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make[1]: Entering directory `/opt/local/var/macports/build/_Users_runner_work_macports-ports_macports-ports_ports_lang_mosml/mosml-dynlibs/work/mosml-13c581aec46eea134e478f2e2b6456278e36ecce/src/dynlibs/mgd'
/opt/local/var/macports/build/_Users_runner_work_macports-ports_macports-ports_ports_lang_mosml/mosml-dynlibs/work/compwrap/cc/usr/bin/clang -Dunix -O2 -fno-defer-pop -fPIC -I/opt/local/include/mosml -I/opt/local/include -c -o mgd.o mgd.c
clang: warning: optimization flag '-fno-defer-pop' is not supported [-Wignored-optimization-argument]
mgd.c:82:5: error: call to undeclared function 'failwith'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
failwith("Could not create image");
^
mgd.c:96:5: error: call to undeclared function 'failwith'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
failwith("Cannot open PNG file for input");
^
mgd.c:112:5: error: call to undeclared function 'failwith'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
failwith("Cannot open PNG file for output");
^
mgd.c:127:3: error: call to undeclared function 'flush'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
flush(stdout);
^
mgd.c:127:3: note: did you mean 'fflush'?
/Library/Developer/CommandLineTools/SDKs/MacOSX13.sdk/usr/include/stdio.h:146:6: note: 'fflush' declared here
int fflush(FILE *);
^
mgd.c:167:3: error: call to undeclared function 'modify'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
modify(&Field(res, 0), Val_long(color));
^
mgd.c:184:10: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
{ return Val_long(gdTransparent); }
^~~~~~~~~~~~~~~~~~~~~~~
/opt/local/include/mosml/mlvalues.h:63:37: note: expanded from macro 'Val_long'
#define Val_long(x) (((long)(x) << 1) + 1)
~~~~~~~~~ ^
mgd.c:189:10: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
{ return Val_long(gdBrushed); }
^~~~~~~~~~~~~~~~~~~
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