1 files changed, 101 insertions, 0 deletions
diff --git a/CMake/Misc.cmake b/CMake/Misc.cmake
new file mode 100644
index 0000000..8cb18b6
--- /dev/null
+++ b/CMake/Misc.cmake
@@ -0,0 +1,101 @@
+include(CheckCXXCompilerFlag)
+
+# Flatten our header structure
+function(flatify target headers)
+    foreach(header ${headers})
+        get_filename_component(tgt ${header} NAME)
+        configure_file(${header} ${target}/${tgt} COPYONLY)
+    endforeach(header ${headers})
+endfunction()
+
+
+function(add_optional_compile_options flags)
+    foreach(flag ${flags})
+        check_cxx_compiler_flag(-${flag} have-compiler-flag:-${flag})
+        if (have-compiler-flag:-${flag})
+            add_compile_options("-${flag}")
+        endif()
+    endforeach()
+endfunction()
+
+# Substitute vendor references in a file
+function(add_vendor_file)
+    set(options)
+    set(oneValueArgs OUTPUT INPUT MODE)
+    set(multiValueArgs VARIABLES)
+    cmake_parse_arguments(AVF "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+
+    set(in ${CMAKE_CURRENT_SOURCE_DIR}/${AVF_INPUT})
+    set(out ${CMAKE_CURRENT_BINARY_DIR}/${AVF_OUTPUT})
+
+    add_custom_command(
+        OUTPUT ${out}
+        COMMAND ${CMAKE_COMMAND} -DPROJECT_SOURCE_DIR=${PROJECT_SOURCE_DIR}
+                                 "-DVARS=${AVF_VARIABLES}"
+                                 -DCURRENT_VENDOR=${CURRENT_VENDOR}
+                                 -DIN=${in}
+                                 -DOUT=${out}
+                                 -P ${PROJECT_SOURCE_DIR}/CMake/vendor_substitute.cmake
+        COMMAND chmod ${AVF_MODE} ${out}
+        DEPENDS ${in}
+                ${PROJECT_SOURCE_DIR}/doc/apt-verbatim.ent
+                ${PROJECT_SOURCE_DIR}/vendor/${CURRENT_VENDOR}/apt-vendor.ent
+                ${PROJECT_SOURCE_DIR}/vendor/getinfo
+                ${PROJECT_SOURCE_DIR}/CMake/vendor_substitute.cmake
+        VERBATIM
+    )
+
+    # Would like to use ${AVF_OUTPUT} as target name, but then ninja gets
+    # cycles.
+    add_custom_target(vendor-${AVF_OUTPUT} ALL DEPENDS ${out})
+endfunction()
+
+# Add symbolic links to a file
+function(add_links directory target)
+    set(link_names "")
+    foreach(link_name ${ARGN})
+        add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${link_name}
+                           COMMAND ${CMAKE_COMMAND} -E create_symlink ${target} ${CMAKE_CURRENT_BINARY_DIR}/${link_name})
+        list(APPEND link_names ${CMAKE_CURRENT_BINARY_DIR}/${link_name})
+    endforeach()
+
+    STRING(REPLACE "/" "-" target "${target}")
+    add_custom_target(${target}-link_names ALL DEPENDS ${link_names})
+    install(FILES ${link_names} DESTINATION ${directory})
+endfunction()
+
+# Generates a simple version script versioning everything with current SOVERSION
+function(add_version_script target)
+    get_target_property(soversion ${target} SOVERSION)
+    set(script "${CMAKE_CURRENT_BINARY_DIR}/${target}.versionscript")
+    string(REPLACE "-" "" name "${target}_${soversion}")
+    string(TOUPPER "${name}" name)
+    add_custom_command(OUTPUT "${script}"
+                       COMMAND echo "${name} {global: *; };" > "${script}"
+                       VERBATIM )
+    add_custom_target(${target}-versionscript DEPENDS "${script}")
+    target_link_libraries(${target} PRIVATE -Wl,-version-script="${script}")
+    add_dependencies(${target} ${target}-versionscript)
+endfunction()
+
+function(path_join out path1 path2)
+    string(SUBSTRING ${path2} 0 1 init_char)
+    if ("${init_char}" STREQUAL "/")
+        set(${out} "${path2}" PARENT_SCOPE)
+    else()
+        set(${out} "${path1}/${path2}" PARENT_SCOPE)
+    endif()
+endfunction()
+
+# install_empty_directories(path ...)
+#
+# Creates empty directories in the install destination dir. Paths may be
+# absolute or relative; in the latter case, the value of CMAKE_INSTALL_PREFIX
+# is prepended.
+function(install_empty_directories)
+    foreach(path ${ARGN})
+        path_join(full_path "${CMAKE_INSTALL_PREFIX}" "${path}")
+        INSTALL(CODE "MESSAGE(STATUS \"Creating directory: \$ENV{DESTDIR}${full_path}\")"
+                CODE "FILE(MAKE_DIRECTORY \$ENV{DESTDIR}${full_path})")
+    endforeach()
+endfunction()