pre-POSIX.1-2001 systems do not have <sys/select.h>

diff --git a/Makefile b/Makefile
index 5aac0c0c876957445cd6e2e7b81a59f40965930b..c9e54b15f79d89468e160e86aeed3d5f5f3a87bb 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -42,6 +42,8 @@ all::
 #
 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
 #
+# Define NO_SYS_SELECT_H if you don't have sys/select.h.
+#
 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
 # Enable it on Windows.  By default, symrefs are still used.
 #
@@ -635,6 +637,9 @@ ifdef NO_UNSETENV
        COMPAT_CFLAGS += -DNO_UNSETENV
        COMPAT_OBJS += compat/unsetenv.o
 endif
+ifdef NO_SYS_SELECT_H
+       BASIC_CFLAGS += -DNO_SYS_SELECT_H
+endif
 ifdef NO_MMAP
        COMPAT_CFLAGS += -DNO_MMAP
        COMPAT_OBJS += compat/mmap.o