build: Update scripts/makefile.*

Apply the following updates:
 * Tidy up the compiler flag definitions.
 * Update the Darwin, Linux and MSYS makefiles to match the compiler
   flags used in scripts/makefile.clang and scripts/makefile.gcc.
 * Add the `pngtest-static` target in the Darwin makefile, following
   on the Linux makefile.
 * Rewrite some of the implicit make rules to match one another more
   consistently.
 * Make corrections in the copyright years to match git log.
This commit is contained in:
Cosmin Truta
2025-01-21 19:06:43 +02:00
parent 36a16fd761
commit 9cc729b523
25 changed files with 127 additions and 129 deletions

View File

@@ -1,7 +1,7 @@
# Makefile for libpng (static)
# IBM C version 3.x for Win32 and OS/2
# Copyright (C) 2006, 2014 Glenn Randers-Pehrson
# Copyright (C) 2000, 2020 Cosmin Truta
# Copyright (C) 2000, 2020-2025 Cosmin Truta
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
@@ -46,7 +46,7 @@ LIBS = libpng$(A) $(ZLIBLIB)/zlib$(A)
# Targets
.c$(O):
$(CC) -c $(CPPFLAGS) $(CFLAGS) $<
$(CC) -c $(CPPFLAGS) $(CFLAGS) $*.c
all: libpng$(A) pngtest$(E)