordicsemi.no>
2019-03-29 23:10:59 -04:00
Marc Herbert
915a353255 extensions.cmake: need unique strings, not random ones
1. To support being called multiple times, the function
zephyr_library_compile_options() uses unique
options_interface_lib_${random} names. These only need to be unique, not
random. So replace them with a simple MD5 hash of the ${item} argument.

To reproduce quickly run:
  sanitycheck -b -p qemu_xtensa --tag shell
... a few times and compare the output directories.

This bug sits for now at the top of the list of build reproducibility
issues the most bizarre and difficult to root cause. When running
sanitycheck over a large sample of configurations it was affecting
only qemu_xtensa/**/zephyr/arch/arch/xtensa/core/startup/Makefile
files (and their corresponding CMakeFiles/TargetDirectories.txt),
randomly ordering the following three Make targets and only these
three: rebuild_cache, edit_cache, arch__xtensa__core__startup.

The key to root causing was cmake --trace-expand which prints the random
string.

2. generate_unique_target_name_from_filename() also generated a random
string for the same uniqueness reason. This one was easier to root cause
and reproduce with: sanitycheck --tag gen_inc_file

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-03-28 14:27:47 -05:00
Sebastian Bøe
7061c035cd kconfig: Move Kconfig.modules to the root build directory
Currently, the Kconfig.modules file is placed in the build directory
relative to the CMake "project". But technically, the file is not
project-specific, but global, or build-directory specific.

So we move it up one level to the CMAKE_BINARY_DIR instead. Currently,
there is only one project, so this change has no effect, but this
enables us to have multiple projects in the future, which again
enables multi-image builds.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
Signed-off-by: Håkon Øye Amundsen <haakon.amundsen@nordicsemi.no>
2019-03-28 09:23:02 -04:00
Marti Bolivar
2785bee30e west: require version 0.5.6
Set the revision to the v0.5.6 tag in west.yml and update the minimum
version. Barring any (more) major undiscovered issues, this will be the
version used with Zephyr v1.14.

Signed-off-by: Marti Bolivar <marti@foundries.io>
2019-03-25 22:46:56 -04:00
Arun Joshi
373a42b861 host-tools.cmake: Corrected sdk download url
Corrected sdk download url for 0.10.0

Signed-off-by: Arun Joshi <arun1.joshi@intel.com>
2019-03-21 09:07:53 -05:00
Marc Herbert
7d3fbfccd1 host-gcc/target.cmake: stop discarding CMAKE_<tool>_FLAGS for x86
Prepend -m32 to existing flags as opposed to silently override and
discard them:

- set(CMAKE_<tool>_FLAGS                -m32 )
+ string(PREPEND CMAKE_<tool>_FLAGS   " -m32")

This stops discarding additional flags passed with either cmake
-DCMAKE_<tool>_FLAGS="-fu -bar" or cmake -C params.cmake.

Note this bug was affecting only the combination of x86 and
CMAKE_<tool>_FLAGS. x86_64 wasn't affected and other, non-empty
CMAKE_<tool>_FLAGS_[DEBUG/RELEASE/etc.] weren't affected either.

Also convert flags string to list when invoking --print-libgcc-file-name
to support more than one CMAKE_C_FLAGS.

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-03-21 00:21:27 -07:00
Kumar Gala
d6eaf5f7e9 cmake: Bump min SDK version to 0.10.0
We need the 0.10.0 release for new support for the ARM-v8m SoCs and
RISC-V.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2019-03-20 15:26:49 -05:00
Wayne Ren
c632ddaea3 cmake: add debugserver target for nsim
add debugserver target to run  "make debugserver" for nsim

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2019-03-20 00:35:43 -07:00
Andy Ross
154c20ce7a cmake/emu: Add qemu SMP flags automatically
No need to do this in arch code, all qemu variants speak the same
command line and the kconfig values we need are easily available.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-03-13 19:15:20 +01:00
Sebastian Bøe
755ffed242 cmake: kconfig: Allow user to add custom menuconfig impl.
Out-of-tree Kconfig frontends need to know which environment variables
are exported by Zephyr to Kconfig.

To support this we allow additional Kconfig python frontend targets to
be specified from out-of-tree.

