I'm currently trying to compile a trivial c++ example project before including rxcpp to my main project, however, I'm running into difficulties where rxcpp library is not found.
All files are within the same directory.
Workstation specs:
main.cc
#include <iostream>
#include "rxcpp/rx.hpp"
int main()
{
std::cout << "Hello RxCpp!";
}
Where the Bazel workspace file is written as
# WORKSPACE
new_http_archive(
name="RxCpp",
url="https://github.com/Reactive-Extensions/RxCpp/archive/v4.0.0.zip",
build_file="BUILD.rxcpp",
strip_prefix = "RxCpp-4.0.0"
)
Where BUILD.rxcpp is written as
# BUILD.rxcpp
cc_library(
name="rxcpp",
hdrs=glob(["Rx/v2/src/rxcpp/*.hpp",
"Rx/v2/src/rxcpp/**/*.hpp"]),
visibility=["//visibility:public"]
)
and the Bazel project BUILD file is written as
# BUILD
cc_binary(
name="some_binary_name",
srcs=["main.cc"],
deps=["@RxCpp//:rxcpp"]
)
Running
bazel build -c dbg --cxxopt='-std=c++14' //:some_binary_name --verbose_failures --sandbox_debug
returned:
INFO: Analysed target //:some_binary_name (1 packages loaded).
INFO: Found 1 target...
ERROR: /Users/ddowney/workspace/cpp/rxcpp_test_build/BUILD:2:1: C++ compilation of rule '//:some_binary_name' failed (Exit 1): sandbox-exec failed: error executing command
(cd /private/var/tmp/_bazel_ddowney/234783b10f6b175e3bb988e899ac1d0e/execroot/__main__ && \
exec env - \
APPLE_SDK_PLATFORM='' \
APPLE_SDK_VERSION_OVERRIDE='' \
DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer \
PATH=/Users/ddowney/anaconda3/bin:/Users/ddowney/.cargo/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/usr/local/go/bin:/usr/local/share/dotnet:/opt/X11/bin:/Users/ddowney/anaconda3/bin:/Users/ddowney/.cargo/bin:/Users/ddowney/Library/Android/sdk/platform-tools/:/Users/ddowney/Library/Android/sdk/platform-tools/ \
SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk \
TMPDIR=/var/folders/sj/dylcfjks0hbc43fk8ylf71fw0000gn/T/ \
XCODE_VERSION_OVERRIDE=9.2.0 \
/usr/bin/sandbox-exec -f /private/var/tmp/_bazel_ddowney/234783b10f6b175e3bb988e899ac1d0e/bazel-sandbox/6190111679734456077/sandbox.sb /private/var/tmp/_bazel_ddowney/234783b10f6b175e3bb988e899ac1d0e/execroot/__main__/_bin/process-wrapper '--timeout=0' '--kill_delay=15' external/local_config_cc/wrapped_clang '-D_FORTIFY_SOURCE=1' -fstack-protector -fcolor-diagnostics -Wall -Wthread-safety -Wself-assign -fno-omit-frame-pointer -g '-std=c++11' '-std=c++14' -iquote . -iquote bazel-out/darwin-dbg/genfiles -iquote external/RxCpp -iquote bazel-out/darwin-dbg/genfiles/external/RxCpp -iquote external/bazel_tools -iquote bazel-out/darwin-dbg/genfiles/external/bazel_tools -isystem external/bazel_tools/tools/cpp/gcc3 -MD -MF bazel-out/darwin-dbg/bin/_objs/some_binary_name/main.d '-frandom-seed=bazel-out/darwin-dbg/bin/_objs/some_binary_name/main.o' '-isysroot __BAZEL_XCODE_SDKROOT__' -no-canonical-prefixes -Wno-builtin-macro-redefined '-D__DATE__="redacted"' '-D__TIMESTAMP__="redacted"' '-D__TIME__="redacted"' -c main.cc -o bazel-out/darwin-dbg/bin/_objs/some_binary_name/main.o)
main.cc:1:10: fatal error: 'rx/rx.hpp' file not found
#include "rx/rx.hpp"
^~~~~~~~~~~
1 error generated.
