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macOS compile errors

Dunno if you care about making this macOS compatible... but compiling with clang on macOS 12.2 with Apple Xcode command line tools I get this:

lisp9-ctarbide e% make
gcc -m32 -ggdb3 -O2 -std=c99 -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Wconversion -Wdeclaration-after-statement -Wno-unused-parameter -pedantic -Werror -c ls9.c
size_t_aux.nw:71:9: error: 'SSIZE_MAX' macro redefined [-Werror,-Wmacro-redefined]
#define SSIZE_MAX       INT_MAX
        ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/i386/limits.h:96:9: note: previous definition is here
#define SSIZE_MAX       LONG_MAX        /* max value for a ssize_t */
        ^
ls9-reader.nw:274:17: error: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'int' [-Werror,-Wsign-conversion]
        while (isdigit(c)) {
               ~~~~~~~ ^
ls9-vm.nw:425:17: error: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'int' [-Werror,-Wsign-conversion]
                Acc = isalpha(charval(Acc))? TRUE: NIL;
                      ~~~~~~~ ^~~~~~~~~~~~
ls9-types.nw:51:21: note: expanded from macro 'charval'
#define charval(n) (cadr(n))
                    ^~~~~~~
ls9-macros.nw:8:26: note: expanded from macro 'cadr'
#define cadr(x)         (Car[Cdr[x]])
                         ^~~~~~~~~~~
ls9-vm.nw:566:17: error: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'int' [-Werror,-Wsign-conversion]
                Acc = islower(charval(Acc))? TRUE: NIL;
                      ~~~~~~~ ^~~~~~~~~~~~
ls9-types.nw:51:21: note: expanded from macro 'charval'
#define charval(n) (cadr(n))
                    ^~~~~~~
ls9-macros.nw:8:26: note: expanded from macro 'cadr'
#define cadr(x)         (Car[Cdr[x]])
                         ^~~~~~~~~~~
ls9-vm.nw:598:17: error: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'int' [-Werror,-Wsign-conversion]
                Acc = isdigit(charval(Acc))? TRUE: NIL;
                      ~~~~~~~ ^~~~~~~~~~~~
ls9-types.nw:51:21: note: expanded from macro 'charval'
#define charval(n) (cadr(n))
                    ^~~~~~~
ls9-macros.nw:8:26: note: expanded from macro 'cadr'
#define cadr(x)         (Car[Cdr[x]])
                         ^~~~~~~~~~~
ls9-vm.nw:710:17: error: implicit conversion changes signedness: 'size_t' (aka 'unsigned long') to 'int' [-Werror,-Wsign-conversion]
                Acc = isupper(charval(Acc))? TRUE: NIL;
                      ~~~~~~~ ^~~~~~~~~~~~
ls9-types.nw:51:21: note: expanded from macro 'charval'
#define charval(n) (cadr(n))
                    ^~~~~~~
ls9-macros.nw:8:26: note: expanded from macro 'cadr'
#define cadr(x)         (Car[Cdr[x]])
                         ^~~~~~~~~~~
6 errors generated.
make: *** [ls9.o] Error 1

There are also over 100 warnings(?) from cproto when trying to parse macOS header files, tripping over intrinsics like __asm and __compar. These might be harmless since the files ls9_protos.h and ls9.c are generated.

It looks like SSIZE_MAX comes from size_t_aux.nw where perhaps an#ifndef SSIZE_MAX would help. I added these in ls9.c to test that, and added some (int ) casts for charval used with is.... character functions and the compile succeeded.

The link failed since macOS no longer supports i386 mode. So I modified the Makefile to use WIDTH = -m64 and the build completed.

lisp9-ctarbide e% make    
gcc -m64 -ggdb3 -O2 -std=c99 -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Wconversion -Wdeclaration-after-statement -Wno-unused-parameter -pedantic -Werror -c ls9.c
gcc -m64 -ggdb3 -O2 -std=c99 -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Wconversion -Wdeclaration-after-statement -Wno-unused-parameter -pedantic -Werror -o ls9 ls9.o
CHMOD='chmod 0555' NOFAKE='tools/nofake' tools/nofake.sh -Rdump-image.sh \
		ls9.nw ls9-scripts.nw -odump-image.sh
Generate "dump-image.sh".
./dump-image.sh
All basic assertions passed!
t
lisp9-ctarbide e%

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