From c532b58b892ae2c9696306e11fe44491740b736d Mon Sep 17 00:00:00 2001
From: Natanael Copa <ncopa@alpinelinux.org>
Date: Wed, 26 Jul 2017 14:54:06 +0200
Subject: make use of program_invocation_name optional

fixes build on linux
---
 Makefile | 12 +++++++++++-
 main.c   |  5 ++++-
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 6bbed9e..38372f5 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,17 @@ CC ?= gcc
 LD ?= gcc
 
 CFLAGS ?= -Werror -Wall -g -DDEBUG
-LDFLAGS ?= 
+LDFLAGS ?=
+
+ifeq ($(shell uname),Darwin)
+HAVE_PROGRAM_INVOCATION_NAME=
+else
+HAVE_PROGRAM_INVOCATION_NAME=1
+endif
+
+ifeq ($(HAVE_PROGRAM_INVOCATION_NAME),1)
+CFLAGS += -DHAVE_PROGRAM_INVOCATION_NAME
+endif
 
 aports-cache-objs := aports-cache.o
 
diff --git a/main.c b/main.c
index 4ee7aa8..f2320bc 100644
--- a/main.c
+++ b/main.c
@@ -11,7 +11,9 @@
 
 #include "aports-cache.h"
 
+#ifndef HAVE_PROGRAM_INVOCATION_NAME
 static char *program_invocation_name;
+#endif
 
 static void usage(int exitcode)
 {
@@ -45,8 +47,9 @@ int main(int argc, char *argv[])
 	int dirfd, rc;
 
 	char *shell_argv[] = {"/bin/sh",  NULL};
+#ifndef HAVE_PROGRAM_INVOCATION_NAME
 	program_invocation_name = argv[0];
-
+#endif
 
 	while ((c = getopt_long(argc, argv, "fs:v", opts, &i)) != -1) {
 		switch(c) {
-- 
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