[Buildroot] [PATCH 04/14] pkg-cmake.mk: do not hardcode absolute path in toolchainfile.cmake

[Arnout Vandecappelle <arnout@mind.be>]

On 24/04/14 00:48, Samuel Martin wrote:
> The patch allows sharing or moving the toolchains.
> 
> This is a step toward making the toolchain/sdk relocatable.
> 
> Closes #6818
> 
> Signed-off-by: Samuel Martin <s.martin49@gmail.com>
> Cc: Uwe Strempel <u.strempel@googlemail.com>
> Cc: Arnout Vandecappelle <arnout@mind.be>
> 
> ---
> changes v1 -> v2:
> - rebase
> - use CMAKE_CURRENT_LIST_DIR instead of get_filename_component()
> - rewrite subst call in a more natural way (Arnout)
> ---
>  package/pkg-cmake.mk | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/package/pkg-cmake.mk b/package/pkg-cmake.mk
> index af8ecf5..b2ac2df 100644
> --- a/package/pkg-cmake.mk
> +++ b/package/pkg-cmake.mk
> @@ -159,18 +159,19 @@ host-cmake-package = $(call inner-cmake-package,host-$(pkgname),$(call UPPERCASE
>  ################################################################################
>  
>  define TOOLCHAINFILE_CMAKE
> +string(REPLACE /usr/share/buildroot "" _HOST_DIR $${CMAKE_CURRENT_LIST_DIR})

 _HOST_DIR is not sufficiently explanatory. How about RELOCATED_HOST_DIR?

 This could benefit from some explanatory comment (took me some time to
figure it out, at least).

# In order to allow the toolchain to be relocated, we calculated the
# HOST_DIR based on this file's location: $(HOST_DIR)/usr/share/buildroot
# In all the other variables, HOST_DIR will be replaced by
# RELOCATED_HOST_DIR

>  set(CMAKE_SYSTEM_NAME Linux)
> -set(CMAKE_C_COMPILER $(TARGET_CC_NOCCACHE))
> -set(CMAKE_CXX_COMPILER $(TARGET_CXX_NOCCACHE))
> +set(CMAKE_C_COMPILER $(subst $(HOST_DIR),$${_HOST_DIR},$(TARGET_CROSS))gcc)

 Why is this using $(TARGET_CROSS)gcc instead of the original
$(TARGET_CC_NOCACHE) ?


 Regards,
 Arnout

> +set(CMAKE_CXX_COMPILER $(subst $(HOST_DIR),$${_HOST_DIR},$(TARGET_CROSS))g++)
>  set(CMAKE_C_FLAGS "$${CMAKE_C_FLAGS} $(TARGET_CFLAGS)" CACHE STRING "Buildroot CFLAGS" FORCE)
>  set(CMAKE_CXX_FLAGS "$${CMAKE_CXX_FLAGS} $(TARGET_CXXFLAGS)" CACHE STRING "Buildroot CXXFLAGS" FORCE)
>  set(CMAKE_INSTALL_SO_NO_EXE 0)
> -set(CMAKE_PROGRAM_PATH $(HOST_DIR)/usr/bin)
> -set(CMAKE_FIND_ROOT_PATH $(STAGING_DIR))
> +set(CMAKE_PROGRAM_PATH $${_HOST_DIR}/usr/bin)
> +set(CMAKE_FIND_ROOT_PATH $${_HOST_DIR}/$(STAGING_SUBDIR))
>  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
>  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
>  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
> -set(ENV{PKG_CONFIG_SYSROOT_DIR} $(STAGING_DIR))
> +set(ENV{PKG_CONFIG_SYSROOT_DIR} $${_HOST_DIR}/$(STAGING_SUBDIR))
>  endef
>  
>  $(HOST_DIR)/usr/share/buildroot/toolchainfile.cmake:
> 


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
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