debian/rules: remove the -Wl,--as-needed linker flag

[libam7xxx.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index aee9581..cb1272c 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,17 +5,21 @@ set(PROJECT_DESCRIPTION
   "Communication library for Actions Micro AM7XXX based USB projectors and DPFs")
 
 set(PROJECT_VER_MAJOR 0)
-set(PROJECT_VER_MINOR 0)
-set(PROJECT_VER_PATCH 1)
+set(PROJECT_VER_MINOR 1)
+set(PROJECT_VER_PATCH 5)
 set(PROJECT_VER_EXTRA "")
 set(PROJECT_VER
   "${PROJECT_VER_MAJOR}.${PROJECT_VER_MINOR}.${PROJECT_VER_PATCH}${PROJECT_VER_EXTRA}")
 set(PROJECT_APIVER
   "${PROJECT_VER_MAJOR}.${PROJECT_VER_MINOR}")
 
-set(CMAKE_MODULE_PATH 
+set(CMAKE_MODULE_PATH
   ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules/")
 
+OPTION(STRICT_COMPILATION_CHECKS "Enable stricter compilation checks" OFF)
+
+include (MaintenanceTools)
+
 set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
 set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR}/lib)
 set(DOC_OUTPUT_PATH ${CMAKE_BINARY_DIR}/doc)
@@ -27,22 +31,18 @@ macro(add_flags var)
   set(${var} "${${var}} ${_flags}")
 endmacro(add_flags)
 
-if (CMAKE_COMPILER_IS_GNUCC)
+string(REGEX MATCH "clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER}")
+
+if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
   add_definitions(-Wall)
 
   # let CFLAGS env override this
   if(CMAKE_C_FLAGS STREQUAL "")
-    set(CMAKE_C_FLAGS "-std=c99 -pedantic -Wall -Wextra -O2")
+    set(CMAKE_C_FLAGS "-std=c99 -pedantic -Wall -Wextra")
   endif()
 
-  # Don't make pedantic checks errors,
-  # as vanilla libusb-1.0.8 can't live with that
-  #add_flags(CMAKE_C_FLAGS -pedantic-errors)
-
-  # GCC >= 4.6
-  #add_flags(CMAKE_C_FLAGS -Wunused-but-set-variable)
-
   add_flags(CMAKE_C_FLAGS
+    -fvisibility=hidden
     -fno-common
     -Wall
     -Wextra
@@ -50,7 +50,6 @@ if (CMAKE_COMPILER_IS_GNUCC)
     -Winit-self
     -Winline
     -Wpacked
-    -Wp,-D_FORTIFY_SOURCE=2
     -Wpointer-arith
     -Wlarger-than-65500
     -Wmissing-declarations
@@ -66,40 +65,50 @@ if (CMAKE_COMPILER_IS_GNUCC)
     -Wswitch-enum
     -Wundef
     -Wunreachable-code
-    -Wunsafe-loop-optimizations
     -Wwrite-strings
-    -fstack-protector
+    -fstack-protector)
+
+  add_flags(DEBUG_FLAGS
+    -ggdb)
+
+  add_flags(RELEASE_FLAGS
+    -Wp,-D_FORTIFY_SOURCE=2)
+
+  if (STRICT_COMPILATION_CHECKS)
+    add_flags(STRICT_FLAGS
+      -Werror
+      # sign conversion warnings can be very noisy for a very little gain
+      #-Wsign-conversion
+      # NOTE: Vanilla libusb-1.0.8 can't live with -pedantic-errors
+      -pedantic-errors)
+
+  endif()
+endif()
+
+if (CMAKE_COMPILER_IS_GNUCC)
+  add_flags(CMAKE_C_FLAGS
+    -Wunsafe-loop-optimizations
     --param=ssp-buffer-size=4)
+
+  if (STRICT_COMPILATION_CHECKS)
+    add_flags(STRICT_FLAGS
+      # NOTE: GCC >= 4.6 is needed for -Wunused-but-set-variable
+      -Wunused-but-set-variable)
+  endif()
 endif()
 
-set(CMAKE_C_FLAGS_DEBUG "-g -DDEBUG=1 -Werror")
-set(CMAKE_C_FLAGS_RELEASE "-O2")
-set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 -g")
-
-# Use git for some maintainance tasks
-find_package(Git)
-if(GIT_FOUND)
-  set(ARCHIVE_PREFIX ${CMAKE_PROJECT_NAME}-${PROJECT_VER})
-  find_program(DATE_EXECUTABLE date DOC "date command line program")
-  if (DATE_EXECUTABLE)
-    message(STATUS "Found date: " ${DATE_EXECUTABLE})
-    message(STATUS "Generator is: " ${CMAKE_GENERATOR})
-
-    # XXX: using $(shell CMD) works only with Unix Makefile
-    if (CMAKE_GENERATOR STREQUAL "Unix Makefiles")
-      message(STATUS " - \"git archive\" will use the date too!")
-      set(ARCHIVE_PREFIX ${ARCHIVE_PREFIX}-$\(shell ${DATE_EXECUTABLE} +%Y%m%d%H%M\))
-    endif()
+if (CMAKE_COMPILER_IS_CLANG)
+  if (STRICT_COMPILATION_CHECKS)
+    add_flags(STRICT_FLAGS
+      -Wshorten-64-to-32)
   endif()
-  add_custom_target(archive
-    COMMAND ${GIT_EXECUTABLE} archive -o \"${ARCHIVE_PREFIX}.tar.gz\" --prefix=\"${ARCHIVE_PREFIX}/\" HEAD
-    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
+endif()
 
-  add_custom_target(changelog
-    COMMAND ${GIT_EXECUTABLE} log --pretty=\"format:%ai  %aN  <%aE>%n%n%x09* %s%d%n\" > ChangeLog
-    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
-endif(GIT_FOUND)
+set(CMAKE_C_FLAGS_DEBUG "-O0 -DDEBUG=1 ${DEBUG_FLAGS} ${STRICT_FLAGS}")
+set(CMAKE_C_FLAGS_RELEASE "-O2 ${RELEASE_FLAGS} ${STRICT_FLAGS}")
+set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 ${RELEASE_FLAGS} ${DEBUG_FLAGS} ${STRICT_FLAGS}")
 
 # Add library project
 add_subdirectory(src)
+add_subdirectory(examples)
 add_subdirectory(doc)