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Merged
merged 10 commits into from
Sep 1, 2025
Merged

Updating for latest github macos image. #1965

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a759cb8
Fixing https://github.com/orgs/Homebrew/discussions/6351
nicolasnoble Aug 31, 2025
d911c2b
Updating to binutils 2.45.
nicolasnoble Sep 1, 2025
5cb9084
Restoring readme properly.
nicolasnoble Sep 1, 2025
27e6fab
Adding verbose mode.
nicolasnoble Sep 1, 2025
00bd1db
Upgrading gcc and gdb as well...
nicolasnoble Sep 1, 2025
d56b30e
Derp.
nicolasnoble Sep 1, 2025
c319254
Adding zlib patch for binutils on macos...
nicolasnoble Sep 1, 2025
909eb22
Also patching gcc now.
nicolasnoble Sep 1, 2025
a7035f3
Fixing OpenBIOS build under 15.2...
nicolasnoble Sep 1, 2025
d6e1526
Now fixing psyqo...
nicolasnoble Sep 1, 2025
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6 changes: 4 additions & 2 deletions .github/workflows/macos-toolchain.yml
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Expand Up @@ -19,9 +19,11 @@ jobs:
- uses: n1hility/cancel-previous-runs@v2
with:
token: ${{ secrets.GITHUB_TOKEN }}
- name: install dependencies
run: brew install --verbose nikitabobko/tap/brew-install-path
Comment on lines +22 to +23
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🛠️ Refactor suggestion

Pin the tap commit to avoid supply-chain drift.

Installing the external brew command from a moving tap HEAD can break CI unexpectedly. Pin the tap to a known commit, then install the formula.

-    - name: install dependencies
-      run: brew install --verbose nikitabobko/tap/brew-install-path
+    - name: install brew-install-path (pinned)
+      run: |
+        brew tap nikitabobko/tap https://github.com/nikitabobko/homebrew-tap
+        git -C "$(brew --repo nikitabobko/tap)" checkout <commit-sha>
+        brew install --verbose nikitabobko/tap/brew-install-path
+      shell: bash

Replace with the tested revision.

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
- name: install dependencies
run: brew install --verbose nikitabobko/tap/brew-install-path
- name: install brew-install-path (pinned)
run: |
brew tap nikitabobko/tap https://github.com/nikitabobko/homebrew-tap
git -C "$(brew --repo nikitabobko/tap)" checkout <commit-sha>
brew install --verbose nikitabobko/tap/brew-install-path
shell: bash
🤖 Prompt for AI Agents 
.github/workflows/macos-toolchain.yml lines 22-23: currently installing an
external brew formula directly from the tap HEAD—pin the tap to a specific
commit to avoid supply-chain drift by (1) tapping the nikitabobko/tap repo, (2)
fetching and checking out the tested <commit-sha> in the tap repository, and
then (3) running the brew install of nikitabobko/tap/brew-install-path; replace
<commit-sha> with the known-good revision and ensure these steps are executed in
the workflow before the installation step.

- name: build mips binutils
run: brew install ./tools/macos-mips/mipsel-none-elf-binutils.rb --debug
run: brew install-path --verbose ./tools/macos-mips/mipsel-none-elf-binutils.rb
- name: build mips gcc
run: brew install ./tools/macos-mips/mipsel-none-elf-gcc.rb --debug
run: brew install-path --verbose ./tools/macos-mips/mipsel-none-elf-gcc.rb
- name: build openbios
run: make -C ./src/mips/openbios
5 changes: 3 additions & 2 deletions README.md
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Expand Up @@ -130,8 +130,9 @@ You need MacOS Catalina or later with the latest XCode to build, as well as a fe

Compiling OpenBIOS will require a mips compiler, that you can generate using the following commands:
```bash
brew install ./tools/macos-mips/mipsel-none-elf-binutils.rb
brew install ./tools/macos-mips/mipsel-none-elf-gcc.rb
brew install nikitabobko/tap/brew-install-path
brew install-path ./tools/macos-mips/mipsel-none-elf-binutils.rb
brew install-path ./tools/macos-mips/mipsel-none-elf-gcc.rb
```

