M4 1.4 doesn't build on mingw

[Patrick Farry]

On mingw signal.h is in include directory. Build looks for it in sys/signal.h

 

Version of mingw - mingw-w64/i686-8.1.0-posix-dwarf-rt_v6-rev0

Windows 10 version 1803

 

Stack overflow link to issue https://stackoverflow.com/questions/22601045/make-cant-find-sys-signal-h

 

I copied signal.h into sys and the build ran and m4 seems to run fine.

 

To reproduce with mingw installed:

 

1. Download M4 source
2. ./configure
3. make

 

$ make

for subdir in doc lib src checks examples; do \

  echo making all in $subdir; \

  (cd $subdir && make CC='gcc' CFLAGS='-g -O' LDFLAGS='' LIBS='' prefix='/usr/local' exec_prefix='/usr/local' bindir='/usr/local/bin' infodir='/usr/local/info' all) || exit 1; \

done

making all in doc

make[1]: Entering directory 'C:/Program Files/Git/usr/local/m4-1.4/doc'

make[1]: Nothing to be done for 'all'.

make[1]: Leaving directory 'C:/Program Files/Git/usr/local/m4-1.4/doc'

making all in lib

make[1]: Entering directory 'C:/Program Files/Git/usr/local/m4-1.4/lib'

gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O regex.c

gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O getopt.c

getopt.c: In function '_getopt_internal':

getopt.c:408:30: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration]

      if (optind != argc && !strcmp (argv[optind], "--"))

                              ^~~~~~

getopt.c:484:7: warning: implicit declaration of function 'strncmp' [-Wimplicit-function-declaration]

  if (!strncmp (p->name, nextchar, nameend - nextchar))

       ^~~~~~~

getopt.c:486:32: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]

      if (nameend - nextchar == strlen (p->name))

                                ^~~~~~

getopt.c:486:32: warning: incompatible implicit declaration of built-in function 'strlen'

getopt.c:486:32: note: include '<string.h>' or provide a declaration of 'strlen'

getopt.c:77:1:

+#include <string.h>

 

getopt.c:486:32:

      if (nameend - nextchar == strlen (p->name))

                                ^~~~~~

getopt.c:510:16: warning: incompatible implicit declaration of built-in function 'strlen'

    nextchar += strlen (nextchar);

                ^~~~~~

getopt.c:510:16: note: include '<string.h>' or provide a declaration of 'strlen'

getopt.c:540:17: warning: incompatible implicit declaration of built-in function 'strlen'

     nextchar += strlen (nextchar);

                 ^~~~~~

getopt.c:540:17: note: include '<string.h>' or provide a declaration of 'strlen'

getopt.c:553:17: warning: incompatible implicit declaration of built-in function 'strlen'

     nextchar += strlen (nextchar);

                 ^~~~~~

getopt.c:553:17: note: include '<string.h>' or provide a declaration of 'strlen'

getopt.c:557:16: warning: incompatible implicit declaration of built-in function 'strlen'

    nextchar += strlen (nextchar);

                ^~~~~~

getopt.c:557:16: note: include '<string.h>' or provide a declaration of 'strlen'

gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O getopt1.c

gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O error.c

gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O obstack.c

obstack.c: In function '_obstack_free':

obstack.c:333:5: warning: implicit declaration of function 'abort' [-Wimplicit-function-declaration]

     abort ();

     ^~~~~

obstack.c:333:5: warning: incompatible implicit declaration of built-in function 'abort'

obstack.c:333:5: note: include '<stdlib.h>' or provide a declaration of 'abort'

obstack.c:22:1:

+#include <stdlib.h>

 

obstack.c:333:5:

     abort ();

     ^~~~~

obstack.c: In function 'obstack_free':

obstack.c:367:5: warning: incompatible implicit declaration of built-in function 'abort'

     abort ();

     ^~~~~

obstack.c:367:5: note: include '<stdlib.h>' or provide a declaration of 'abort'

gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O xmalloc.c

gcc -c -DHAVE_CONFIG_H -I.. -I.  -g -O xstrdup.c

rm -f libm4.a

ar cru libm4.a regex.o getopt.o getopt1.o error.o obstack.o xmalloc.o xstrdup.o

: libm4.a

make[1]: Leaving directory 'C:/Program Files/Git/usr/local/m4-1.4/lib'

making all in src

make[1]: Entering directory 'C:/Program Files/Git/usr/local/m4-1.4/src'

gcc -c -DHAVE_CONFIG_H -I.. -I. -I./../lib  -g -O m4.c

m4.c:22:10: fatal error: sys/signal.h: No such file or directory

#include <sys/signal.h>

          ^~~~~~~~~~~~~~

compilation terminated.

make[1]: *** [Makefile:46: m4.o] Error 1

make[1]: Leaving directory 'C:/Program Files/Git/usr/local/m4-1.4/src'

make: *** [Makefile:59: all] Error 1

 

Patrick Farry
Director of Architecture, Unified Commerce, Global Ecommerce

T  +1 408 510 1424
M +1 408 510 1424

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