Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h.
diff --git a/zconf.h b/zconf.h
index 97b3a70..76aba96 100644
--- a/zconf.h
+++ b/zconf.h
@@ -439,7 +439,7 @@
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
* equivalently requesting no 64-bit operations
*/
-#if defined(LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
# undef _LARGEFILE64_SOURCE
#endif
@@ -447,7 +447,7 @@
# define Z_HAVE_UNISTD_H
#endif
#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(LARGEFILE64_SOURCE)
+# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
diff --git a/zconf.h.cmakein b/zconf.h.cmakein
index 3c44906..8f1956c 100644
--- a/zconf.h.cmakein
+++ b/zconf.h.cmakein
@@ -441,7 +441,7 @@
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
* equivalently requesting no 64-bit operations
*/
-#if defined(LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
# undef _LARGEFILE64_SOURCE
#endif
@@ -449,7 +449,7 @@
# define Z_HAVE_UNISTD_H
#endif
#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(LARGEFILE64_SOURCE)
+# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
diff --git a/zconf.h.in b/zconf.h.in
index 97b3a70..76aba96 100644
--- a/zconf.h.in
+++ b/zconf.h.in
@@ -439,7 +439,7 @@
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
* equivalently requesting no 64-bit operations
*/
-#if defined(LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
# undef _LARGEFILE64_SOURCE
#endif
@@ -447,7 +447,7 @@
# define Z_HAVE_UNISTD_H
#endif
#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(LARGEFILE64_SOURCE)
+# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */