Re: [bug-gawk] Gawk compile error Mingw32

[Eli Zaretskii]

> From: Ivan Suchý <address@hidden>
> Date: Mon, 14 Mar 2016 20:39:13 +0100
> 
> Hello I tried to compile GNU Gawk 4.1.3 on Windows 10 using MingW32 compiler 
> copying content of pc
> directory to gawk sources according to manual
> 
> https://www.gnu.org/software/gawk/manual/html_node/PC-Compiling.html#PC-Compiling
> 
> but compilation in Msys ended with following error:
> 
> https://gist.github.com/is73/3902d517c37d04b33f27
> 
> Please could you help me, I'm not so skilled in C.

The patch below should fix this:

--- pc/Makefile~        2015-04-05 11:13:50.000000000 +0300
+++ pc/Makefile 2016-03-15 12:27:22.062033000 +0200
@@ -168,28 +168,28 @@
 
 mingw32:
        $(MAK) all \
-       CC=gcc O=.o CF="-D__USE_MINGW_ANSI_STDIO -O2 -gdwarf-2 -g3" \
+       CC=gcc O=.o CF="-D__USE_MINGW_ANSI_STDIO -O2 -gdwarf-2 -g3 
-Wno-deprecated-declarations" \
        OBJ=popen.o LNK=LMINGW32 LF="-gdwarf-2 -g3" \
         LF2="-lws2_32 -lmsvcp60" RSP=
 
 mingw32-readline:
        $(MAK) all \
        CC=gcc O=.o \
-       CF="-D__USE_MINGW_ANSI_STDIO -DHAVE_LIBREADLINE -O2 -gdwarf-2 -g3" \
+       CF="-D__USE_MINGW_ANSI_STDIO -DHAVE_LIBREADLINE -O2 -gdwarf-2 -g3 
-Wno-deprecated-declarations" \
        OBJ=popen.o LNK=LMINGW32 LF="-gdwarf-2 -g3" \
        LF2="-lreadline -lws2_32 -lmsvcp60 -Wl,--enable-auto-import" RSP=
 
 mingw32-mpfr:
        $(MAK) all \
        CC=gcc O=.o \
-       CF="-D__USE_MINGW_ANSI_STDIO -DHAVE_MPFR -O2 -gdwarf-2 -g3" \
+       CF="-D__USE_MINGW_ANSI_STDIO -DHAVE_MPFR -O2 -gdwarf-2 -g3 
-Wno-deprecated-declarations" \
        OBJ=popen.o LNK=LMINGW32 LF="-gdwarf-2 -g3" \
        LF2="-lmpfr -lgmp -lws2_32 -lmsvcp60 -Wl,--enable-auto-import" RSP=
 
 mingw32-readline-mpfr:
        $(MAK) all \
        CC=gcc O=.o \
-       CF="-D__USE_MINGW_ANSI_STDIO -DHAVE_LIBREADLINE -DHAVE_MPFR -O2 
-gdwarf-2 -g3" \
+       CF="-D__USE_MINGW_ANSI_STDIO -DHAVE_LIBREADLINE -DHAVE_MPFR -O2 
-gdwarf-2 -g3 -Wno-deprecated-declarations" \
        OBJ=popen.o LNK=LMINGW32 LF="-gdwarf-2 -g3" \
        LF2="-lmpfr -lgmp -lreadline -lws2_32 -lmsvcp60 
-Wl,--enable-auto-import" RSP=
 
--- pc/gawkmisc.pc~     2015-04-27 18:01:59.000000000 +0300
+++ pc/gawkmisc.pc      2016-03-15 12:30:00.704596900 +0200
@@ -584,6 +584,9 @@
   return setenv (name, "", 1);
 }
 
+/* MinGW 3.21 and later defines usleep as an inline function in
+   unistd.h, which conflicts with the version below.  */
+#if __MINGW32_MAJOR_VERSION + (__MINGW32_MINOR_VERSION > 20) < 4
 int
 usleep(unsigned int usec)
 {
@@ -593,6 +596,7 @@
 
   return usec - msecf * 1000 < 0 ? 0 : (int)(usec - msecf * 1000);
 }
+#endif
 
 /* The implementation of wctob in the MS runtime is problematic
    because it doesn't allow to distinguish between WEOF and 0xff, due