make

make  all-recursive
make[1]: Entering directory `/home/<user>/libgpg-error-1.21'
Making all in m4
make[2]: Entering directory `/home/<user>/libgpg-error-1.21/m4'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory `/home/<user>/libgpg-error-1.21/m4'
Making all in src
make[2]: Entering directory `/home/<user>/libgpg-error-1.21/src'
make  all-am
make[3]: Entering directory `/home/<user>/libgpg-error-1.21/src'
/bin/sh ../libtool  --tag=CC   --mode=compile mingw32-gcc -DHAVE_CONFIG_H -I. -I..  -DLOCALEDIR=\"/home/<user>/w32root/share/locale\"    -g -O2 -O3 -Wall -Wcast-align -Wshadow -Wstrict-prototypes -Wformat -Wno-format-y2k -Wformat-security -W -Wno-sign-compare -Wno-missing-field-initializers -Wdeclaration-after-statement -Wpointer-arith -Wno-psabi -MT libgpg_error_la-estream.lo -MD -MP -MF .deps/libgpg_error_la-estream.Tpo -c -o libgpg_error_la-estream.lo `test -f 'estream.c' || echo './'`estream.c
libtool: compile:  mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -DLOCALEDIR=\"/home/<user>/w32root/share/locale\" -g -O2 -O3 -Wall -Wcast-align -Wshadow -Wstrict-prototypes -Wformat -Wno-format-y2k -Wformat-security -W -Wno-sign-compare -Wno-missing-field-initializers -Wdeclaration-after-statement -Wpointer-arith -Wno-psabi -MT libgpg_error_la-estream.lo -MD -MP -MF .deps/libgpg_error_la-estream.Tpo -c estream.c  -DDLL_EXPORT -DPIC -o .libs/libgpg_error_la-estream.o
estream.c: In function 'es_fill':
estream.c:1714:24: error: 'EWOULDBLOCK' undeclared (first use in this function)
           if (errno == EWOULDBLOCK)
                        ^
estream.c:1714:24: note: each undeclared identifier is reported only once for each function it appears in
estream.c: In function 'es_flush':
estream.c:1784:28: error: 'EWOULDBLOCK' undeclared (first use in this function)
               if (errno == EWOULDBLOCK)
                            ^
estream.c: In function 'es_read_nbf':
estream.c:2044:24: error: 'EWOULDBLOCK' undeclared (first use in this function)
           if (errno == EWOULDBLOCK)
                        ^
estream.c: In function 'es_seek':
estream.c:2316:20: error: 'EWOULDBLOCK' undeclared (first use in this function)
       if (errno == EWOULDBLOCK)
                    ^
estream.c: In function 'es_write_nbf':
estream.c:2374:24: error: 'EWOULDBLOCK' undeclared (first use in this function)
           if (errno == EWOULDBLOCK)
                        ^
make[3]: *** [libgpg_error_la-estream.lo] Error 1
make[3]: Leaving directory `/home/<user>/libgpg-error-1.21/src'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/<user>/libgpg-error-1.21/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/<user>/libgpg-error-1.21'
make: *** [all] Error 2