man: fix C99 implicit int errors

Closes: https://trac.macports.org/ticket/69459O

sysutils/man/Portfile

@@ -40,7 +40,8 @@ patchfiles          configure-DEF_NLSPATH.patch \
                     src__man-getopt.c.diff \
                     src__man.c.diff \
                     src__manpath.c.diff \
-                    src__util.c.diff
+                    src__util.c.diff \
+                    patch-int-main.diff
 
 configure.universal_args-delete --disable-dependency-tracking
 

sysutils/man/files/patch-int-main.diff

@@ -0,0 +1,65 @@
+--- configure.orig	2025-02-05 18:18:26.282384940 +1100
++++ configure	2025-02-05 18:19:18.847823147 +1100
+@@ -225,7 +225,7 @@
+ echo checking for ANSI C header files
+ echo "#include <stdlib.h>
+ #include <string.h>
+-main() { exit(0); strerror(0); }" > conftest.c
++int main() { exit(0); strerror(0); }" > conftest.c
+ eval $compile
+ if test -s conftest && ./conftest 2>/dev/null; then
+   DEFS="$DEFS -DSTDC_HEADERS"
+@@ -239,7 +239,7 @@
+ echo checking for sys/termios.h
+ echo "#include <sys/termios.h>
+ #include <stdlib.h>
+-main() { exit(0); }" > conftest.c
++int main() { exit(0); }" > conftest.c
+ eval $compile
+ if test -s conftest && ./conftest 2>/dev/null; then
+   DEFS="$DEFS -DTERMIOS_HEADER"
+@@ -249,7 +249,7 @@
+ echo checking for POSIX.1 header files
+ echo "#include <unistd.h>
+ #include <stdlib.h>
+-main() {
++int main() {
+ #ifdef _POSIX_VERSION
+ exit(0);
+ #else
+@@ -265,7 +265,7 @@
+ echo checking for BSD string and memory functions
+ echo "#include <strings.h>
+ #include <stdlib.h>
+-main() { exit(0); rindex(0, 0); bzero(0, 0); }" > conftest.c
++int main() { exit(0); rindex(0, 0); bzero(0, 0); }" > conftest.c
+ eval $compile
+ if test -s conftest && ./conftest 2>/dev/null; then :
+   else DEFS="$DEFS -DUSG"
+@@ -275,7 +275,7 @@
+ echo checking whether sys/types.h defines uid_t
+ echo '#include <sys/types.h>
+ #include <stdlib.h>
+-main() { uid_t x; exit(0); }' > conftest.c
++int main() { uid_t x; exit(0); }' > conftest.c
+ eval $compile
+ if test -s conftest && ./conftest 2>/dev/null; then :
+ else
+@@ -309,7 +309,7 @@
+ #endif
+ #endif
+ #endif
+-main() { char *p = (char *) alloca(1); exit(0); }' > conftest.c
++int main() { char *p = (char *) alloca(1); exit(0); }' > conftest.c
+ eval $compile
+ if test -s conftest && ./conftest 2>/dev/null; then :
+ elif test -d /usr/ucblib; then LIBS="$LIBS -L/usr/ucblib -lucb"
+@@ -341,7 +341,7 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ struct option long_opts[] = { { "", no_argument, NULL, 0 } };
+-main() { exit(0); }' > conftest.c
++int main() { exit(0); }' > conftest.c
+ eval $compile
+ if test -s conftest && ./conftest 2>/dev/null; then
+   manpathoption="--path"