GitHub user lucaceresoli opened a pull request:
https://github.com/apache/qpid-proton/pull/46
proton-c: fix C compiler detection with _ARG1/_ARG2
The C compiler commandline in CMake is composed by the concatenation of
CMAKE_C_COMPILER + CMAKE_C_COMPILER_ARG1 + CMAKE_C_COMPILER_ARG2.
In most use cases the two additional argument variables are empty, thus
CMAKE_C_COMPILER can be used without any noticeable difference.
The Buildroot embedded Linux build system [0], however, optionally exploits
the
CMAKE_C_COMPILER_ARG1 variable to speed up the cross-compilation of
CMake-based
packages using ccache. It does so by setting [1]:
CMAKE_C_COMPILER = /path/to/ccache
CMAKE_C_COMPILER_ARG1 = /path/to/cross-gcc
This works fine with other CMake-based packages, but proton-c's
CMakeLists.txt
calls gcc to extract the compiler version. It does so by calling
"${CMAKE_C_COMPILER} -dumpversion", without honoring the two extra
arguments.
Within Buildroot with ccache enabled, this means calling
"/path/to/ccache -dumpversion", which fails with the error:
ccache: invalid option -- 'd'
Fix the compiler check by adding the two arguments.
[0] http://buildroot.net/
[1]
http://git.buildroot.net/buildroot/tree/support/misc/toolchainfile.cmake.in?id=2015.05
Signed-off-by: Luca Ceresoli <l...@lucaceresoli.net>
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/lucaceresoli/qpid-proton luca/fix-gcc-check
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/qpid-proton/pull/46.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #46
----
commit f24be9ae9ab01c7507a366e9d5529c444f0b7edd
Author: Luca Ceresoli <l...@lucaceresoli.net>
Date: 2015-07-10T08:13:47Z
proton-c: fix C compiler detection with _ARG1/_ARG2
The C compiler commandline in CMake is composed by the concatenation of
CMAKE_C_COMPILER + CMAKE_C_COMPILER_ARG1 + CMAKE_C_COMPILER_ARG2.
In most use cases the two additional argument variables are empty, thus
CMAKE_C_COMPILER can be used without any noticeable difference.
The Buildroot embedded Linux build system [0], however, optionally exploits
the
CMAKE_C_COMPILER_ARG1 variable to speed up the cross-compilation of
CMake-based
packages using ccache. It does so by setting [1]:
CMAKE_C_COMPILER = /path/to/ccache
CMAKE_C_COMPILER_ARG1 = /path/to/cross-gcc
This works fine with other CMake-based packages, but proton-c's
CMakeLists.txt
calls gcc to extract the compiler version. It does so by calling
"${CMAKE_C_COMPILER} -dumpversion", without honoring the two extra
arguments.
Within Buildroot with ccache enabled, this means calling
"/path/to/ccache -dumpversion", which fails with the error:
ccache: invalid option -- 'd'
Fix the compiler check by adding the two arguments.
[0] http://buildroot.net/
[1]
http://git.buildroot.net/buildroot/tree/support/misc/toolchainfile.cmake.in?id=2015.05
Signed-off-by: Luca Ceresoli <l...@lucaceresoli.net>
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