This support was added on request by a third-party with a custom
Kconfig frontend.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-03-13 14:46:16 +01:00
Kumar Gala
7aa8e43add libc: newlib: Cleanup/fix setting of system include paths
When we build with newlib we don't set -nostdinc.  In that case make
sure that we leave it to the toolchain to set the system include paths.

The one exception to leaving to the toolchain to set the system include
paths is the path to the newlib headers.  Since we build
with -ffreestanding we need to make sure the newlib header path is the
before the toolchain headers. Otherwise the toolchain's 'freestanding'
headers get picked up and that causes issues (for example getting PRI*64
defined properly from inttypes.h due to __STDC_HOSTED__ being '0').

For newlib we accomplish this by having the only system header specified
by zephyr_system_include_directories() being just the newlib headers.

Note: for minlibc we leave things alone as things just happen to work as
the -I include of the libc headers takes precedence over -isystem so we
get the libc headers over the toolchain ones.  For the newlib case it
appears that setting both -I and -isystem for the same dir causes the
-I to be ignored.

Fixes #14310

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2019-03-13 06:50:23 -05:00
Torsten Rasmussen
d042d628b6 cmake: west: Allow mono-repo to build when west is installed
If one invokes cmake with west in the PATH but not inside a west
installation (i.e. in a monorepo setup), west will try to list the
zephyr modules issuing an error message.

Test if west list succeeds before using result for module testing.

Fixes #14177

Signed-off-by: Torsten Rasmussen <torsten.rasmussen@nordicsemi.no>
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
2019-03-11 20:38:03 -07:00
Marti Bolivar
6929c374a4 cmake: add west version checking
Parse the west version output and make sure both bootstrapper and
installation wests are up to date. This will still work after the two
are combined into what gets installed via PyPI.

Fixes: #13209
Signed-off-by: Marti Bolivar <marti@foundries.io>
2019-03-11 20:37:27 -07:00
Sebastian Bøe
f96c9bc75a kconfig: Have ninja Re-run CMake when Kconfig sources change
Users often get confused when they change Kconfig sources and then
rebuild only to discover that nothing happens. To fix this we add a
dependency between re-running cmake, and all Kconfig sources, similair
to how touching CMakeLists.txt files cause CMake to re-run.

This fixes #5634

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-03-07 10:40:00 +01:00
Sebastian Bøe
cabb35fcc9 cmake: Kconfig: Minor refactorings in preparation for solving #5634
Minor refactoring of the build scripts in preparation for the patch
that resolves #5634.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-03-07 10:40:00 +01:00
Flavio Ceolin
18d96436a0 compiler: clang: Include missing target
Adding baremetal target when using clang/llvm.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
2019-03-06 22:40:25 -05:00
Jacob Siverskog
99074fc75e toolchain: Fix typo and grammar in error message
Minor grammatical changes.

Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
2019-03-05 08:28:40 -05:00
Jacob Siverskog
5105947924 toolchain: Improve error message on mismatching SDK version
Add useful information to the error message printed when the installed
SDK does not fulfill version requirements.

Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
2019-03-05 08:28:40 -05:00
Sebastian Bøe
6d4ba3490f cmake: Deprecate 'set_conf_file'
In-tree, all usage of 'set_conf_file' is implementing the same
pattern (with some inconsequential differences).

To reduce copy-paste and get closer to dropping support for
'set_conf_file', we include this pattern into the built-in set of
patterns.

'set_conf_file' is causing issues for future extensions,
e.g. multi-image support, and is also the source of a lot of
duplicated code.

Note support for 'set_conf_file' is not dropped, it is only marked as
deprecated.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-03-01 09:44:09 +01:00
Andy Ross
fe04adf99b lib/os: Conditionally eliminate alloca/VLA usage
MISRA rules (see #9892) forbid alloca() and family, even though those
features can be valuable performance and memory size optimizations
useful to Zephyr.

Introduce a MISRA_SANE kconfig, which when true enables a gcc error
condition whenever a variable length array is used.

When enabled, the mempool code will use a theoretical-maximum array
size on the stack instead of one tailored to the current pool
configuration.