Then, you can compile OpenBIOS using `make -C ./src/mips/openbios`.
Expand Down
4 changes: 2 additions & 2 deletions src/mips/openbios/card/device.c
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Expand Up @@ -632,9 +632,9 @@ static const struct Device s_cardDevice = {
.desc = "MEMORY CARD",
.init = (void (*)())psxdummy,
.open = dev_bu_open,
.action = psxdummy,
.action = (int (*)(struct File *, enum FileAction))psxdummy,
.close = dev_bu_close,
.ioctl = psxdummy,
.ioctl = (int (*)(struct File *, int, int))psxdummy,
.read = dev_bu_read,
.write = dev_bu_write,
.erase = dev_bu_erase,
Expand Down
14 changes: 7 additions & 7 deletions src/mips/openbios/cdrom/cdrom.c
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Expand Up @@ -101,18 +101,18 @@ static const struct Device s_cdromDevice = {
.desc = "CD-ROM",
.init = (void (*)())psxdummy,
.open = dev_cd_open,
.action = psxdummy,
.close = psxdummy,
.ioctl = psxdummy,
.action = (int (*)(struct File *, enum FileAction))psxdummy,
.close = (int (*)(struct File *))psxdummy,
.ioctl = (int (*)(struct File *, int, int))psxdummy,
.read = dev_cd_read,
.write = psxdummy,
.erase = psxdummy,
.write = (int (*)(struct File *, void *, int))psxdummy,
.erase = (int (*)(struct File *, const char *))psxdummy,
.undelete = psxdummy,
.firstFile = dev_cd_firstFile,
.nextFile = dev_cd_nextFile,
.format = psxdummy,
.format = (int (*)(struct File *))psxdummy,
.chdir = dev_cd_chdir,
.rename = psxdummy,
.rename = (int (*)(struct File *, const char *, struct File *, const char *))psxdummy,
.deinit = deinitCDRom,
Comment on lines +105 to 116
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💡 Verification agent

🧩 Analysis chain

Replace repeated casts with correctly-typed stubs to avoid UB and reduce warning surface.

Multiple fields cast psxdummy to incompatible signatures. Safer and clearer to use typed no-op wrappers. Also, nit: fix int, int spacing.

Apply within this block:

-    .action = (int (*)(struct File *, enum FileAction))psxdummy,
-    .close  = (int (*)(struct File *))psxdummy,
-    .ioctl  = (int (*)(struct File *, int,  int))psxdummy,
+    .action = cd_action_noop,
+    .close  = cd_close_noop,
+    .ioctl  = cd_ioctl_noop,
     .read   = dev_cd_read,
-    .write  = (int (*)(struct File *, void *, int))psxdummy,
-    .erase  = (int (*)(struct File *, const char *))psxdummy,
+    .write  = cd_write_noop,
+    .erase  = cd_erase_noop,
     .undelete = psxdummy,
     .firstFile = dev_cd_firstFile,
     .nextFile  = dev_cd_nextFile,
-    .format = (int (*)(struct File *))psxdummy,
+    .format = cd_format_noop,
     .chdir  = dev_cd_chdir,
-    .rename = (int (*)(struct File *, const char *, struct File *, const char *))psxdummy,
+    .rename = cd_rename_noop,

Add near the top of this file (or shared):

static int cd_action_noop(struct File *f, enum FileAction a){ (void)f; (void)a; return 0; }
static int cd_close_noop(struct File *f){ (void)f; return 0; }
static int cd_ioctl_noop(struct File *f, int a, int b){ (void)f; (void)a; (void)b; return 0; }
static int cd_write_noop(struct File *f, void *buf, int sz){ (void)f; (void)buf; (void)sz; return -1; } // write not supported
static int cd_erase_noop(struct File *f, const char *p){ (void)f; (void)p; return -1; }
static int cd_format_noop(struct File *f){ (void)f; return -1; }
static int cd_rename_noop(struct File *f, const char *o, struct File *u, const char *n){
    (void)f; (void)o; (void)u; (void)n; return -1;
}

Verification: run a quick scan to catch any remaining casts so we can standardize on wrappers.

🏁 Script executed:

#!/bin/bash
# Find device initializers still casting psxdummy
rg -nP '\.\s*(action|close|ioctl|write|erase|format|rename)\s*=\s*\([^)]*\)\s*psxdummy' -C2 src | sed -n '1,200p'

Length of output: 113

🏁 Script executed:

#!/bin/bash
# List all occurrences of psxdummy casts or assignments in the CD-ROM driver
rg -n 'psxdummy' -C2 src/mips/openbios/cdrom/cdrom.c

Length of output: 867

🏁 Script executed:

#!/bin/bash
# Show the struct initializer context in cdrom.c to identify field types
sed -n '1,50p' src/mips/openbios/cdrom/cdrom.c

Length of output: 2153

🏁 Script executed:

#!/bin/bash
# Display the struct initializer for the CD-ROM device to inspect all psxdummy assignments
sed -n '80,150p' src/mips/openbios/cdrom/cdrom.c

Length of output: 1994

Replace all psxdummy casts in the s_cdromDevice initializer with correctly-typed no-op stubs
Define static stub functions for each signature at the top of cdrom.c (or in a shared helper), for example:

static void          cd_init_noop(struct Device *d){ (void)d; }
static int           cd_action_noop(struct File *f, enum FileAction a){ (void)f; (void)a; return 0; }
static int           cd_close_noop(struct File *f){ (void)f; return 0; }
static int           cd_ioctl_noop(struct File *f, int a, int b){ (void)f; (void)a; (void)b; return 0; }
static ssize_t       cd_read_noop(struct File *f, void *buf, int sz){ (void)f; (void)buf; (void)sz; return -1; }
static int           cd_erase_noop(struct File *f, const char *p){ (void)f; (void)p; return -1; }
static int           cd_format_noop(struct File *f){ (void)f; return -1; }
static int           cd_undelete_noop(struct File *f){ (void)f; return 0; }
static int           cd_rename_noop(struct File *f, const char *o, struct File *u, const char *n){
    (void)f; (void)o; (void)u; (void)n; return -1;
}
static int           cd_check_noop(void){ return 0; }

Then update each initializer field in src/mips/openbios/cdrom/cdrom.c accordingly (and fix the double space in .ioctl = … int, int).

.check = psxdummy,
};
Expand Down
30 changes: 15 additions & 15 deletions src/mips/openbios/tty/tty.c
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Expand Up @@ -54,17 +54,17 @@ static const struct Device s_ttyDevice = {
.init = dev_tty_init,
.open = dev_tty_open,
.action = dev_tty_action,
.close = psxdummy,
.close = (int (*)(struct File *))psxdummy,
.ioctl = dev_tty_ioctl,
.read = psxdummy,
.write = psxdummy,
.erase = psxdummy,
.read = (int (*)(struct File *, void *, int))psxdummy,
.write = (int (*)(struct File *, void *, int))psxdummy,
.erase = (int (*)(struct File *, const char *))psxdummy,
.undelete = psxdummy,
.firstFile = (struct DirEntry * (*)(struct File *, const char *, struct DirEntry *)) psxdummy,
.nextFile = (struct DirEntry * (*)(struct File *, struct DirEntry *)) psxdummy,
.format = psxdummy,
.format = (int (*)(struct File *))psxdummy,
.chdir = psxdummy,
.rename = psxdummy,
.rename = (int (*)(struct File *, const char *, struct File *, const char *))psxdummy,
.deinit = (void (*)())psxdummy,
.check = psxdummy,
};
Expand All @@ -77,19 +77,19 @@ static const struct Device s_dummyDevice = {
.blockSize = 1,
.desc = "CONSOLE",
.init = (void (*)())psxdummy,
.open = psxdummy,
.action = psxdummy,
.close = psxdummy,
.ioctl = psxdummy,
.read = psxdummy,
.write = psxdummy,
.erase = psxdummy,
.open = (int (*)(struct File *, const char *, int))psxdummy,
.action = (int (*)(struct File *, enum FileAction))psxdummy,
.close = (int (*)(struct File *))psxdummy,
.ioctl = (int (*)(struct File *, int, int))psxdummy,
.read = (int (*)(struct File *, void *, int))psxdummy,
.write = (int (*)(struct File *, void *, int))psxdummy,
.erase = (int (*)(struct File *, const char *))psxdummy,
.undelete = psxdummy,
.firstFile = (struct DirEntry * (*)(struct File *, const char *, struct DirEntry *)) psxdummy,
.nextFile = (struct DirEntry * (*)(struct File *, struct DirEntry *)) psxdummy,
.format = psxdummy,
.format = (int (*)(struct File *))psxdummy,
.chdir = psxdummy,
.rename = psxdummy,
.rename = (int (*)(struct File *, const char *, struct File *, const char *))psxdummy,
.deinit = (void (*)())psxdummy,
.check = psxdummy,
};
Expand Down
5 changes: 3 additions & 2 deletions src/mips/psyqo/GETTING_STARTED.md
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Expand Up @@ -26,8 +26,9 @@ trizen -S cross-mipsel-linux-gnu-binutils cross-mipsel-linux-gnu-gcc
Using [Homebrew](https://brew.sh/), you can install the mips toolchain after downloading [these two scripts](https://github.com/grumpycoders/pcsx-redux/tree/main/tools/macos-mips) (or cloning the whole PCSX-Redux repository).

```bash
brew install ./tools/macos-mips/mipsel-none-elf-binutils.rb
brew install ./tools/macos-mips/mipsel-none-elf-gcc.rb
brew install nikitabobko/tap/brew-install-path
brew install-path ./tools/macos-mips/mipsel-none-elf-binutils.rb
brew install-path ./tools/macos-mips/mipsel-none-elf-gcc.rb
```

## Windows
Expand Down
12 changes: 6 additions & 6 deletions tools/linux-mips/spawn-compiler.sh
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Expand Up @@ -13,21 +13,21 @@ set -ex

PREFIX=${PREFIX:-"/usr/local"}

for url in https://ftpmirror.gnu.org/gnu/binutils/binutils-2.43.tar.gz https://mirrors.kernel.org/gnu/binutils/binutils-2.43.tar.gz ; do
for url in https://ftpmirror.gnu.org/gnu/binutils/binutils-2.45.tar.gz https://mirrors.kernel.org/gnu/binutils/binutils-2.45.tar.gz ; do
wget --max-redirect=2 --timeout=60 --continue --trust-server-names $url && break
done
tar xvfz binutils-2.43.tar.gz
cd binutils-2.43
tar xvfz binutils-2.45.tar.gz
cd binutils-2.45
./configure --target=mipsel-none-elf --disable-multilib --disable-nls --disable-werror --prefix=$PREFIX
make
make install-strip
cd ..

for url in https://ftpmirror.gnu.org/gnu/gcc/gcc-14.2.0/gcc-14.2.0.tar.gz https://mirrors.kernel.org/gnu/gcc/gcc-14.2.0/gcc-14.2.0.tar.gz ; do
for url in https://ftpmirror.gnu.org/gnu/gcc/gcc-15.2.0/gcc-15.2.0.tar.gz https://mirrors.kernel.org/gnu/gcc/gcc-15.2.0/gcc-15.2.0.tar.gz ; do
wget --max-redirect=2 --timeout=60 --continue --trust-server-names $url && break
done
tar xvfz gcc-14.2.0.tar.gz
cd gcc-14.2.0
tar xvfz gcc-15.2.0.tar.gz
cd gcc-15.2.0
./contrib/download_prerequisites
mkdir build
cd build
Expand Down
52 changes: 49 additions & 3 deletions tools/macos-mips/mipsel-none-elf-binutils.rb
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@@ -1,12 +1,14 @@
class MipselNoneElfBinutils < Formula
desc "FSF Binutils for mipsel cross development"
homepage "https://www.gnu.org/software/binutils/"
url "https://ftpmirror.gnu.org/gnu/binutils/binutils-2.43.tar.gz"
mirror "https://mirrors.kernel.org/gnu/binutils/binutils-2.43.tar.gz"
sha256 "025c436d15049076ebe511d29651cc4785ee502965a8839936a65518582bdd64"
url "https://ftpmirror.gnu.org/gnu/binutils/binutils-2.45.tar.gz"
mirror "https://mirrors.kernel.org/gnu/binutils/binutils-2.45.tar.gz"
sha256 "8a3eb4b10e7053312790f21ee1a38f7e2bbd6f4096abb590d3429e5119592d96"

depends_on "texinfo" => :build

patch :DATA

def install
system "./configure", "--target=mipsel-none-elf",
"--disable-multilib",
Expand All @@ -20,3 +22,47 @@ def install
assert_match "f()", shell_output("#{bin}/mipsel-none-elf-c++filt _Z1fv")
end
end

