On Solaris 10, I tried two compilers, like last time (see https://lists.gnu.org/archive/html/groff/2023-03/msg00005.html):
* The Sun C, C++ compilers. The build failure regarding <stdbool.h> is gone. Now there is a build failure: CC src/libs/libgroff/libgroff_a-getopt.o "../src/libs/libgroff/getopt.c", line 251: syntax error before or at: ( "../src/libs/libgroff/getopt.c", line 252: syntax error before or at: ( "../src/libs/libgroff/getopt.c", line 253: syntax error before or at: const "../src/libs/libgroff/getopt.c", line 253: syntax error before or at: int "../src/libs/libgroff/getopt.c", line 254: syntax error before or at: struct "../src/libs/libgroff/getopt.c", line 254: syntax error before or at: ) "../src/libs/libgroff/getopt.c", line 273: zero or negative subscript "../src/libs/libgroff/getopt.c", line 273: syntax error before or at: == "../src/libs/libgroff/getopt.c", line 278: warning: old-style declaration or incorrect type for: __posixly_correct "../src/libs/libgroff/getopt.c", line 279: warning: old-style declaration or incorrect type for: d ... The cause is apparently the use of __attribute__((__unused__)) in src/libs/libgroff/getopt.c line 251. This syntax is not portable; it works only in GCC, clang, and AIX xlc. Instead, you can use the Gnulib module 'attribute', #include "attribute.h", and use MAYBE_UNUSED instead of __attribute__((__unused__)). This is portable. * The gcc, g++ compilers. Now 152 instead of 150 test failures. Bruno