The rbtree code will do similarly, but because the theoretical maximum
is quite a bit larger (236 bytes on 32 bit platforms) the array is
placed into struct rbtree instead so it can live in static data (and
also so I don't have to go and retune all the test stack sizes!).
Current code only uses at most two of these (one in the scheduler when
SCHED_SCALABLE is selected, and one for dynamic kernel objects when
USERSPACE and DYNAMIC_OBJECTS are set).

This tunable is false by default, but is selected in a single test (a
subcase of tests/kernel/common) for coverage.  Note that the I2C and
SPI subsystems contain uncorrected VLAs, so a few platforms need to be
blacklisted with a filter.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2019-02-28 10:06:35 -08:00
Sebastian Bøe
ea57a9fb7d cmake: Omit comments that are either redunant or wrong
Drop these CMake comments. It is redundant with a below comment to
describe 'app', and it is incorrect to state that omitting
boilerplate.cmake is permitted/supported.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-02-27 08:50:59 -06:00
Sebastian Bøe
1108e38a01 cmake: Omit if statement that is always true
We had an if-statement around policy 79 because we used to need to
support CMake versions before 3.13.0. But now 3.13.1 is the minimum
required version so the if statement always evaluates to true and can
be omitted.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-02-27 08:50:59 -06:00
Marc Herbert
f085647521 cmake: more deterministic git describe --abbrev=12
Hardcode --abbrev=12 not to depend on personal git config preference.
12 is deemed large enough for the Linux kernel which should leave some
room:
https://public-inbox.org/git/xmqq37knwcf4.fsf@gitster.mtv.corp.google.com/

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
2019-02-27 10:27:47 +01:00
Anas Nashif
ee11592186 toolchain: Do not hardcode where the toolchain was installed
Contrary to all other toolchains, the xcc toolchain had a hardocded
installation path. Replace this with XTENSA_TOOLCHAIN_PATH so users can
install in different locations.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-26 02:58:07 +01:00
Daniel Leung
336d3d3adc xtools: exclude "sources" when searching xtools output dir
When using xtools as toolchain, cmake searches the toolchain home
directory. However, if the first toolchain directory does not
begin with any character before "s", "sources" (if exists) would
become the first directory being probed. Since it does not
conform to "arch-vendor-abi" naming, cmake would fail.
So exclude "sources" from the list to avoid this issue.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2019-02-26 02:28:38 +01:00
Anas Nashif
aa049e5d8f toolchain: abstract setting -nostdinc
- newlib needs c standard includes (so no -nostdinc)
- xcc needs toolchain headers (so no -nostdinc)
- with host gcc:
  - x86_64 should not build with standard includes (-nostdinc needed)
  - native_posix should build with standard include (no -nostdinc)
..
..

To simplify, abstract this and move it to compilers/toolchains and still
depend on what the application wants.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-24 17:48:10 -05:00
Anas Nashif
6cd15825e1 compiler: add xcc as a standalone compiler
XCC is based on xcc, but is nothing like gcc and his many differences.
Instead of ifdeffing the gcc code with Xcc specifics, maintain it
standalone.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-24 17:48:10 -05:00
Mark Ruvald Pedersen
cb0fd451c2 cmake: Toolchain abstraction: Assembly
Introduce toolchain_cc_asm macro to capture toolchain specific flags
related to assembly.

-D_ASMLANGUAGE is kept common for all, assuming -D as define flag is
supported by all compilers (which is almost the case).

No functional change expected.

Clang's flags are compatible with gcc, and are thus inherited.

This is motivated by the wish to abstract Zephyr's usage of toolchains,
permitting easier porting to other (commercial) toolchains.

Signed-off-by: Mark Ruvald Pedersen <mped@oticon.com>
2019-02-23 07:41:46 -05:00
Kumar Gala
830ec0285c cmake: toolchain: zephyr-0.10.0: Fix setting of SYSROOT_DIR on xtensa
We need to set SYSROOT_DIR as the last thing we do on target.cmake so
we reset how its set for xtensa.  Otherwise when we build with newlib
we will not get the proper path to newlib headers in the toolchain.

