2 dup2() function: duplicate an open file descriptor.
10 msvc-inval [test $REPLACE_DUP2 = 1]
11 msvc-nothrow [test $REPLACE_DUP2 = 1]
15 gl_CONDITIONAL([GL_COND_OBJ_DUP2], [test $REPLACE_DUP2 = 1])
16 AM_COND_IF([GL_COND_OBJ_DUP2], [
19 gl_UNISTD_MODULE_INDICATOR([dup2])
33 Paul Eggert, Jim Meyering