add_library 处理有瑕疵

[laiall]

chenbin，您好。

在使用cpputils-cmake的过程中发现，对于如下示例工程，打开 test.cc 后会显示 test.h file not found，使用的是flycheck

mkdir -p test/include test/src;

echo "cmake_minimum_required(VERSION 2.8)
project(Test)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
include_directories(${PROJECT_SOURCE_DIR}/include)
add_subdirectory(src)" > test/CMakeLists.txt ;

echo "add_library(test test)" > test/src/CMakeLists.txt

echo "#include "test.h"" > test/src/test.cc;

touch test/include/test.h

debug 信息如下

cppcm-reload-all called
cppcm-get-dirs called
cppcm-query-var-from-last-matched-line called 2 times=(t nil /home/ruizhi/test/build/debug/ /home/ruizhi/test) [2 times]
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test /home/ruizhi/test/build/debug/
CMakeLists.txt=/home/ruizhi/test/CMakeLists.txt
possible-targets=nil
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/CMakeFiles /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/CMakeFiles/2.8.11 /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/CMakeFiles/2.8.11/CompilerIdC /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/CMakeFiles/2.8.11/CompilerIdCXX /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/CMakeFiles/CMakeTmp /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/lib /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/src /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/src/CMakeFiles /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/build/debug/src/CMakeFiles/test.dir /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/include /home/ruizhi/test/build/debug/
cppcm-scan-info-from-cmake called => /home/ruizhi/test /home/ruizhi/test/src /home/ruizhi/test/build/debug/
CMakeLists.txt=/home/ruizhi/test/src/CMakeLists.txt
possible-targets=((add_library test))
cppcm-handle-one-executable called => /home/ruizhi/test /home/ruizhi/test/build/debug/ /home/ruizhi/test/src (add_library test)
cppcm--guess-dir-containing-cmakelists-dot-txt called => /home/ruizhi/test/src
cppcm--guess-dir-containing-cmakelists-dot-txt: dir=/home/ruizhi/test/src
flag-make=/home/ruizhi/test/build/debug/src/CMakeFiles/test.dir/flags.make
cppcm-proj-max-dir-level called => /home/ruizhi/test/build/debug/src/ (add_library test)
cppcm-guess-exe-full-path: type=add_library
cppcm-guess-exe-full-path: tgt=(add_library test)
cppcm-guess-exe-full-path: exe-dir=/home/ruizhi/test/build/debug/src/
cppcm-guess-exe-full-path: cppcm-cmake-target-regex=^ [^#] *(add_executable|add_library) *( *([^ ]+)
cppcm-guess-exe-full-path: base-exe-name=/home/ruizhi/test/build/debug/src/libtest
cppcm--find-physical-lib-file called => /home/ruizhi/test/build/debug/src/libtest
cppcm--find-physical-lib-file return =nil
exe-full-path=nil
cppcm-set-c-flags-current-buffer called
cppcm--guess-dir-containing-cmakelists-dot-txt called => nil
cppcm--guess-dir-containing-cmakelists-dot-txt: dir=/home/ruizhi/test/src/
c-compiling-flags-list=nil
cppcm-include-dirs=(-I"/home/ruizhi/test/src/" -I"/home/ruizhi/test/src/" -I"/home/ruizhi/test/src/")
ac-clang-flags=(-I/home/ruizhi/test/src/ -I/home/ruizhi/test/src/ -I/home/ruizhi/test/src/)
company-clang-arguments=(-I/home/ruizhi/test/src/ -I/home/ruizhi/test/src/ -I/home/ruizhi/test/src/)
flycheck-clang-include-path=(/home/ruizhi/test/src/ /home/ruizhi/test/src/ /home/ruizhi/test/src/)
flycheck-clang-definitions=nil
company-c-headers-path-system=(/home/ruizhi/test/src/ /home/ruizhi/test/src/ /home/ruizhi/test/src/)

cppcm-hash is a variable defined in `cpputils-cmake.el'.
Its value is #s(hash-table size 65 test equal rehash-size 1.5 rehash-threshold 0.8 data
())

Documentation:
Not documented as a variable.

cppcm-version
0.5.2

emacs --version 24.5.1
cmake --version 2.8.11

[redguardtoo]

content of flags.make?

[laiall]

CMAKE generated file: DO NOT EDIT!

Generated by "Unix Makefiles" Generator, CMake Version 2.8

compile CXX with /usr/bin/c++

CXX_FLAGS = -g -I/home/ruizhi/test/include

CXX_DEFINES =

[redguardtoo]

flycheck version?

[laiall]

Flycheck version: 0.26snapshot (package: 20160208.706)

[redguardtoo]

flycheck works fine, stick to stable version 0.25.1.

M-x cppcm-reload-all then C-h v flycheck-clang-include-path. You should see list of strings in that flag.

As said in README, you need compile your program at least once to make sure your binary is compiled out.

[laiall]

我个人感觉这个问题可能不是在 flycheck 上，从上面的debug info 中看
cppcm-include-dirs=(-I"/home/ruizhi/test/src/" -I"/home/ruizhi/test/src/" -I"/home/ruizhi/test/src/")
我的理解中就是说，cppcm-reload-all 后，没有把/home/ruizhi/test/include 放进include-dirs，不知道这么理解是否正确

flycheck-clang-include-path 是 （"/home/ruizhi/test/src/" "/home/ruizhi/test/src"）

同时对上述示例工程进行
mkdir build;
cd build;
cmake ..;
make;
是能够将工程编译成功，在build/lib 目录下，能看到目标的lib文件

另外就我自己的尝试来说，有一些重现的条件是在cmake文件中要有如下三句设置
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
同时如果工程当中有 add_executable 的话，先打开 executable 相关cc文件后，再打开library的cc文件就能正确识别出 /home/ruizhi/test/include 的路径，相当于不能识别出 include 路径只是在很少的情形下出现。

感谢您的耐心回复：）

[redguardtoo]

send a complete project to my mail chenbin.sh AT gmail