fopen: Fix compilation error on AIX (regression from 2020-05-28)

[Bruno Haible]

When compiling a testdir for module 'fopen' on AIX 7, I get this compilation
error:

gcc -maix64 -DHAVE_CONFIG_H -I. -I../../../fopen/gllib -I..  
-DGNULIB_STRICT_CHECKING=1 -I/home/haible/prefix64/include -Wall -D_THREAD_SAFE 
 -g -O2 -MT fopen.o -MD -MP -MF .deps/fopen.Tpo -c -o fopen.o 
../../../fopen/gllib/fopen.c
../../../fopen/gllib/fopen.c: In function 'rpl_fopen':
../../../fopen/gllib/fopen.c:107:27: error: 'O_BINARY' undeclared (first use in 
this function); did you mean 'O_DELAY'?
             open_flags |= O_BINARY;
                           ^~~~~~~~
                           O_DELAY
../../../fopen/gllib/fopen.c:107:27: note: each undeclared identifier is 
reported only once for each function it appears in
gmake[5]: *** [Makefile:1545: fopen.o] Error 1

This patch should fix it.


2021-08-08  Bruno Haible  <bruno@clisp.org>

        fopen: Fix compilation error on AIX (regression from 2020-05-28).
        * modules/fopen (Depends-on): Add fcntl-h.

diff --git a/modules/fopen b/modules/fopen
index 425cb61..e672cd5 100644
--- a/modules/fopen
+++ b/modules/fopen
@@ -8,6 +8,7 @@ m4/fopen.m4
 Depends-on:
 stdio
 largefile
+fcntl-h         [test $REPLACE_FOPEN = 1]
 stdbool         [test $REPLACE_FOPEN = 1]
 unistd          [test $REPLACE_FOPEN = 1]
 fstat           [test $REPLACE_FOPEN = 1]