Compiling and Installing SOAPdenovo

Procedure

Use PuTTY to log in to the server as the root user.
Go to the SOAPdenovo directory.
```
cd /path/to/SOAPDENOVO
```
Decompress SOAPdenovo2-r241.tar.gz.
```
tar -xvf SOAPdenovo2-r241.tar.gz
```
Go to the directory generated after the decompression.
```
cd SOAPdenovo2-r241
```

Modify the standardPregraph/hashFunction.c file.

Open standardPregraph/hashFunction.c.
```
vi standardPregraph/hashFunction.c
```

Press i to enter the insert mode and modify the file as follows:

Before the modification:

static uint32_t cpuid ( uint32_t functionInput )
{
uint32_t eax;
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
#ifdef __PIC__
asm ( "pushl %%ebx\n\t" /* save %ebx */
"cpuid\n\t"
"movl %%ebx, %[ebx]\n\t" /* save what cpuid just put in %ebx */
"popl %%ebx" : "=a" ( eax ), [ebx] "=r" ( ebx ), "=c" ( ecx ), "=d" ( edx ) : "a" ( functionInput )
: "cc" );
#else
asm ( "cpuid" : "=a" ( eax ), "=b" ( ebx ), "=c" ( ecx ), "=d" ( edx ) : "a" ( functionInput ) );
#endif
return ecx;
}

After the modification:

static uint32_t cpuid ( uint32_t functionInput )
{
uint32_t eax;
uint32_t ebx;
uint32_t ecx;
uint32_t edx;

#ifdef __aarch64__
ecx = 0x0;
#else
#ifdef __PIC__
asm ( "pushl %%ebx\n\t" /* save %ebx */
"cpuid\n\t"
"movl %%ebx, %[ebx]\n\t" /* save what cpuid just put in %ebx */
"popl %%ebx" : "=a" ( eax ), [ebx] "=r" ( ebx ), "=c" ( ecx ), "=d" ( edx ) : "a" ( functionInput )
: "cc" );
#else
asm ( "cpuid" : "=a" ( eax ), "=b" ( ebx ), "=c" ( ecx ), "=d" ( edx ) : "a" ( functionInput ) );
#endif
#endif
return ecx;
}

Press Esc, type :wq!, and press Enter to save the file and exit.

Perform the compilation.
```
make
```
Test the SOAPdenovo environment.
```
./SOAPdenovo-63mer
```
If the following information is displayed, the environment is normal.

Parent topic: SOAPdenovo r241 Porting Guide (CentOS 7.6)