__END__
diff --git a/zlib/zutil.h b/zlib/zutil.h
index 0bd2dbcba..bb513cb4b 100644
--- a/zlib/zutil.h
+++ b/zlib/zutil.h
@@ -137,17 +137,8 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
# endif
#endif

-#if defined(MACOS) || defined(TARGET_OS_MAC)
+#if defined(MACOS)
# define OS_CODE 7
-# ifndef Z_SOLO
-# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-# include <unix.h> /* for fdopen */
-# else
-# ifndef fdopen
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# endif
-# endif
-# endif
#endif

#ifdef __acorn
@@ -170,18 +161,6 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
# define OS_CODE 19
#endif

-#if defined(_BEOS_) || defined(RISCOS)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-#endif
-
-#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
-# if defined(_WIN32_WCE)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# else
-# define fdopen(fd,type) _fdopen(fd,type)
-# endif
-#endif
-
#if defined(__BORLANDC__) && !defined(MSDOS)
#pragma warn -8004
#pragma warn -8008
52 changes: 49 additions & 3 deletions tools/macos-mips/mipsel-none-elf-gcc.rb
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@@ -1,16 +1,18 @@
class MipselNoneElfGcc < Formula
desc "The GNU compiler collection for mipsel"
homepage "https://gcc.gnu.org"
url "https://ftpmirror.gnu.org/gnu/gcc/gcc-14.2.0/gcc-14.2.0.tar.xz"
mirror "https://mirrors.kernel.org/gnu/gcc/gcc-14.2.0/gcc-14.2.0.tar.xz"
sha256 "a7b39bc69cbf9e25826c5a60ab26477001f7c08d85cec04bc0e29cabed6f3cc9"
url "https://ftpmirror.gnu.org/gnu/gcc/gcc-15.2.0/gcc-15.2.0.tar.xz"
mirror "https://mirrors.kernel.org/gnu/gcc/gcc-15.2.0/gcc-15.2.0.tar.xz"
sha256 "438fd996826b0c82485a29da03a72d71d6e3541a83ec702df4271f6fe025d24e"

depends_on "gmp"
depends_on "mipsel-none-elf-binutils"
depends_on "libmpc"
depends_on "mpfr"
depends_on "gnu-sed"

patch :DATA

def install
ENV.prepend_path "PATH", Formula["gnu-sed"].opt_libexec/"gnubin"
mkdir "mipsel-none-elf-gcc-build" do
Expand Down Expand Up @@ -50,3 +52,47 @@ def install
system "#{bin}/mipsel-none-elf-gcc", "-c", "-o", "test-c.o", "test-c.c"
end
end

__END__
diff --git a/zlib/zutil.h b/zlib/zutil.h
index 0bd2dbcba..bb513cb4b 100644
--- a/zlib/zutil.h
+++ b/zlib/zutil.h
@@ -130,17 +130,8 @@
# endif
#endif

-#if defined(MACOS) || defined(TARGET_OS_MAC)
+#if defined(MACOS)
# define OS_CODE 7
Comment on lines +65 to +67
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⚠️ Potential issue

Restore TARGET_OS_MAC in zlib’s MAC guard.

Same concern as the VSCode script: keep TARGET_OS_MAC to avoid OS_CODE/behavior changes on Apple.

-#if defined(MACOS)
+#if defined(MACOS) || defined(TARGET_OS_MAC)
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
-#if defined(MACOS) || defined(TARGET_OS_MAC)
+#if defined(MACOS)
# define OS_CODE 7
#if defined(MACOS) || defined(TARGET_OS_MAC)
# define OS_CODE 7
🤖 Prompt for AI Agents 
In tools/macos-mips/mipsel-none-elf-gcc.rb around lines 65 to 67, the
preprocessor guard was changed to remove TARGET_OS_MAC; restore TARGET_OS_MAC so
the condition checks both MACOS and TARGET_OS_MAC. Replace the current
single-symbol check with a compound check that uses defined(MACOS) ||
defined(TARGET_OS_MAC) so the original behavior and OS_CODE mapping remain
unchanged.

