file_utils.cpp: add a missing <cstdint> include

[barracuda156]

Fix building with gcc13

[guidotack]

Sorry for the long delay in responding to this. The codebase appears to be compiling cleanly with gcc 13, and I can't see anything in file_utils.cpp that would require <cstdint>. If you can still reproduce the compilation failure, could you post the exact error message?

[barracuda156]

@guidotack I do not have gcc13 now, but I will try building with gcc14 without this patch and let you know.

[barracuda156]

@guidotack

[ 43%] Building CXX object CMakeFiles/mzn.dir/lib/file_utils.cpp.o
/opt/local/bin/g++-mp-14 -DHAS_CPLEX -DHAS_GUROBI -DHAS_HIGHS -DHAS_SCIP -DHAS_XPRESS -I/opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/include -I/opt/local/var/macports/build/minizinc-a31400bc/work/build/include -pipe -Os -DNDEBUG -isystem/opt/local/include/LegacySupport -I/opt/local/include -D_GLIBCXX_USE_CXX11_ABI=0 -std=gnu++11 -arch ppc -mmacosx-version-min=10.6 -fPIC -MD -MT CMakeFiles/mzn.dir/lib/file_utils.cpp.o -MF CMakeFiles/mzn.dir/lib/file_utils.cpp.o.d -o CMakeFiles/mzn.dir/lib/file_utils.cpp.o -c /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/lib/file_utils.cpp
In file included from /opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.3.0/include/stdint.h:9,
                 from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/include/minizinc/_thirdparty/miniz.h:486,
                 from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/lib/file_utils.cpp:27:
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.3.0/include-fixed/stdint.h:74:9: error: 'uint32_t' does not name a type
   74 | typedef uint32_t       uint_least32_t;
      |         ^~~~~~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.3.0/include-fixed/stdint.h:1:1: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
  +++ |+#include <cstdint>
    1 | /*  DO NOT EDIT THIS FILE.
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.3.0/include-fixed/stdint.h:85:9: error: 'uint32_t' does not name a type
   85 | typedef uint32_t        uint_fast32_t;
      |         ^~~~~~~~
/opt/local/lib/gcc14/gcc/powerpc-apple-darwin10/14.3.0/include-fixed/stdint.h:85:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
In file included from /usr/include/libproc.h:30,
                 from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/lib/file_utils.cpp:32:
/usr/include/sys/mount.h:119:17: error: 'uint32_t' does not name a type
  119 | struct statfs64 __DARWIN_STRUCT_STATFS64;
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:77:1: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
   76 | #include <sys/attr.h>           /* needed for vol_capabilities_attr_t */
  +++ |+#include <cstdint>
   77 | 
/usr/include/sys/mount.h:119:17: error: 'uint32_t' does not name a type
  119 | struct statfs64 __DARWIN_STRUCT_STATFS64;
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:119:17: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:119:17: error: 'uint32_t' does not name a type
  119 | struct statfs64 __DARWIN_STRUCT_STATFS64;
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:119:17: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:119:17: error: 'uint32_t' does not name a type
  119 | struct statfs64 __DARWIN_STRUCT_STATFS64;
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:119:17: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:119:17: error: 'uint32_t' does not name a type
  119 | struct statfs64 __DARWIN_STRUCT_STATFS64;
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:119:17: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:125:15: error: 'uint32_t' does not name a type
  125 | struct statfs __DARWIN_STRUCT_STATFS64;
      |               ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:125:15: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:125:15: error: 'uint32_t' does not name a type
  125 | struct statfs __DARWIN_STRUCT_STATFS64;
      |               ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:125:15: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:125:15: error: 'uint32_t' does not name a type
  125 | struct statfs __DARWIN_STRUCT_STATFS64;
      |               ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:125:15: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:125:15: error: 'uint32_t' does not name a type
  125 | struct statfs __DARWIN_STRUCT_STATFS64;
      |               ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:125:15: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:125:15: error: 'uint32_t' does not name a type
  125 | struct statfs __DARWIN_STRUCT_STATFS64;
      |               ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/sys/mount.h:125:15: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:160:9: error: 'uint32_t' does not name a type
  160 |         uint32_t        f_bsize;        /* fundamental file system block size */
      |         ^~~~~~~~
/usr/include/sys/mount.h:160:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:174:9: error: 'uint32_t' does not name a type
  174 |         uint32_t        f_fssubtype;     /* fs sub-type (flavor) */
      |         ^~~~~~~~
/usr/include/sys/mount.h:174:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:286:9: error: 'uint32_t' does not name a type
  286 |         uint32_t vfc_reserved1;         /* opaque */
      |         ^~~~~~~~
