Source: trackballs
Version: 1.3.2-1
Tags: patch upstream
User: debian-cr...@lists.debian.org
Usertags: ftcbfs
X-Debbugs-Cc: Nilesh Patra <nil...@debian.org>
trackballs fails to cross build from source, because it uses the build
architecture preprocessor during guile-snarf invocations. As a
consequence, it fails locating gmp, which is only requested for the host
architecture. The issue is manifested in the CMakeLists.txt, where it
says CPP=cpp. Beyond the issue of what is being passed here, it also
uses an unportable form of environment passing. Please use
${CMAKE_COMMAND} -E env instead. Figuring the right preprocessor is not
entirely trivial. CMake does not seem to know about it by itself. The
closest we can get likely is passing -E to the relevant compiler. I'm
attaching a patch that makes trackballs cross buildable for your
convenience.
Helmut
--- trackballs-1.3.2.orig/CMakeLists.txt
+++ trackballs-1.3.2/CMakeLists.txt
@@ -70,7 +70,7 @@
# cpp is the c++ preprocessor
add_custom_command(OUTPUT guile.cc.x
- COMMAND CPP=cpp; ${GUILE_SNARF} -o guile.cc.x ${PROJECT_SOURCE_DIR}/src/guile.cc ${defstr} ${incstr} -D_GNU_SOURCE=1 -D_REENTRANT
+ COMMAND ${CMAKE_COMMAND} -E env "CPP=${CMAKE_CXX_COMPILER} -E" ${GUILE_SNARF} -o guile.cc.x ${PROJECT_SOURCE_DIR}/src/guile.cc ${defstr} ${incstr} -D_GNU_SOURCE=1 -D_REENTRANT
DEPENDS src/guile.cc
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
