[bug-gawk] Building gawk master fails on Mac OS X: error: conflicting types for 'set_loc', and 'r_fatal'

[Hermann Peifer]

Hi again,

When building on Linux, I am getting some warnings since recently, 
related to conflicting types for 'set_loc' and 'r_fatal'. [1]

When building on the MacBook using /usr/bin/gcc, the warnings turn into 
errors which make make fail. [2]

I got around the issue by using MacPorts gcc version 4.8.3. So there is 
no real problem for me, I just wanted to let you know.

Hermann


[1] Building on Linux

address@hidden:~]> gcc --version | head -1
gcc (Debian 4.4.5-8) 4.4.5

address@hidden:gawk]> make 2>&1 | egrep "warning|note" | sort | uniq -c
     23 awk.h:1257: note: previous implicit declaration of ‘r_fatal’ 
was here
     23 awk.h:1257: note: previous implicit declaration of ‘set_loc’ 
was here
     23 awk.h:1602: warning: conflicting types for ‘set_loc’
     23 awk.h:1603: warning: conflicting types for ‘r_fatal’


[2] Building on Mac OS X

address@hidden:~]> gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr 
--with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix

address@hidden:gawk]> make
make 'CFLAGS=-g -O2 -DNDEBUG' 'LDFLAGS=-L/opt/local/lib' all-recursive
make[1]: Entering directory '/Users/peifer/local/src/gawk'
Making all in .
make[2]: Entering directory '/Users/peifer/local/src/gawk'
gcc -DDEFPATH='".:/Users/peifer/local/share/awk"' 
-DDEFLIBPATH="\"/Users/peifer/local/lib/gawk\"" -DSHLIBEXT="\"so"\" 
-DHAVE_CONFIG_H -DGAWK -DLOCALEDIR='"/Users/peifer/local/share/locale"' 
-I.   -I/opt/local/include  -g -O2 -DNDEBUG -MT array.o -MD -MP -MF 
.deps/array.Tpo -c -o array.o array.c
In file included from array.c:26:
./awk.h:1257:3: warning: implicit declaration of function 'set_loc' is 
invalid in C99 [-Wimplicit-function-declaration]
                fatal("%s:%d: emalloc called with zero bytes", file, line);
                ^
./awk.h:1249:16: note: expanded from macro 'fatal'
#define fatal           set_loc(__FILE__, __LINE__), r_fatal
                        ^
./awk.h:1257:3: warning: implicit declaration of function 'r_fatal' is 
invalid in C99 [-Wimplicit-function-declaration]
./awk.h:1249:45: note: expanded from macro 'fatal'
#define fatal           set_loc(__FILE__, __LINE__), r_fatal
                                                     ^
./awk.h:1602:13: error: conflicting types for 'set_loc'
extern void set_loc (const char *file, int line);
            ^
./awk.h:1257:3: note: previous implicit declaration is here
                fatal("%s:%d: emalloc called with zero bytes", file, line);
                ^
./awk.h:1249:16: note: expanded from macro 'fatal'
#define fatal           set_loc(__FILE__, __LINE__), r_fatal
                        ^
./awk.h:1603:13: error: conflicting types for 'r_fatal'
extern void r_fatal (const char *mesg, ...) ATTRIBUTE_PRINTF_1;
            ^
./awk.h:1257:3: note: previous implicit declaration is here
                fatal("%s:%d: emalloc called with zero bytes", file, line);
                ^
./awk.h:1249:45: note: expanded from macro 'fatal'
#define fatal           set_loc(__FILE__, __LINE__), r_fatal
                                                     ^
2 warnings and 2 errors generated.
Makefile:691: recipe for target 'array.o' failed
make[2]: *** [array.o] Error 1
make[2]: Leaving directory '/Users/peifer/local/src/gawk'
Makefile:735: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/Users/peifer/local/src/gawk'
Makefile:554: recipe for target 'all' failed
make: *** [all] Error 2