cmake: remove spaces in macro used for compiling cython code

we are facing following FTBFS on jammy + GCC-11.2 + Cython 0.29 +
CMake 3.22:

creating /home/jenkins-build/build/workspace/ceph-api/build/lib/cython_modules/temp.linux-x86_64-3.10/home/jenkins-build/build/workspace/ceph-api/build/src/pybind/cephfs
compile options: '-I/usr/include/python3.10 -I/usr/include/python3.10 -c'
extra options: '-Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -iquote/home/jenkins-build/build/workspace/ceph-api/src/include -w -Dvoid0=dead_function(void) -D__Pyx_check_single_interpreter(ARG)=ARG ## 0 -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2'
cc: /home/jenkins-build/build/workspace/ceph-api/build/src/pybind/cephfs/cephfs.c
cc: warning: ##: linker input file unused because linking not done
cc: error: ##: linker input file not found: No such file or directory
cc: warning: 0: linker input file unused because linking not done
cc: error: 0: linker input file not found: No such file or directory

it seems cython is not able to escape the space in the "extra options"
anymore, so the "##" and "0" are considered as object files passed to
compiler in addition to cephfs.c.

in this change the spaces are removed to help cython to make the right
decision.

Signed-off-by: Kefu Chai <tchaikov@gmail.com>

diff --git a/cmake/modules/Distutils.cmake b/cmake/modules/Distutils.cmake
index 192c8c3efe2c6b5db66c57f61d281f7b11589351..daaae4ba63fdbc53f935387a34b4ade63971b3ac 100644 (file)
--- a/cmake/modules/Distutils.cmake
+++ b/cmake/modules/Distutils.cmake
@@ -69,7 +69,7 @@ function(distutils_add_cython_module target name src)
   # This little bit of magic wipes out __Pyx_check_single_interpreter()
   # Note: this is reproduced in distutils_install_cython_module
   list(APPEND PY_CPPFLAGS -D'void0=dead_function\(void\)')
-  list(APPEND PY_CPPFLAGS -D'__Pyx_check_single_interpreter\(ARG\)=ARG \#\# 0')
+  list(APPEND PY_CPPFLAGS -D'__Pyx_check_single_interpreter\(ARG\)=ARG\#\#0')
   set(PY_CC ${compiler_launcher} ${CMAKE_C_COMPILER} ${c_compiler_arg1})
   set(PY_CXX ${compiler_launcher} ${CMAKE_CXX_COMPILER} ${cxx_compiler_arg1})
   set(PY_LDSHARED ${link_launcher} ${CMAKE_C_COMPILER} ${c_compiler_arg1} "-shared")
@@ -128,7 +128,7 @@ function(distutils_install_cython_module name)
     set(ENV{LDSHARED} \"${PY_LDSHARED}\")
     set(ENV{CPPFLAGS} \"-iquote${CMAKE_SOURCE_DIR}/src/include
                         -D'void0=dead_function\(void\)' \
-                        -D'__Pyx_check_single_interpreter\(ARG\)=ARG \#\# 0' \
+                        -D'__Pyx_check_single_interpreter\(ARG\)=ARG\#\#0' \
                         ${CFLAG_DISABLE_VTA}\")
     set(ENV{LDFLAGS} \"-L${CMAKE_LIBRARY_OUTPUT_DIRECTORY}\")
     set(ENV{CYTHON_BUILD_DIR} \"${CMAKE_CURRENT_BINARY_DIR}\")