/usr/include/sys/mount.h:286:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:291:9: error: 'uint32_t' does not name a type
  291 |         uint32_t vfc_reserved2;         /* opaque */
      |         ^~~~~~~~
/usr/include/sys/mount.h:291:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/mount.h:292:9: error: 'uint32_t' does not name a type
  292 |         uint32_t vfc_reserved3;         /* opaque */
      |         ^~~~~~~~
/usr/include/sys/mount.h:292:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
In file included from /usr/include/libproc.h:33:
/usr/include/sys/proc_info.h:55:9: error: 'uint32_t' does not name a type
   55 |         uint32_t                pbi_flags;              /* 64bit; emulated etc */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:44:1: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
   43 | #include <netinet/tcp.h>
  +++ |+#include <cstdint>
   44 | 
/usr/include/sys/proc_info.h:56:9: error: 'uint32_t' does not name a type
   56 |         uint32_t                pbi_status;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:56:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:57:9: error: 'uint32_t' does not name a type
   57 |         uint32_t                pbi_xstatus;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:57:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:58:9: error: 'uint32_t' does not name a type
   58 |         uint32_t                pbi_pid;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:58:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:59:9: error: 'uint32_t' does not name a type
   59 |         uint32_t                pbi_ppid;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:59:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:66:9: error: 'uint32_t' does not name a type
   66 |         uint32_t                rfu_1;                  /* reserved */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:66:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:69:9: error: 'uint32_t' does not name a type
   69 |         uint32_t                pbi_nfiles;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:69:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:70:9: error: 'uint32_t' does not name a type
   70 |         uint32_t                pbi_pgid;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:70:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:71:9: error: 'uint32_t' does not name a type
   71 |         uint32_t                pbi_pjobc;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:71:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:72:9: error: 'uint32_t' does not name a type
   72 |         uint32_t                e_tdev;                 /* controlling tty dev */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:72:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:73:9: error: 'uint32_t' does not name a type
   73 |         uint32_t                e_tpgid;                /* tty process group id */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:73:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:144:9: error: 'uint32_t' does not name a type
  144 |         uint32_t                pri_protection;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:144:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:145:9: error: 'uint32_t' does not name a type
  145 |         uint32_t                pri_max_protection;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:145:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:146:9: error: 'uint32_t' does not name a type
  146 |         uint32_t                pri_inheritance;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:146:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:147:9: error: 'uint32_t' does not name a type
  147 |         uint32_t                pri_flags;              /* shared, external pager, is submap */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:147:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:149:9: error: 'uint32_t' does not name a type
  149 |         uint32_t                pri_behavior;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:149:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:150:9: error: 'uint32_t' does not name a type
  150 |         uint32_t                pri_user_wired_count;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:150:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:151:9: error: 'uint32_t' does not name a type
  151 |         uint32_t                pri_user_tag;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:151:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:152:9: error: 'uint32_t' does not name a type
  152 |         uint32_t                pri_pages_resident;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:152:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:153:9: error: 'uint32_t' does not name a type
  153 |         uint32_t                pri_pages_shared_now_private;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:153:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:154:9: error: 'uint32_t' does not name a type
  154 |         uint32_t                pri_pages_swapped_out;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:154:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:155:9: error: 'uint32_t' does not name a type
