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fails to build with musl libc due to use of caddr_t #40

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ncopa opened this issue Oct 28, 2014 · 0 comments · Fixed by #41
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fails to build with musl libc due to use of caddr_t #40

ncopa opened this issue Oct 28, 2014 · 0 comments · Fixed by #41

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@ncopa
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ncopa commented Oct 28, 2014

This happens when trying to build with musl libc on Alpine Linux:

ccache gcc -DNDEBUG -Os -fomit-frame-pointer -Os -fomit-frame-pointer -Os -fomit-frame-pointer -fPIC -I/usr/include/python2.7 -c source/c_gpio/c_gpio.c -o build/temp.linux-i686-2.7/source/c_gpio/c_gpio.o
source/c_gpio/c_gpio.c: In function 'setup':
source/c_gpio/c_gpio.c:82:35: error: 'caddr_t' undeclared (first use in this function)
     gpio_map = (uint32_t *)mmap( (caddr_t)gpio_mem, BLOCK_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED, mem_fd, GPIO_BASE);
                                   ^

the caddr_t should be replaced with void *.
see http://stackoverflow.com/questions/6381526/what-is-the-significance-of-caddr-t-and-when-is-it-used
ncopa added a commit to ncopa/RPIO that referenced this issue Oct 28, 2014
@ncopa
c_gpio: build fix for musl libc
cad829d 
caddr_t is a legacy BSD type which was rejected by the POSIX standard.
Use void * instead.

This solves a build failure with musl libc.

Fixes metachris#40
@ncopa ncopa mentioned this issue Oct 28, 2014
Merged
@bkleef bkleef mentioned this issue Aug 4, 2015
Closed
bkleef added a commit to bkleef/psutil that referenced this issue Aug 4, 2015
@bkleef
Fix giampaolo#664 by compiling on musl libc
998cecc 
See http://stackoverflow.com/questions/6381526/what-is-the-significance-of-caddr-t-and-when-is-it-used and metachris/RPIO#40 for more details.
@bkleef bkleef mentioned this issue Aug 4, 2015
Merged
@2m 2m mentioned this issue Feb 23, 2017
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2m pushed a commit to 2m/RPIO that referenced this issue Oct 3, 2020
@ncopa @2m
c_gpio: build fix for musl libc
3849ab2 
caddr_t is a legacy BSD type which was rejected by the POSIX standard.
Use void * instead.

This solves a build failure with musl libc.

Fixes metachris#40
2m pushed a commit to 2m/RPIO that referenced this issue Oct 3, 2020
@ncopa @2m
c_gpio: build fix for musl libc
7ecb5c8 
caddr_t is a legacy BSD type which was rejected by the POSIX standard.
Use void * instead.

This solves a build failure with musl libc.

Fixes metachris#40
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c_gpio: build fix for musl libc ncopa/RPIO
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