Which definition is right for "ne10_addc_float_c"?

Excuse me for the previous question. I find that it is caused by the generated documentation, which is wrong after I check the on-line documentation.

Now, I have a new question when I build another simple example from the right NE10 documentation:

int main()

{

     ne10_result_t status;

     printf ("Going to initialize NE10...\n");

     status = ne10_init();

     if (status != NE10_OK)

         printf ("NE10 init failed.\n");

     printf ("NE10 has been initialized.\n");

     test_add1();

     test_add2();

     return 0;

}

I find that "

will cause build errors, such as:

robert@M5100:~/workspace_v5_5/NE10_testHardware0$ arm-linux-gnueabihf-gcc -O2 -o sample testHd.c -I$NE10_INC_PATH -l:$NE10_LIB_PATH/libNE10.a

/home/robert/projectNe10-Ne10-4167142/build/modules/libNE10.a(NE10_len.c.o): In function `ne10_len_vec2f_c':

NE10_len.c:(.text+0x5e): undefined reference to `sqrtf'

/home/robert/projectNe10-Ne10-4167142/build/modules/libNE10.a(NE10_len.c.o): In function `ne10_len_vec3f_c':

NE10_len.c:(.text+0xf4): undefined reference to `sqrtf'

/home/robert/projectNe10-Ne10-4167142/build/modules/libNE10.a(NE10_len.c.o): In function `ne10_len_vec4f_c':

NE10_len.c:(.text+0x18c): undefined reference to `sqrtf'

I have no idea on how to solve this. Please help me!

Hi,

I would like to add more information about the problem.

First, the test .c file is from link:

Project Ne10: File List

Its path is:

/home/yang/NE10/NE10_github/Ne10_github_doc/Ne10/samples/NE10_test.c [code]

Second, it generates an error in test_add1 when compiling.

00046 void test_add1 (void)

00047 {

00048  int i;

00049 ne10_float32_t thesrc[5];

00050 ne10_float32_t thecst;

00051 ne10_float32_t thedst[5];

00052

00053  for (i = 0; i < 5; i++)

00054 {

00055 thesrc[i] = (ne10_float32_t) rand() / RAND_MAX * 5.0f;

00056 }

00057 thecst = (ne10_float32_t) rand() / RAND_MAX * 5.0f;

00058

00059  ne10_addc_float (thedst , thesrc, thecst, 5);

00060 }

00061

I have set up the include and library path in the IDE. It seems that it does understand ne10_addc_float in my environment. I originally thought it was a typo. After I changed that to ne10_addcfloat_c, it has the undefined reference errors.

I also have tried command line for building. It has the same errors.

Hi,

Is there a way to check the included functions inside libNE10.a? I try nm with arm-linux-gnueabihf-nm, but it wants .out input file.

Hi,

As the link: Ne10 Library Getting Started, I build NE10 library again with the following commands:

$mkdir build
$cd build
$cmake -DCMAKE_TOOLCHAIN_FILE=../config.cmake ..
$make

The generated library is: libNE10.a. I build my project with commands:

$arm-linux-gnueabihf-ar-gcc –O2 -o sample sample.c  -I$NE10_INC_PATH -l:$NE10_LIB_PATH/libNE10.a

The undefined reference problem is still there.

I find that the generated NE10_test_static can run at the target. After some search, I find NE10_test_static uses the following link command under folder (projectNe10-Ne10-4167142/build/samples/CMakeFiles/NE10_test_static.dir) :

It seems that it uses dynamic library. I have not found any way to generate static NE10 library with many options with (ON or OFF)

LD_LIBRARY_PATH=

Even after the library path variable is removed, the copied NE10_test_static and my project can run. That is, it does not use the hard drive libNE10.a. I am new to Linux and puzzled by the conflicting facts. I have attached the library, the static test applications and link file. Do you think on my drive libNE10.a is static or dynamic library? How to generate a static libNE10 library?

Thanks,

Hi, Ruwan2,

<robert@M5100:~/workspace_v5_5/NE10_testHardware0$ arm-linux-gnueabihf-gcc -O2 -o sample testHd.c -I$NE10_INC_PATH -l:$NE10_LIB_PATH/libNE10.a

<
</home/robert/projectNe10-Ne10-4167142/build/modules/libNE10.a(NE10_len.c.o): In function `ne10_len_vec2f_c':
<
<NE10_len.c:(.text+0x5e): undefined reference to `sqrtf'
<
</home/robert/projectNe10-Ne10-4167142/build/modules/libNE10.a(NE10_len.c.o): In function `ne10_len_vec3f_c':
<
<NE10_len.c:(.text+0xf4): undefined reference to `sqrtf'
<
</home/robert/projectNe10-Ne10-4167142/build/modules/libNE10.a(NE10_len.c.o): In function `ne10_len_vec4f_c':
<
<NE10_len.c:(.text+0x18c): undefined reference to `sqrtf'
<
<I have no idea on how to solve this. Please help me!

you should add -lm when you compile your code

>I find that the generated NE10_test_static can run at the target. After some search, I find NE10_test_static uses the following link command under folder (projectNe10-Ne10-4167142/build/samples/CMakeFiles/NE10_test_static.dir) :

>It seems that it uses dynamic library. I have not found any way to generate static NE10 library with many options with (ON or OFF)

The command you supply is NOT using a dynamic library (refer here: http://gcc.gnu.org/onlinedocs/gcc/Link-Options.html for more details about -rdynamic option), it is static linking. You can find related optiones at line 31 and 32 of Ne10 library's root CMakelists.txt (the top CMakelists.txt).

>Even after the library path variable is removed, the copied NE10_test_static and my project can run. That is, it does not use the hard drive libNE10.a. I am new to Linux and puzzled by the conflicting facts. I have attached the library, the static test applications and link file. Do you think on my drive libNE10.a is static or dynamic library? How to generate a static libNE10 library?

The libNE10.a is static library. *.a is static library under linux, refer more details: http://en.wikipedia.org/wiki/Static_library.