From ec101c751a6359483a00c0c3923d502845f45126 Mon Sep 17 00:00:00 2001 From: Romain Forlot Date: Tue, 25 Jul 2017 12:40:02 +0200 Subject: 2 Kernel checks available (warning or mandatory) Use 2 differents checks, one specify a mandatory kernel version and the other will output a warning and position a preprocessing variable that can be used in the code to exclude portions of code that use kernel features not available under a certain version. Change-Id: Ifc6848df1a1a448094f5312ea23e6d4837e8ef14 Signed-off-by: Romain Forlot --- cmake/cmake.d/01-variables.cmake | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'cmake/cmake.d/01-variables.cmake') diff --git a/cmake/cmake.d/01-variables.cmake b/cmake/cmake.d/01-variables.cmake index 1bba5ce..3891f53 100644 --- a/cmake/cmake.d/01-variables.cmake +++ b/cmake/cmake.d/01-variables.cmake @@ -71,6 +71,21 @@ else() set(OSRELEASE "NOT DEBIAN OS") endif() +if(DEFINED ENV{SDKTARGETSYSROOT}) + file(STRINGS $ENV{SDKTARGETSYSROOT}/usr/include/linux/version.h LINUX_VERSION_CODE_LINE REGEX "LINUX_VERSION_CODE") +elseif(DEFINED ENV{PKG_CONFIG_SYSROOT_DIR}) + file(STRINGS $ENV{PKG_CONFIG_SYSROOT_DIR}/usr/include/linux/version.h LINUX_VERSION_CODE_LINE REGEX "LINUX_VERSION_CODE") +else() + file(STRINGS /usr/include/linux/version.h LINUX_VERSION_CODE_LINE REGEX "LINUX_VERSION_CODE") +endif() + +string(REGEX MATCH "[0-9]+" LINUX_VERSION_CODE ${LINUX_VERSION_CODE_LINE}) +math(EXPR a "${LINUX_VERSION_CODE} >> 16") +math(EXPR b "(${LINUX_VERSION_CODE} >> 8) & 255") +math(EXPR c "(${LINUX_VERSION_CODE} & 255)") + +set(KERNEL_VERSION "${a}.${b}.${c}") + # Include project configuration # ------------------------------ project(${PROJECT_NAME} VERSION ${PROJECT_VERSION} LANGUAGES ${PROJECT_LANGUAGES}) -- cgit 1.2.3-korg