fix musl build, reported via IRC

package/gzip/Makefile

@@ -5,7 +5,7 @@ include $(ADK_TOPDIR)/rules.mk
 
 PKG_NAME:=		gzip
 PKG_VERSION:=		1.6
-PKG_RELEASE:=		1
+PKG_RELEASE:=		2
 PKG_HASH:=		37dfed1a485d53212c43b3fa2a7c7952f09bf5cd86e37121c222341ee1b27847
 PKG_DESCR:=		compression utility
 PKG_SECTION:=		app/archive
@@ -17,6 +17,8 @@ include $(ADK_TOPDIR)/mk/package.mk
 
 $(eval $(call PKG_template,GZIP,gzip,$(PKG_VERSION)-${PKG_RELEASE},${PKG_DEPENDS},${PKG_DESCR},${PKG_SECTION}))
 
+AUTOTOOL_STYLE:=	autoreconf
+
 gzip-install:
 	$(INSTALL_DIR) $(IDIR_GZIP)/usr/bin
 	$(CP) $(WRKINST)/usr/bin/* $(IDIR_GZIP)/usr/bin

package/gzip/patches/patch-lib_fseeko_c

@@ -0,0 +1,18 @@
+--- gzip-1.6.orig/lib/fseeko.c	2013-04-07 03:59:54.000000000 +0200
++++ gzip-1.6/lib/fseeko.c	2016-01-14 16:58:56.000000000 +0100
+@@ -99,8 +99,14 @@ fseeko (FILE *fp, off_t offset, int when
+ #elif defined EPLAN9                /* Plan9 */
+   if (fp->rp == fp->buf
+       && fp->wp == fp->buf)
++#elif FUNC_FFLUSH_STDIN < 0 && 200809 <= _POSIX_VERSION
++  /* Cross-compiling to some other system advertising conformance to
++     POSIX.1-2008 or later.  Assume fseeko and fflush work as advertised.
++     If this assumption is incorrect, please report the bug to
++     bug-gnulib.  */
++  if (0)
+ #else
+-  #error "Please port gnulib fseeko.c to your platform! Look at the code in fpurge.c, then report this to bug-gnulib."
++  #error "Please port gnulib fseeko.c to your platform! Look at the code in fseeko.c, then report this to bug-gnulib."
+ #endif
+     {
+       /* We get here when an fflush() call immediately preceded this one (or

package/gzip/patches/patch-m4_fflush_m4

@@ -0,0 +1,29 @@
+--- gzip-1.6.orig/m4/fflush.m4	2013-06-09 22:37:56.000000000 +0200
++++ gzip-1.6/m4/fflush.m4	2016-01-14 17:07:56.000000000 +0100
+@@ -14,7 +14,15 @@ AC_DEFUN([gl_FUNC_FFLUSH],
+ [
+   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+   gl_FUNC_FFLUSH_STDIN
+-  if test $gl_cv_func_fflush_stdin = no; then
++  case $gl_cv_func_fflush_stdin in
++    yes) gl_func_fflush_stdin=1 ;;
++    no)  gl_func_fflush_stdin=0 ;;
++    *)   gl_func_fflush_stdin='(-1)' ;;
++  esac
++  AC_DEFINE_UNQUOTED([FUNC_FFLUSH_STDIN], [$gl_func_fflush_stdin],
++    [Define to 1 if fflush is known to work on stdin as per POSIX.1-2008,
++     0 if fflush is known to not work, -1 if unknown.])
++  if test $gl_cv_func_fflush_stdin != yes; then
+     REPLACE_FFLUSH=1
+   fi
+ ])
+@@ -72,8 +80,7 @@ AC_DEFUN([gl_FUNC_FFLUSH_STDIN],
+            return 7;
+          return 0;
+        ]])], [gl_cv_func_fflush_stdin=yes], [gl_cv_func_fflush_stdin=no],
+-     [dnl Pessimistically assume fflush is broken.
+-      gl_cv_func_fflush_stdin=no])
++	[gl_cv_func_fflush_stdin=cross])
+      rm conftest.txt
+     ])
+ ])