Target //:some_binary_name failed to build
INFO: Elapsed time: 2.123s, Critical Path: 1.84s
FAILED: Build did NOT complete successfully
I would expect to find the rxcpp library under bazel-out/darwin-dbg/bin/external/RxCpp in the current directory, however, this is not the case.
The output of the build directory is as follows:
ls -la /private/var/tmp/_bazel_ddowney/234783b10f6b175e3bb988e899ac1d0e/execroot/__main__/external/RxCpp/Rx/v2/src/rxcpp/
total 616
drwxr-xr-x 26 ddowney wheel 832 21 Mar 13:51 .
drwxr-xr-x 3 ddowney wheel 96 21 Mar 13:51 ..
drwxr-xr-x 61 ddowney wheel 1952 21 Mar 13:51 operators
-rwxr-xr-x 1 ddowney wheel 6408 22 Mar 2017 rx-connectable_observable.hpp
-rwxr-xr-x 1 ddowney wheel 9340 22 Mar 2017 rx-coordination.hpp
-rwxr-xr-x 1 ddowney wheel 5675 22 Mar 2017 rx-coroutine.hpp
-rwxr-xr-x 1 ddowney wheel 5538 22 Mar 2017 rx-grouped_observable.hpp
-rwxr-xr-x 1 ddowney wheel 6171 22 Mar 2017 rx-includes.hpp
-rwxr-xr-x 1 ddowney wheel 251 22 Mar 2017 rx-lite.hpp
-rwxr-xr-x 1 ddowney wheel 8282 22 Mar 2017 rx-notification.hpp
-rwxr-xr-x 1 ddowney wheel 63252 22 Mar 2017 rx-observable.hpp
-rwxr-xr-x 1 ddowney wheel 21989 22 Mar 2017 rx-observer.hpp
-rwxr-xr-x 1 ddowney wheel 14552 22 Mar 2017 rx-operators.hpp
-rwxr-xr-x 1 ddowney wheel 9371 22 Mar 2017 rx-predef.hpp
-rwxr-xr-x 1 ddowney wheel 28270 22 Mar 2017 rx-scheduler.hpp
-rwxr-xr-x 1 ddowney wheel 1045 22 Mar 2017 rx-sources.hpp
-rwxr-xr-x 1 ddowney wheel 495 22 Mar 2017 rx-subjects.hpp
-rwxr-xr-x 1 ddowney wheel 41330 22 Mar 2017 rx-subscriber.hpp
-rwxr-xr-x 1 ddowney wheel 14088 22 Mar 2017 rx-subscription.hpp
-rwxr-xr-x 1 ddowney wheel 3551 22 Mar 2017 rx-test.hpp
-rwxr-xr-x 1 ddowney wheel 3917 22 Mar 2017 rx-trace.hpp
-rwxr-xr-x 1 ddowney wheel 23700 22 Mar 2017 rx-util.hpp
-rwxr-xr-x 1 ddowney wheel 232 22 Mar 2017 rx.hpp
drwxr-xr-x 10 ddowney wheel 320 21 Mar 13:51 schedulers
drwxr-xr-x 12 ddowney wheel 384 21 Mar 13:51 sources
drwxr-xr-x 6 ddowney wheel 192 21 Mar 13:51 subjects
Bazel by default adds -iquote only to the root of your external repository. Therefore the include path in main.cc should be:
#include "Rx/v2/src/rxcpp/rx.hpp"
Or, what you will probably prefer, add includes attribute to BUILD.rxcpp:
cc_library(
name="rxcpp",
hdrs=glob(["Rx/v2/src/rxcpp/*.hpp",
"Rx/v2/src/rxcpp/**/*.hpp"]),
visibility=["//visibility:public"],
includes=["Rx/v2/src/"],
)