Fix doc installation target.

diff --git a/Makefile.in b/Makefile.in
--- a/Makefile.in
+++ b/Makefile.in
@@ -37,8 +37,8 @@
 INCLUDEDIR = @includedir@
 LIBDIR = @libdir@
 BINDIR = @bindir@
-LIBEXECDIR = @libexecdir@
-DATADIR = @datadir@/$(PACKAGE)
+LIBEXECDIR = @libdir@/$(PACKAGE)
+DATADIR = @datadir@
 MAN1DIR = @mandir@/man1
 MAN3DIR = @mandir@/man3
 PCDIR = @libdir@/pkgconfig
@@ -46,16 +46,16 @@
 
 # Building configuration
 CC = @CC@
-CPPFLAGS = @MYCPPFLAGS@ \
+CPPFLAGS = -I. -I$(INCLUDEDIR) -DNDEBUG -D_GNU_SOURCE=1 \
   -D_TC_PREFIX="\"$(prefix)\"" -D_TC_INCLUDEDIR="\"$(INCLUDEDIR)\"" \
   -D_TC_LIBDIR="\"$(LIBDIR)\"" -D_TC_BINDIR="\"$(BINDIR)\"" -D_TC_LIBEXECDIR="\"$(LIBEXECDIR)\"" \
   -D_TC_APPINC="\"-I$(INCLUDEDIR)\"" -D_TC_APPLIBS="\"-L$(LIBDIR) -ltokyocabinet @LIBS@\""
 CFLAGS = @MYCFLAGS@
-LDFLAGS = @MYLDFLAGS@
+LDFLAGS = -L. -L$(LIBDIR)
 CMDLDFLAGS = @MYCMDLDFLAGS@
 LIBS = @LIBS@
-LDENV = LD_RUN_PATH=/lib:/usr/lib:$(LIBDIR):$(HOME)/lib:/usr/local/lib:@MYRUNPATH@:.
-RUNENV = @MYLDLIBPATHENV@=.:/lib:/usr/lib:$(LIBDIR):$(HOME)/lib:/usr/local/lib:@MYRUNPATH@
+LDENV = LD_RUN_PATH=/lib:/usr/lib:$(LIBDIR):@MYRUNPATH@:.
+RUNENV = @MYLDLIBPATHENV@=.:/lib:/usr/lib:$(LIBDIR):@MYRUNPATH@
 POSTCMD = @MYPOSTCMD@