  155 |         uint32_t                pri_pages_dirtied;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:155:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:156:9: error: 'uint32_t' does not name a type
  156 |         uint32_t                pri_ref_count;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:156:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:157:9: error: 'uint32_t' does not name a type
  157 |         uint32_t                pri_shadow_depth;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:157:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:158:9: error: 'uint32_t' does not name a type
  158 |         uint32_t                pri_share_mode;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:158:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:159:9: error: 'uint32_t' does not name a type
  159 |         uint32_t                pri_private_pages_resident;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:159:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:160:9: error: 'uint32_t' does not name a type
  160 |         uint32_t                pri_shared_pages_resident;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:160:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:161:9: error: 'uint32_t' does not name a type
  161 |         uint32_t                pri_obj_id;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:161:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:162:9: error: 'uint32_t' does not name a type
  162 |         uint32_t                pri_depth;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:162:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:199:9: error: 'uint32_t' does not name a type
  199 |         uint32_t        pwq_nthreads;           /* total number of workqueue threads */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:199:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:200:9: error: 'uint32_t' does not name a type
  200 |         uint32_t        pwq_runthreads;         /* total number of running workqueue threads */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:200:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:201:9: error: 'uint32_t' does not name a type
  201 |         uint32_t        pwq_blockedthreads;     /* total number of blocked workqueue threads */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:201:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:202:9: error: 'uint32_t' does not name a type
  202 |         uint32_t        reserved[1];            /* reserved for future use */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:202:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:206:9: error: 'uint32_t' does not name a type
  206 |         uint32_t                fi_openflags;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:206:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:207:9: error: 'uint32_t' does not name a type
  207 |         uint32_t                fi_status;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:207:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:221:9: error: 'uint32_t' does not name a type
  221 |         uint32_t        vst_dev;        /* [XSI] ID of device containing file */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:221:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:238:9: error: 'uint32_t' does not name a type
  238 |         uint32_t        vst_flags;      /* user defined flags for file */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:238:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:239:9: error: 'uint32_t' does not name a type
  239 |         uint32_t        vst_gen;        /* file generation number */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:239:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:240:9: error: 'uint32_t' does not name a type
  240 |         uint32_t        vst_rdev;       /* [XSI] Device ID */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:240:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:302:9: error: 'uint32_t' does not name a type
  302 |         uint32_t                                insi_flags;             /* generic IP/datagram flags */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:302:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:303:9: error: 'uint32_t' does not name a type
  303 |         uint32_t                                insi_flow;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:303:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:307:9: error: 'uint32_t' does not name a type
  307 |         uint32_t                                rfu_1;                  /* reserved */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:307:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:356:9: error: 'uint32_t' does not name a type
  356 |         uint32_t                        tcpsi_flags;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:356:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:357:9: error: 'uint32_t' does not name a type
  357 |         uint32_t                        rfu_1;          /* reserved */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:357:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:384:9: error: 'uint32_t' does not name a type
  384 |         uint32_t        ndrvsi_if_family;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:384:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:385:9: error: 'uint32_t' does not name a type
