building on gentoo

[ward3r]

Hello
While installing on gentoo using command
pecl install xlswriter

got following errors:
In file included from /tmp/xlswriter/include/minizip/unzip.h:55,
from /tmp/xlswriter/library/libxlsxio/lib/xlsxio_read.c:12:
/tmp/xlswriter/include/minizip/ioapi.h:135:51: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘attribute’ before ‘OF’
135 | typedef voidpf (ZCALLBACK open_file_func) OF((voidpf opaque, const char filename, int mode));
| ^~
/tmp/xlswriter/include/minizip/ioapi.h:136:51: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘attribute’ before ‘OF’
136 | typedef uLong (ZCALLBACK read_file_func) OF((voidpf opaque, voidpf stream, void buf, uLong size));
| ^~

and so on

maybe this is because of macro OF and _Z_OF. but what should i do with this? please help

[ward3r]

resolved by adding
export CFLAGS=' -DOF=_Z_OF'
to /etc/profile