[Scons-users] Small troubles while trying simple scons build for my project

[Steven Truppe]

I made the example as simple as possible, i hope someone can help me out 
here...


On 2016-09-18 04:41, William Blevins wrote:
> Steven,
>
> It appears that the program "TestError" needs to be linked against the 
> library "error". You forgot to set the linking flags LIBS and/or LIBPATH.
>
> http://scons.org/doc/production/HTML/scons-user.html#idp1396575996
>
> V/R,
> William
>
> On Sat, Sep 17, 2016 at 10:10 PM, Steven Truppe 
> <steven.truppe at chello.at <mailto:steven.truppe at chello.at>> wrote:
>
>
>
>     On 2016-09-18 03:52, Steven Truppe wrote:
>>
>>
>>     On 2016-09-18 03:32, Steven Truppe wrote:
>>>     Hi everyone, i've a small question and i solved it before but
>>>     then stuck again: here is my file structure:
>>>     /bin
>>>     /docs
>>>     /src
>>>     /src/MainApp.c
>>>     /intern
>>>     /intern/Error/Error.h
>>>     /intern/Error/Error.c
>>>     /intern/Error/TestError.c
>>>     /intern/Error/SConscript
>>>     SConstruct
>>>     It should be a very simple setup to create my build system for a
>>>     larger project i'm working on.
>>>     the SConstruct file looks like this:
>
>     import os
>     env = Environment(
>      ENV = os.environ,
>      CPPPATH = "intern/"
>     )
>     Export("env")
>     env.SConscript(r'intern/Error/SConscript',
>     variant_dir=r'#build/Error/', duplicate=0)
>
>
>     And the SConscript file looks like:
>
>         Import("env")
>         env.Library("error", "Error.c")
>         env.Program("TestError", ["TestError.c"])
>
>
>
>     Error.h:
>
>         #ifndef ERROR_HEADER
>         #define ERROR_HEADER
>
>
>         void err_hello(void);
>         void err_message(char *message);
>
>
>         #endif
>
>
>     Error.c:
>
>         #include "Error.h"
>
>         #include <stdio.h>
>
>
>         void err_hello(){
>             printf("HEllO");
>         }
>
>         void err_message(char *message) {
>             printf("Error: '%s' in file %i on line %i in file %s",
>         &message, __LINE__, __FILE__, __func__);
>
>
>     And finaly the TestError.c file:
>
>         #include "Error.h"
>
>         int main(int argc, char **argv) {
>             err_hello();
>             err_message("This is an error message");
>
>             return(0);
>         }
>
>
>
>
>
>>>     So far so good, now my problem is that i get this error message
>>>     when i try to compile:
>>
>>>     gcc -o build/Error/Error.o -c -Ibuild/Error/intern
>>>     -Iintern/Error/intern intern/Error/Error.c
>>>     gcc -o build/Error/TestError.o -c -Ibuild/Error/intern
>>>     -Iintern/Error/intern intern/Error/TestError.c
>>>     gcc -o build/Error/TestError build/Error/TestError.o
>>>     build/Error/TestError.o: In function `main':
>>>     TestError.c:(.text+0x10): undefined reference to `err_hello'
>>>     TestError.c:(.text+0x1a): undefined reference to `err_message'
>>>     collect2: error: ld returned 1 exit status
>>>     scons: *** [build/Error/TestError] Error 1
>>>     I had the same issue when used a .cpp file in my project but
>>>     that's now only c so i have no clue... can someone look at the
>>>     code and help me a bit out here, it would would be a great help!
>>>
>>>
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>>
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