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在我添加柠檬分析器之前，我的程序曾经用OpenBSD编译过。现在它编译在Linux上，但在OpenBSD上，我得到一个我不明白的错误。为什么我不能用OpenBSD编译？
$ cmake ..
-- The C compiler identification is GNU 4.2.1
-- The CXX compiler identification is GNU 4.2.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/dac/test/openshell/build
$ make
Scanning dependScanning dependencies of target shell
[ 28%] Building C object CMakeFiles/shell.dir/main.c.o
/home/dac/test/openshell/main.c: In function 'main':
/home/dac/test/openshell/main.c:788: warning: implicit declaration of function 'add_history'
/home/dac/test/openshell/main.c: In function 'command':
/home/dac/test/openshell/main.c:573: warning: passing argument 1 of 'expandVariable' discards qualifiers from pointer target type
cc: -ledit: linker input file unused because linking not done
cc: -lncurses: linker input file unused because linking not done
cc: -lcurses: linker input file unused because linking not done
cc: -ltermcap: linker input file unused because linking not done
[ 42%] Building C object CMakeFiles/shell.dir/shellparser.c.o
/home/dac/test/openshell/shellparser.c:280: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:288: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:288: error: initializer element is not constant
/home/dac/test/openshell/shellparser.c:288: error: (near initialization for 'yyRuleName[0]')
/home/dac/test/openshell/shellparser.c: In function 'yy_destructor':
/home/dac/test/openshell/shellparser.c:370: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:370: warning: statement with no effect
/home/dac/test/openshell/shellparser.c: In function 'yyStackOverflow':
/home/dac/test/openshell/shellparser.c:551: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:551: warning: statement with no effect
/home/dac/test/openshell/shellparser.c: At top level:
/home/dac/test/openshell/shellparser.c:609: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:609: warning: missing braces around initializer
/home/dac/test/openshell/shellparser.c:609: warning: (near initialization for 'yyRuleInfo[0]')
/home/dac/test/openshell/shellparser.c:609: error: initializer element is not constant
/home/dac/test/openshell/shellparser.c:609: error: (near initialization for 'yyRuleInfo[0].lhs')
/home/dac/test/openshell/shellparser.c: In function 'yy_reduce':
/home/dac/test/openshell/shellparser.c:664: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:664: warning: statement with no effect
/home/dac/test/openshell/shellparser.c: In function 'yy_parse_failed':
/home/dac/test/openshell/shellparser.c:710: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:710: warning: statement with no effect
/home/dac/test/openshell/shellparser.c: In function 'yy_syntax_error':
/home/dac/test/openshell/shellparser.c:726: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:726: warning: statement with no effect
/home/dac/test/openshell/shellparser.c: In function 'yy_accept':
/home/dac/test/openshell/shellparser.c:745: error: expected expression before '%' token
/home/dac/test/openshell/shellparser.c:745: warning: statement with no effect
/home/dac/test/openshell/shellparser.c: At top level:
/home/dac/test/openshell/shellparser.c:918: error: expected identifier or '(' before string constant
/home/dac/test/openshell/shellparser.c:929: error: expected identifier or '(' before ',' token
为什么会发生，我该怎么办呢？我忘了包括图书馆吗？我cmake的文件是
cmake_minimum_required(VERSION 3.0)
project(shell.test)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -L/usr/local/include/ -L/usr/include -std=c99 -pedantic -O3 -g -Wall -pedantic -ledit -lncurses -lcurses -ltermcap")
include_directories(/usr/local/include/ /usr/include)
link_directories(/usr/lib)
link_directories(/usr/local/lib)
add_executable(shell main.c shellparser.c errors.c util.c)
target_link_libraries(shell edit readline)
add_custom_target(shellparser DEPENDS ${CMAKE_SOURCE_DIR}/shellparser.c)
add_custom_command(OUTPUT ${CMAKE_SOURCE_DIR}/shellparser.c COMMAND lemon -s ${CMAKE_SOURCE_DIR}/shellparser.y DEPENDS ${CMAKE_SOURCE_DIR}/shellparser.y)
add_dependencies(shell shellparser)
set_property(TARGET shell PROPERTY C_STANDARD 99)$
在Ubuntu上我可以成功地建立它：
$ git clone http://github.com/montao/openshell
Cloning into 'openshell'...
remote: Counting objects: 1439, done.
remote: Compressing objects: 100% (184/184), done.
remote: Total 1439 (delta 124), reused 0 (delta 0), pack-reused 1255
Receiving objects: 100% (1439/1439), 405.08 KiB | 117.00 KiB/s, done.
Resolving deltas: 100% (973/973), done.
Checking connectivity... done.
[email protected]:~/montao/test$ cd openshell/
[email protected]:~/montao/test/openshell$ mkdir build
[email protected]:~/montao/test/openshell$ cd build/
[email protected]:~/montao/test/openshell/build$ cmake ..
-- The C compiler identification is GNU 5.3.1
-- The CXX compiler identification is GNU 5.3.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/dac/montao/test/openshell/build
[email protected]:~/montao/test/openshell/build$ make
Scanning dependencies of target shellparser
[ 14%] Generating ../shellparser.c
Parser statistics:
terminal symbols................... 9
non-terminal symbols............... 3
total symbols...................... 12
rules.............................. 8
states............................. 14
conflicts.......................... 0
action table entries............... 32
total table size (bytes)........... 100
[ 14%] Built target shellparser
Scanning dependencies of target shell
[ 28%] Building C object CMakeFiles/shell.dir/main.c.o
/home/dac/montao/test/openshell/main.c: In function ‘free_pipeline’:
/home/dac/montao/test/openshell/main.c:337:6: note: the ABI of passing struct with a flexible array member has changed in GCC 4.4
void free_pipeline(struct pipeline pipe) {
^
[ 42%] Building C object CMakeFiles/shell.dir/shellparser.c.o
[ 57%] Building C object CMakeFiles/shell.dir/errors.c.o
[ 71%] Building C object CMakeFiles/shell.dir/util.c.o
/home/dac/montao/test/openshell/util.c: In function ‘make_args’:
/home/dac/montao/test/openshell/util.c:1100:52: warning: operation on ‘jc’ may be undefined [-Wsequence-point]
char *str = concat((char *) *retArgv[jc++], (char *) *retArgv[jc]);
^
/home/dac/montao/test/openshell/util.c:1100:19: warning: unused variable ‘str’ [-Wunused-variable]
char *str = concat((char *) *retArgv[jc++], (char *) *retArgv[jc]);
^
[ 85%] Linking C executable shell
[100%] Built target shell
不管我做什么，错误的是那里当我在OpenBSD编译。我尝试了一切。
显然，至少知道一个或两个在openBSD上编译器失败的行实际上是有帮助 –
@MarcusMüller我终于可以编译它，如果我使用cmake柠檬然后制作。根据我的调用方式，柠檬会从'shellparser.y'生成不同的'shellparser.c'。我不确定细节，但至少我现在可以建立这个项目:-) – Montao
如果你不添加答案，你并不真正帮助任何人（你可以自我回答问题，非常感谢在SO！）并解释你做了什么，并且实际显示不同的文件！除此之外，你的问题对未来的读者毫无价值：（ –