https://codeberg.org/ciberandy/qiv/pulls/13.patch
From d2ae120c0b9796b154224efddfcd6f1df1d78ceb Mon Sep 17 00:00:00 2001
From: Nicolas PARLANT <nicolas.parlant@parhuet.fr>
Date: Sat, 5 Jul 2025 21:19:37 +0200
Subject: [PATCH] adapt Makefile for distro-building

Allow more variables to be defined to avoid editing/patching to build
a package.

Launch-test with make check only

Signed-off-by: Nicolas PARLANT <nicolas.parlant@parhuet.fr>
---
 Makefile | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index 595cdeb..cdf0e9b 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@
 #######################################################################
 
 # Directory where qiv will be installed under.
-PREFIX = /usr/local
+PREFIX ?= /usr/local
 
 # Fonts to use for statusbar and comments
 STATUSBAR_FONT = "Monospace 9"
@@ -30,7 +30,7 @@ GETOPT_LONG = -DHAVE_GETOPT_LONG
 
 # This program will be run on the manual page after it is installed.
 # If you don't want to compress the manpage, change it to 'true'.
-COMPRESS_PROG = gzip -9f
+COMPRESS_PROG ?= gzip -9f
 
 # Comment this line out if your system doesn't have lcms2 installed
 # (for minimal Color Management support)
@@ -50,12 +50,13 @@ EXIF = -DHAVE_EXIF
 ######################################################################
 
 ifeq ($(origin CC),default)
-CC = gcc
+CC ?= gcc
 endif
 
 PKG_CONFIG ?= pkg-config
 INSTALL    ?= install
-CFLAGS    = -O2 -Wall \
+STRIP_FLAG ?= -s
+CFLAGS     ?= -O2 -Wall \
 	    -fcaller-saves -ffast-math -fno-strength-reduce \
 	    -fthread-jumps
 
@@ -120,7 +121,7 @@ DEFINES_G = $(DEFINES) -DDEBUG
 all: $(PROGRAM)
 
 $(PROGRAM): $(OBJS)
-	$(CC) $(CFLAGS) $(DEFINES) $(OBJS) $(LIBS) -o $(PROGRAM)
+	$(CC) $(CFLAGS) $(DEFINES) $(OBJS) $(LDFLAGS) $(LIBS) -o $(PROGRAM)
 
 $(OBJS): %.o: %.c $(HEADERS) Makefile
 	$(CC) -c $(CFLAGS) $(DEFINES) $(INCLUDES) $< -o $@
@@ -132,7 +133,7 @@ main.o: main.h
 debug: $(PROGRAM_G)
 
 $(PROGRAM_G): $(OBJS_G)
-	$(CC) -g $(CFLAGS) $(DEFINES_G) $(OBJS_G) $(LIBS) -o $(PROGRAM_G)
+	$(CC) -g $(CFLAGS) $(DEFINES_G) $(OBJS_G) $(LDFLAGS) $(LIBS) -o $(PROGRAM_G)
 
 $(OBJS_G): %.g: %.c $(HEADERS)
 	$(CC) -c -g $(CFLAGS) $(DEFINES_G) $(INCLUDES) $< -o $@
@@ -152,7 +153,7 @@ install: $(PROGRAM)
 	  $(INSTALL) -d -m 0755 $(PREFIX)/bin; \
 	  echo install -d -m 0755 $(PREFIX)/bin; \
         fi
-	$(INSTALL) -s -m 0755 $(PROGRAM) $(PREFIX)/bin
+	$(INSTALL) $(STRIP_FLAG) -m 0755 $(PROGRAM) $(PREFIX)/bin
 	@if [ ! -e $(PREFIX)/share/man/man1 ]; then \
 	  echo install -d -m 0755 $(PREFIX)/share/man/man1; \
 	  $(INSTALL) -d -m 0755 $(PREFIX)/share/man/man1; \
@@ -169,10 +170,12 @@ install: $(PROGRAM)
 	  $(INSTALL) -d -m 0755 $(PREFIX)/share/applications; \
 	fi
 	$(INSTALL) -m 0644 qiv.desktop $(PREFIX)/share/applications/qiv.desktop
+	@echo "\nDont forget to look into the \"qiv-command\" file and install it!\n-> cp qiv-command.example $(PREFIX)/bin/qiv-command\n\n"
+
+check: $(PROGRAM)
 	@if ./qiv -f ./intro.jpg ; \
 	then echo "-- Test Passed --" ; \
 	else echo "-- Test Failed --" ; \
 	fi
-	@echo "\nDont forget to look into the \"qiv-command\" file and install it!\n-> cp qiv-command.example $(PREFIX)/bin/qiv-command\n\n"
 
 # the end... ;-)
-- 
2.47.2