#INCLUDE problem in libcob/call.c

[yutaro-sakamoto]

This is not a particularly important issue.
When building opensource-cobol, make command displays the following warning message.

 gcc -DHAVE_CONFIG_H -I. -I. -I.. -I.. -O2 -finline-functions -fsigned-char -Wall -Wwrite-strings -Wmissing-prototypes -Wno-format-y2k -MT libcob_la-call.lo -MD -MP -MF .deps/libcob_la-call.Tpo -c call.c  -fPIC -DPIC -o .libs/libcob_la-call.o
call.c: In function 'cob_init_call':
call.c:595:7: warning: implicit declaration of function 'strcasecmp' [-Wimplicit-function-declaration]
  595 |   if (strcasecmp (s, "LOWER") == 0) {
      | 

The function strcasecmp is defined in strings.h of C standard libraries.
Even if #include<strings.h> is added to libcob/call.c, the warning will not be resolved.
The cause of the above warning message is that #include <strings.h> refers to libcob/strings.h instead of strings.h of C standard libraries. (gcc finds libcob/strings.h first because of -I. option)
I think it is necessary to update Makefile.am in order to fix the problem.
Once I learn more about Automake and Autoconf, I will fix the warning message.

[GitMensch]

The fix is to rename strings.h or get rid of it.

With 0871d14#diff-d908034303ac15afc0713b636b65d88b02a66ef39deefdea4a79a08a269d3611 you've backported the changelog "get rid of it", you likely either want to do it (placing it in common.h) or remove that ChangeLog entry when working on it.