Mac support

.github/workflows/build.yml

@@ -13,14 +13,16 @@ jobs:
  OS: 'ubuntu-20.04',
  CFLAGS: '-static -std=gnu89 -m32',
  HOST: 'i386-pc-linux',
- ARCHIVE_NAME: 'mips-gcc-egcs-2.91.66-linux.tar.gz'
+ ARCHIVE_NAME: 'mips-gcc-egcs-2.91.66-linux.tar.gz',
+ HOST_GCC: 'gcc'
+ }
+ - {
+ OS: 'macos-latest',
+ CFLAGS: '-DDARWIN -std=gnu89 -Wno-return-type -Wno-error -Wno-implicit-function-declaration',
+ HOST: 'i386-apple-darwin',
+ ARCHIVE_NAME: 'mips-gcc-egcs-2.91.66-mac.tar.gz',
+ HOST_GCC: 'gcc-11'
  }
- # - {
- # OS: 'macos-latest',
- # CFLAGS: '-DDARWIN -std=gnu89 -Wno-return-type -Wno-error -Wno-implicit-function-declaration',
- # HOST: 'i386-apple-darwin',
- # ARCHIVE_NAME: 'mips-gcc-egcs-2.91.66-mac.tar.gz'
- # }
 
  name: Building gcc for ${{ matrix.TARGET.OS }}
  steps:
@@ -35,11 +37,12 @@ jobs:
  - name: Configure for mips
  shell: bash
  run: |
- ./configure --target=mips-linux --prefix=/opt/cross --with-gnu-as --disable-gprof --disable-gdb --disable-werror --host=${{ matrix.TARGET.HOST }} --build=${{ matrix.TARGET.HOST }}
+ CC="${{ matrix.TARGET.HOST_GCC }}" CFLAGS="-Wno-implicit-int" ./configure --target=mips-linux --prefix=/opt/cross --with-gnu-as --disable-gprof --disable-gdb --disable-werror --host=${{ matrix.TARGET.HOST }} --build=${{ matrix.TARGET.HOST }}
 
  - name: Make
  shell: bash
  run: |
+ touch gcc/c-parse.c gcc/cexp.c gcc/cp/parse.c # makes `make` ignore regeneration of the .y files
  make -C gcc CFLAGS="${{ matrix.TARGET.CFLAGS }}" xgcc cc1 cc1plus cpp cccp g++
  - name: Test for file
  shell: bash

config.sub

@@ -909,7 +909,7 @@ case $os in
  | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
  | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
  | -cygwin32* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
- | -mingw32* | -linux-gnu* | -uxpv*)
+ | -mingw32* | -linux-gnu* | -uxpv* | -darwin* )
  # Remember, each alternative MUST END IN *, to match a version number.
  ;;
  # CYGNUS LOCAL

gcc/config.sub

@@ -732,7 +732,7 @@ case $os in
  | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
  | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
  | -cygwin32* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
- | -mingw32* | -linux-gnu* | -uxpv* | -beos* )
+ | -mingw32* | -linux-gnu* | -uxpv* | -beos* | -darwin* )
  # Remember, each alternative MUST END IN *, to match a version number.
  ;;
  -linux*)

gcc/config/i386/xm-darwin.h

@@ -0,0 +1,4 @@
+/* Configuration for GCC for Intel i386 or later running macOS as host. */
+
+#include <alloca.h>
+#include "i386/xm-i386.h"

gcc/configure

@@ -2851,6 +2851,9 @@ for machine in $build $host $target; do
 # Next line turned off because both 386BSD and BSD/386 use GNU ld.
 # use_collect2=yes
  ;;
+ i[34567]86-apple-darwin) #macOS
+ xm_file=i386/xm-darwin.h
+ ;;
  i[34567]86-*-freebsdelf*)
  tm_file="i386/i386.h i386/att.h linux.h i386/freebsd-elf.h i386/perform.h"
  # On FreeBSD, the headers are already ok, except for math.h.

libiberty/strerror.c

@@ -460,12 +460,22 @@ static int num_error_names = 0;
 static int sys_nerr;
 static const char **sys_errlist;
 
+#else
+#ifdef DARWIN
+
+// macOS added 'const' to these declarations, and clang complains if they are otherwise
+extern const int sys_nerr;
+extern const char *sys_errlist[];
+
+
 #else
 
 extern int sys_nerr;
 extern char *sys_errlist[];
 
 #endif
+#endif
+
 
 
 /*