Have CMAKE parse conditional lines in KERNEL files
Supports ifeq and ifneq, but requires both to have an else branch
@@ -15,10 +15,33 @@ endfunction ()
# Reads a Makefile into CMake vars.
macro(ParseMakefileVars MAKEFILE_IN)
message(STATUS "Reading vars from ${MAKEFILE_IN}...")
+ set (IfElse 0)
+ set (ElseSeen 0)
file(STRINGS ${MAKEFILE_IN} makefile_contents)
foreach (makefile_line ${makefile_contents})
+#message(STATUS "parsing ${makefile_line}")
+ if (${IfElse} GREATER 0)
+ string(REGEX MATCH "endif[ \t]*" line_match "${makefile_line}")
+ if (NOT "${line_match}" STREQUAL "")
+# message(STATUS "ENDIF ${makefile_line}")
+ set (IfElse 0)
+ set (ElseSeen 0)
+ continue ()
+ endif ()
+ string(REGEX MATCH "else[ \t]*" line_match "${makefile_line}")
+ if (NOT "${line_match}" STREQUAL "")
+# message(STATUS "ELSE ${makefile_line}")
+ set (ElseSeen 1)
+ continue ()
+ endif()
+ if ( (${IfElse} EQUAL 2 AND ${ElseSeen} EQUAL 0) OR ( ${IfElse} EQUAL 1 AND ${ElseSeen} EQUAL 1))
+# message(STATUS "skipping ${makefile_line}")
+ continue ()
+ endif ()
+ endif ()
string(REGEX MATCH "([0-9_a-zA-Z]+)[ \t]*=[ \t]*(.+)$" line_match "${makefile_line}")
if (NOT "${line_match}" STREQUAL "")
+#message(STATUS "match on ${line_match}")
set(var_name ${CMAKE_MATCH_1})
set(var_value ${CMAKE_MATCH_2})
# check for Makefile variables in the string, e.g. $(TSUFFIX)
@@ -33,7 +56,31 @@ macro(ParseMakefileVars MAKEFILE_IN)
else ()
string(REGEX MATCH "include \\$\\(KERNELDIR\\)/(.+)$" line_match "${makefile_line}")
if (NOT "${line_match}" STREQUAL "")
+#message(STATUS "match on include ${line_match}")
ParseMakefileVars(${KERNELDIR}/${CMAKE_MATCH_1})
+ else ()
+# message(STATUS "unmatched line ${line_match}")
+ string(REGEX MATCH "ifeq \\(\\$\\(([_A-Z]+)\\),[ \t]*([0-9_A-Z]+)\\)" line_match "${makefile_line}")
+ if (NOT "${line_match}" STREQUAL "")
+# message(STATUS "IFEQ: ${line_match} first: ${CMAKE_MATCH_1} second: ${CMAKE_MATCH_2}")
+ if (${${CMAKE_MATCH_1}} STREQUAL ${CMAKE_MATCH_2})
+# message (STATUS "condition is true")
+ set (IfElse 1)
+ else ()
+ set (IfElse 2)
+ endif ()
+ else ()
+ string(REGEX MATCH "ifneq \\(\\$\\(([_A-Z]+)\\),[ \t]*([0-9_A-Z]+)\\)" line_match "${makefile_line}")
+ if (NOT "${line_match}" STREQUAL "")
+# message(STATUS "IFNEQ: ${line_match} first: ${CMAKE_MATCH_1} second: ${CMAKE_MATCH_2}")
+ if (NOT ( ${${CMAKE_MATCH_1}} STREQUAL ${CMAKE_MATCH_2}))
+ message (STATUS "condition is true")
+ set (IfElse 1)
+ else ()
+ set (IfElse 2)
+ endif ()
+ endif ()
+ endif ()
endif ()
endif ()
endforeach ()
