$ make
make -C doc all
make[1]: Entering directory `/c/psql-native/postgresql-snapshot/doc'
gzip -d -c man.tar.gz | /bin/tar xf -
for file in man1/*.1; do \
  mv $file $file.bak && \
  sed -e 's/\\fR(l)/\\fR(7)/' $file.bak >$file && \
  rm -f $file.bak || exit; \
done
/bin/sh.exe ../config/mkinstalldirs man7
mkdir -p -- man7
for file in manl/*.l; do \
  sed -e '/^\.TH/s/"l"/"7"/'   \
              -e 's/\\fR(l)/\\fR(7)/' \
      $file >man7/`basename $file | sed 's/.l$/.7/'` || exit; \
done
make[1]: Leaving directory `/c/psql-native/postgresql-snapshot/doc'
make -C src all
make[1]: Entering directory `/c/psql-native/postgresql-snapshot/src'
make -C port all
make[2]: Entering directory `/c/psql-native/postgresql-snapshot/src/port'
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -I./src/include/port/win32 -DEXEC_BACKEND  "-I../../src/include/port/win32"  -c -o crypt.o crypt.c
crypt.c:504: warning: no previous prototype for `crypt'
crypt.c: In function `init_des':
crypt.c:830: warning: unused variable `init_start'
c:/mingw/include/winnt.h: At top level:
crypt.c:1018: warning: `setkey' defined but not used
crypt.c:1044: warning: `encrypt' defined but not used
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -I./src/include/port/win32 -DEXEC_BACKEND  "-I../../src/include/port/win32"  -c -o fseeko.o fseeko.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes -Wmissing-declarations -I../../src/include -I./src/include/port/win32 -DEXEC_BACKEND  "-I../../src/include/port/win32"  -c -o getrusage.o getrusage.c
In file included from ../../src/include/postgres.h:48,
                 from getrusage.c:19:
../../src/include/c.h:80:26: pg_config_os.h: No such file or directory
In file included from ../../src/include/c.h:771,
                 from ../../src/include/postgres.h:48,
                 from getrusage.c:19:
../../src/include/port.h:65: warning: `struct timezone' declared inside parameter list
../../src/include/port.h:65: warning: its scope is only this definition or declaration, which is probably not what you want
../../src/include/port.h:65: warning: `struct timeval' declared inside parameter list
make[2]: *** [getrusage.o] Error 1
make[2]: Leaving directory `/c/psql-native/postgresql-snapshot/src/port'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/c/psql-native/postgresql-snapshot/src'
make: *** [all] Error 2