-# ifndef Z_SOLO
-# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-# include <unix.h> /* for fdopen */
-# else
-# ifndef fdopen
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# endif
-# endif
-# endif
#endif

#ifdef __acorn
@@ -163,19 +154,12 @@
# define OS_CODE 19
#endif

-#if defined(_BEOS_) || defined(RISCOS)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-#endif
-
#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
# if defined(_WIN32_WCE)
-# define fdopen(fd,mode) NULL /* No fdopen() */
# ifndef _PTRDIFF_T_DEFINED
typedef int ptrdiff_t;
# define _PTRDIFF_T_DEFINED
# endif
-# else
-# define fdopen(fd,type) _fdopen(fd,type)
# endif
#endif
6 changes: 3 additions & 3 deletions tools/macos-mips/mipsel-none-elf-gdb.rb
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@@ -1,9 +1,9 @@
class MipselNoneElfGdb < Formula
desc "GDB: The GNU Project Debugger compiled for Mips"
homepage "https://sourceware.org/gdb/"
url "https://ftpmirror.gnu.org/gnu/gdb/gdb-15.1.tar.xz"
mirror "https://mirrors.kernel.org/gnu/gdb/gdb-15.1.tar.xz"
sha256 "38254eacd4572134bca9c5a5aa4d4ca564cbbd30c369d881f733fb6b903354f2"
url "https://ftpmirror.gnu.org/gnu/gdb/gdb-16.3.tar.xz"
mirror "https://mirrors.kernel.org/gnu/gdb/gdb-16.3.tar.xz"
sha256 "bcfcd095528a987917acf9fff3f1672181694926cc18d609c99d0042c00224c5"

# inspired by https://github.com/orgs/Homebrew/discussions/1114#discussioncomment-8863715

Expand Down
52 changes: 52 additions & 0 deletions tools/macos-mips/zlib.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,52 @@
From 4bd9a71f3539b5ce47f0c67ab5e01f3196dc8ef9 Mon Sep 17 00:00:00 2001
From: Mark Adler <[email protected]>
Date: Tue, 12 Dec 2023 22:19:05 -0600
Subject: [PATCH] Remove fdopen #defines in zutil.h.

fdopen() is not used by zlib anymore. The #defines are vestigial.
---
zutil.h | 23 +----------------------
1 file changed, 1 insertion(+), 22 deletions(-)

diff --git a/zutil.h b/zutil.h
index 0bd2dbcba..bb513cb4b 100644
--- a/zutil.h
+++ b/zutil.h
@@ -137,17 +137,8 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
# endif
#endif

-#if defined(MACOS) || defined(TARGET_OS_MAC)
+#if defined(MACOS)
# define OS_CODE 7
Comment on lines +19 to +21
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🛠️ Refactor suggestion

Retain TARGET_OS_MAC in the condition.

Same rationale as in the embedded patches: avoid changing OS_CODE semantics on Apple hosts.

-#if defined(MACOS)
+#if defined(MACOS) || defined(TARGET_OS_MAC)
🤖 Prompt for AI Agents 
In tools/macos-mips/zlib.patch around lines 19 to 21, the preprocessor condition
was changed to drop TARGET_OS_MAC; restore the original combined condition so
Apple-host detection still triggers. Replace the line with a condition that
checks both defined(MACOS) || defined(TARGET_OS_MAC) (i.e., revert to the
original compound #if) so OS_CODE remains unchanged on Apple hosts.

-# ifndef Z_SOLO
-# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-# include <unix.h> /* for fdopen */
-# else
-# ifndef fdopen
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# endif
-# endif
-# endif
#endif

#ifdef __acorn
@@ -170,18 +161,6 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
# define OS_CODE 19
#endif

-#if defined(_BEOS_) || defined(RISCOS)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-#endif
-
-#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
-# if defined(_WIN32_WCE)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# else
-# define fdopen(fd,type) _fdopen(fd,type)
-# endif
-#endif
-
#if defined(__BORLANDC__) && !defined(MSDOS)
#pragma warn -8004
#pragma warn -8008
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