The standard SDCC and GPUTILS packages does not support PIC microcontrollers, unlike their counterpart on Windows.

To provide them you have to install from the sources. Here's a quick guide on Linux Mint/XFCE 22.3

First Step: Install missing libraries and tools

sudo apt-get update
sudo apt-get install bison flex zlib1g-dev libboost-dev libboost-graph-dev 

Second Step: Download GPUTILS source from https://sourceforge.net/projects/gputils/files/

Create a temporary directory then unpack the sources

cd ~
mkdir tmp1
tar xjf /...path..to...source.../gputils-1.5.2.tar.bz2

 Enter the sources directory, then configure, compile and install 

cd tmp1/gputils-1.5.2/
./configure
make
sudo make install

Third Step: Download  SDCC source from https://sourceforge.net/projects/sdcc/files/
Create a temporary directory then unpack the sources

cd ~
mkdir tmp2
tar xjf /...path..to..source.../sdcc-src-4.5.0.tar.bz2

 Enter the sources directory, then configure, compile and install 

cd tmp2/sdcc-4.5.0/
./configure
make
sudo make install 

It will take forever, but when it finishes, check if the binary was propely installed

cd ~
sdcc -v

 The compiler shall respond with the architectures it support:

SDCC : mcs51/z80/z180/r2k/r2ka/r3ka/sm83/tlcs90/ez80_z80/z80n/r800/ds390/pic16/pic14/TININative/ds400/hc08/s08/stm8/pdk13/pdk14/pdk15/mos6502/mos65c02/f8 TD- 4.5.0 #15242 (Linux)
published under GNU General Public License (GPL)

The final test is to compile a test program with following command line

sdcc -mpic14 -p16f88 --use-non-free teste.c

Test program

#include <pic16f88.h>

// Configurações do Microcontrolador (Fuses)
// Oscilador interno, Watchdog desligado, Master Clear habilitado
unsigned int __at(0x2007) CONFIG1 = _INTRC_IO & _WDT_OFF & _MCLR_ON & _LVP_OFF;

void delay(unsigned int tempo) {
    unsigned int i, j;
    for(i = 0; i < tempo; i++)
        for(j = 0; j < 100; j++); // Atraso simples
}

void main(void) {
    // Configura o oscilador interno para 8 MHz
    OSCCON = 0x70; 

    // Configura RB0 como saída digital
    TRISB = 0xFE; // 1111 1110 (0 = saída)
    PORTB = 0x00; // Inicia todos os pinos em nível baixo

    while(1) {
        RB0 = 1; // Liga o LED no pino 6 (RB0)
        delay(500);
        RB0 = 0; // Desliga o LED
        delay(500);
    }
}

The compilation may generate some warnings but at the end the .hex is generated with success.