  385 |         uint32_t        ndrvsi_if_unit;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:385:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:394:9: error: 'uint32_t' does not name a type
  394 |         uint32_t        kesi_vendor_code_filter;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:394:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:395:9: error: 'uint32_t' does not name a type
  395 |         uint32_t        kesi_class_filter;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:395:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:396:9: error: 'uint32_t' does not name a type
  396 |         uint32_t        kesi_subclass_filter;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:396:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:404:9: error: 'uint32_t' does not name a type
  404 |         uint32_t        kcsi_id;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:404:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:405:9: error: 'uint32_t' does not name a type
  405 |         uint32_t        kcsi_reg_unit;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:405:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:406:9: error: 'uint32_t' does not name a type
  406 |         uint32_t        kcsi_flags;                     /* support flags */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:406:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:407:9: error: 'uint32_t' does not name a type
  407 |         uint32_t        kcsi_recvbufsize;               /* request more than the default buffer size */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:407:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:408:9: error: 'uint32_t' does not name a type
  408 |         uint32_t        kcsi_sendbufsize;               /* request more than the default buffer size */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:408:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:409:9: error: 'uint32_t' does not name a type
  409 |         uint32_t        kcsi_unit;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:409:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:431:9: error: 'uint32_t' does not name a type
  431 |         uint32_t                sbi_cc;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:431:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:432:9: error: 'uint32_t' does not name a type
  432 |         uint32_t                sbi_hiwat;                      /* SO_RCVBUF, SO_SNDBUF */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:432:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:433:9: error: 'uint32_t' does not name a type
  433 |         uint32_t                sbi_mbcnt;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:433:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:434:9: error: 'uint32_t' does not name a type
  434 |         uint32_t                sbi_mbmax;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:434:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:435:9: error: 'uint32_t' does not name a type
  435 |         uint32_t                sbi_lowat;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:435:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:465:9: error: 'uint32_t' does not name a type
  465 |         uint32_t                                soi_oobmark;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:465:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:469:9: error: 'uint32_t' does not name a type
  469 |         uint32_t                                rfu_1;          /* reserved */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:469:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:527:9: error: 'uint32_t' does not name a type
  527 |         uint32_t                kq_state;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:527:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:528:9: error: 'uint32_t' does not name a type
  528 |         uint32_t                rfu_1;  /* reserved */
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:528:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/sys/proc_info.h:561:9: error: 'uint32_t' does not name a type
  561 |         uint32_t                proc_fdtype;
      |         ^~~~~~~~
/usr/include/sys/proc_info.h:561:9: note: 'uint32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
/usr/include/libproc.h:59:19: error: 'uint32_t' was not declared in this scope; did you mean 'base64::uint32_t'?
   59 | int proc_listpids(uint32_t type, uint32_t typeinfo, void *buffer, int buffersize);
      |                   ^~~~~~~~
      |                   base64::uint32_t
In file included from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/include/minizinc/_thirdparty/b64/ccommon.h:18,
                 from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/include/minizinc/_thirdparty/b64/cdecode.h:11,
                 from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/include/minizinc/_thirdparty/b64/decode.h:19,
                 from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/lib/file_utils.cpp:25:
/opt/local/include/LegacySupport/stdlib.h:71:30: note: 'base64::uint32_t' declared here
   71 | typedef unsigned int         uint32_t;
      |                              ^~~~~~~~
