[LEDE-DEV] [PATCH ubox] cmake: Check for getrandom system call

[Felix Fietkau]

On 2017-02-05 03:41, Florian Fainelli wrote:
> In case we are building against a kernel that is too old and does not
> support SYS_getrandom, error out with a message indicating so.
> 
> Signed-off-by: Florian Fainelli <f.fainelli at gmail.com>
> ---
>  CMakeLists.txt | 15 +++++++++++----
>  1 file changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/CMakeLists.txt b/CMakeLists.txt
> index 6cf0c934aac6..9033493c7a3b 100644
> --- a/CMakeLists.txt
> +++ b/CMakeLists.txt
> @@ -16,10 +16,17 @@ IF(DEBUG)
>    ADD_DEFINITIONS(-DDEBUG -g3)
>  ENDIF()
>  
> -ADD_EXECUTABLE(getrandom getrandom.c)
> -INSTALL(TARGETS getrandom
> -	RUNTIME DESTINATION bin
> -)
> +INCLUDE (CheckSymbolExists)
> +CHECK_SYMBOL_EXISTS(SYS_getrandom sycall.h getrandom)
Please test your changes in LEDE before sending them out. This does not
compile at all because of a typo.
I've pushed a fix to git.

- Felix