rrdtool1: fix compilation with GCC 15

Currently, rrdtool1 produces the following build error
for various C files while building with GCC 15:

In file included from rrd_tool.h:93,
                 from rrd_cgi.c:11:
getopt.h:108:12: error: conflicting types for 'getopt'; have 'int(void)'
  108 | extern int getopt ();
      |            ^~~~~~
In file included from include/fortify/unistd.h:22,
                 from rrd_tool.h:56:
include/unistd.h:127:5: note: previous declaration of 'getopt' with type 'int(int,  char * const*, const char *)'
  127 | int getopt(int, char * const [], const char *);
      |     ^~~~~~

This adds -std=gnu17 to TARGET_CFLAGS to fix the compilation error.

Signed-off-by: Til Kaiser <[email protected]>

diff --git a/utils/rrdtool1/Makefile b/utils/rrdtool1/Makefile
index 5b9885633ba4ff1492177b6c03180f533d234e3f..afe3452f56aea4698d177186d8d8924d45ea1101 100644 (file)
--- a/utils/rrdtool1/Makefile
+++ b/utils/rrdtool1/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rrdtool1
 PKG_VERSION:=1.0.50
-PKG_RELEASE:=6
+PKG_RELEASE:=7
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/rrdtool-$(PKG_VERSION)
 PKG_SOURCE:=rrdtool-$(PKG_VERSION).tar.gz
@@ -86,7 +86,7 @@ $(call Package/rrdtool1/description/Default)
  This package contains command line tools used to manage RRDs.
 endef
 
-TARGET_CFLAGS += $(FPIC)
+TARGET_CFLAGS += $(FPIC) -std=gnu17
 
 CONFIGURE_ARGS += \
        $(DISABLE_NLS) \