/usr/include/libproc.h:59:34: error: 'uint32_t' was not declared in this scope; did you mean 'base64::uint32_t'?
   59 | int proc_listpids(uint32_t type, uint32_t typeinfo, void *buffer, int buffersize);
      |                                  ^~~~~~~~
      |                                  base64::uint32_t
/opt/local/include/LegacySupport/stdlib.h:71:30: note: 'base64::uint32_t' declared here
   71 | typedef unsigned int         uint32_t;
      |                              ^~~~~~~~
/usr/include/libproc.h:59:53: error: expected primary-expression before 'void'
   59 | int proc_listpids(uint32_t type, uint32_t typeinfo, void *buffer, int buffersize);
      |                                                     ^~~~
/usr/include/libproc.h:59:67: error: expected primary-expression before 'int'
   59 | int proc_listpids(uint32_t type, uint32_t typeinfo, void *buffer, int buffersize);
      |                                                                   ^~~
/usr/include/libproc.h:59:81: error: expression list treated as compound expression in initializer [-fpermissive]
   59 | int proc_listpids(uint32_t type, uint32_t typeinfo, void *buffer, int buffersize);
      |                                                                                 ^
/usr/include/libproc.h:80:27: error: 'uint32_t' was not declared in this scope; did you mean 'base64::uint32_t'?
   80 | int     proc_listpidspath(uint32_t      type,
      |                           ^~~~~~~~
      |                           base64::uint32_t
/opt/local/include/LegacySupport/stdlib.h:71:30: note: 'base64::uint32_t' declared here
   71 | typedef unsigned int         uint32_t;
      |                              ^~~~~~~~
/usr/include/libproc.h:81:27: error: 'uint32_t' was not declared in this scope; did you mean 'base64::uint32_t'?
   81 |                           uint32_t      typeinfo,
      |                           ^~~~~~~~
      |                           base64::uint32_t
/opt/local/include/LegacySupport/stdlib.h:71:30: note: 'base64::uint32_t' declared here
   71 | typedef unsigned int         uint32_t;
      |                              ^~~~~~~~
/usr/include/libproc.h:82:27: error: expected primary-expression before 'const'
   82 |                           const char    *path,
      |                           ^~~~~
/usr/include/libproc.h:83:27: error: 'uint32_t' was not declared in this scope; did you mean 'base64::uint32_t'?
   83 |                           uint32_t      pathflags,
      |                           ^~~~~~~~
      |                           base64::uint32_t
/opt/local/include/LegacySupport/stdlib.h:71:30: note: 'base64::uint32_t' declared here
   71 | typedef unsigned int         uint32_t;
      |                              ^~~~~~~~
/usr/include/libproc.h:84:27: error: expected primary-expression before 'void'
   84 |                           void          *buffer,
      |                           ^~~~
/usr/include/libproc.h:85:27: error: expected primary-expression before 'int'
   85 |                           int           buffersize);
      |                           ^~~
/usr/include/libproc.h:85:51: error: expression list treated as compound expression in initializer [-fpermissive]
   85 |                           int           buffersize);
      |                                                   ^
/usr/include/libproc.h:89:39: error: 'uint32_t' has not been declared
   89 | int proc_name(int pid, void * buffer, uint32_t buffersize);
      |                                       ^~~~~~~~
/usr/include/libproc.h:90:67: error: 'uint32_t' has not been declared
   90 | int proc_regionfilename(int pid, uint64_t address, void * buffer, uint32_t buffersize);
      |                                                                   ^~~~~~~~
/usr/include/libproc.h:91:33: error: 'uint32_t' has not been declared
   91 | int proc_kmsgbuf(void * buffer, uint32_t buffersize);
      |                                 ^~~~~~~~
/usr/include/libproc.h:92:42: error: 'uint32_t' has not been declared
   92 | int proc_pidpath(int pid, void * buffer, uint32_t  buffersize);
      |                                          ^~~~~~~~
In file included from /usr/include/unistd.h:72,
                 from /opt/local/include/LegacySupport/unistd.h:87,
                 from /opt/local/var/macports/build/minizinc-a31400bc/work/libminizinc-2.9.2/lib/file_utils.cpp:33:
/opt/local/include/LegacySupport/sys/unistd.h:115:50: error: 'uint32_t' has not been declared
  115 |                          void *buf, size_t size, uint32_t flags);
      |                                                  ^~~~~~~~
make[2]: *** [CMakeFiles/mzn.dir/lib/file_utils.cpp.o] Error 1

We have added a fix in MacPorts in macports/macports-ports@0c89f31
At least as 2.9.2, it is still relevant.

[Dekker1]

This is a strange error. It points to the error being the #include <stdint.h> statement in the miniz dependency. Isn't that what is actually supposed to define uint32_t? I wonder if it's just that the stdlib for PowerPC has some problem. I don't understand why <cstdint> and <stdint.h> aren't the same.

[barracuda156]

@Dekker1 You can find a lot of similar errors reported and fixed in different ports (for different platforms). Random example on Linux: micknoise/Maximilian#140
I did not investigate in detail, since the compiler says what it wants, and it works correctly.