This matches the behavior of 0.9.5/target.cmake

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2019-02-21 15:06:19 -05:00
Kumar Gala
5a0fec4c26 cmake: toolchain: zephyr-0.9.5: Fix setting of TOOLCHAIN_HAS_NEWLIB
There was an oversight and the Zephyr SDK 0.9.5 toolchain should report
itself as supporting newlib.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2019-02-21 07:44:46 -05:00
Kumar Gala
9c2ac77861 cmake: Fix setting of -nostdinc
We where defining the variable NOSTDINC_F after we tried to use it.
Move the definition before the first reference fixes things.  When
-nostdinc now enabled we need to explicitly add the compiler include
path for x86_64 based builds (x86_64 and ARCH_POSIX).

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2019-02-20 12:13:45 -06:00
Mark Ruvald Pedersen
63df409906 cmake: Toolchain abstraction: C++
Introduce toolchain_cc_cpp_*-family of macros.

Move the following into the toolchain_cc_cpp_* macros:
 * Common base set of flags
 * C++ standard version
 * RTTI
 * Exceptions

These macros must be implemented by every compiler port.
These macros set the respective flags, but leaves logic and control to
the root CMakeLists.txt file.

No functional change expected.

Clang's C++ flags are compatible with gcc, and are thus
inherited.

This is motivated by the wish to abstract Zephyr's usage of toolchains,
permitting easier porting to other (commercial) toolchains.

Signed-off-by: Mark Ruvald Pedersen <mped@oticon.com>
2019-02-19 12:33:19 -05:00
Anas Nashif
f9e73c90f2 sanitycheck: do no overide OVERLAY_CONFIG
We have been overriding OVERLAY_CONFIG coming from tests. Concat all
files and create one variable that we pass to kconfig as list.

Fixes #13320

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-18 10:49:08 -05:00
Mark Ruvald Pedersen
0b3c65feea cmake: Toolchain abstraction: optimizations
Introduce toolchain_cc_optimize_for_* family of macros.
Each macro represents a general optimization class.
Each macro is then responsible for setting an output variable to that
class-of-optimization's flag.
The names of these output variables are decided from the root
CMakeLists.txt.

No functional change expected.

Clang's optimization flags are compatible with gcc, and are thus
inherited.

This is motivated by the wish to abstract Zephyr's usage of toolchains,
permitting easier porting to other (commercial) toolchains.

Signed-off-by: Mark Ruvald Pedersen <mped@oticon.com>
2019-02-18 08:22:42 -05:00
Sebastian Bøe
1ca1075b20 cmake: kconfig: pass GENERATED_DTS_BOARD_CONF on to kconfig
Make kconfigfunctions.py agnostic to where GENERATED_DTS_BOARD_CONF is
located.

We don't want to encode the path of GENERATED_DTS_BOARD_CONF into more
places than necessary. Also, re-using GENERATED_DTS_BOARD_CONF makes
it easier to change where generated_dts_board.conf is located.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2019-02-12 20:16:47 -05:00
Anas Nashif
33ca224ffd x86_64: use host toolchain
We were select host compiler from the generic gcc compiler section which
is used for cross toolchains. This arch should use the host-gcc compiler
definition instead.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-10 11:57:17 -06:00
Anas Nashif
839db87bb8 toolchain: host toolchain does not support newlib
The host toolchain does not support newlib.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-02-10 11:57:17 -06:00
Torsten Rasmussen
7e9d1bdda4 CMake/Kconfig: CMake and Kconfig build integration
This commit allows for Zephyr modules to be natively integrated into
the build system with CMakeLists.txt and Kconfig files.

The sourcing of module files are done in following order:
- If <module>/zephyr/module.yml exists, use cmake and kconfig settings
  for sourcing of additional file
- Else if <module>/zephyr/CMakeLists.txt exists, source this file into
  CMake build tree and add <module>/zephyr/Kconfig as osource

If none of the above files are present, the project is considered to
not be a Zephyr module

Signed-off-by: Torsten Rasmussen <torsten.rasmussen@nordicsemi.no>
2019-02-08 22:47:02 -05:00
Ioannis Glaropoulos
e029d08628 soc: arm: Kconfig option to indicate double-precision FP
This commit introduces a Kconfig option for ARM SoCs, to signify
that the SoC implements a double-precision floating point unit.
The option is utilized in cmake/fpu-for-gcc-m-cpu to select the
appropriate GCC compile option flag for FPU.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
2019-02-08 14:09:18 -06:00