build ghctags-inplace

mk/config.mk.in

@@ -785,7 +785,7 @@ GHC_SPLIT_DIR_ABS	= $(FPTOOLS_TOP_ABS)/$(GHC_SPLIT_DIR_REL)
 GHC_UNLIT_PGM		= unlit$(exeext)
 GHC_HP2PS_PGM		= hp2ps
 GHC_HSTAGS_PGM		= hasktags
-GHC_GHCTAGS_PGM		= ghctags
+GHC_GHCTAGS_INPLACE_PGM	= ghctags-inplace
 GHC_HSC2HS_INPLACE_PGM	= hsc2hs-inplace
 GHC_TOUCHY_PGM		= touchy$(exeext)
 GHC_MANGLER_PGM		= ghc-asm
@@ -811,7 +811,7 @@ endif
 UNLIT			= $(GHC_UNLIT_DIR)/$(GHC_UNLIT_PGM)
 HP2PS			= $(GHC_HP2PS_DIR)/$(GHC_HP2PS_PGM)
 HSTAGS			= $(GHC_HSTAGS_DIR)/$(GHC_HSTAGS_PGM)
-GHCTAGS			= $(GHC_GHCTAGS_DIR)/$(GHC_GHCTAGS_PGM)
+GHCTAGS_INPLACE		= $(GHC_GHCTAGS_DIR)/$(GHC_GHCTAGS_INPLACE_PGM)
 HSC2HS_INPLACE		= $(GHC_HSC2HS_DIR)/$(GHC_HSC2HS_INPLACE_PGM)
 MANGLER			= $(GHC_MANGLER_DIR)/$(GHC_MANGLER_PGM)
 SPLIT			= $(GHC_SPLIT_DIR)/$(GHC_SPLIT_PGM)

utils/ghctags/Makefile

 TOP=../..
 include $(TOP)/mk/boilerplate.mk
 
-HS_PROG = ghctags
 SRC_HC_OPTS += -package ghc
+
 HC=$(GHC_STAGE1)
 
-CLEAN_FILES += Main.hi
+# On Windows, ghc-pkg is a standalone program
+# ($bindir/ghc-pkg.exe), whereas on Unix it needs a wrapper script
+# to pass the appropriate flag to the real binary
+# ($libexecdir/ghc-pkg.bin) so that it can find package.conf.
+ifeq "$(HOSTPLATFORM)" "i386-unknown-mingw32"
+HS_PROG           = ghctags.exe
+INSTALL_PROGS    += $(HS_PROG)
+else
+HS_PROG           = ghctags.bin
+INSTALL_LIBEXECS += $(HS_PROG)
+endif
+
+# -----------------------------------------------------------------------------
+# ghctags and ghctags-inplace scripts
+
+# See commentary in ../ghc-pkg/Makefile
+
+INPLACE_HS=ghctags-inplace.hs
+INPLACE_PROG=ghctags-inplace
+EXCLUDED_SRCS+=$(INPLACE_HS)
+
+$(INPLACE_HS): Makefile $(FPTOOLS_TOP)/mk/config.mk
+	echo "import System.Cmd; import System.Environment; import System.Exit" > $@
+	echo "main = do args <- getArgs; rawSystem \"$(FPTOOLS_TOP_ABS)/$(GHC_GHCTAGS_DIR_REL)/$(HS_PROG)\" (\"--topdir\":\"$(FPTOOLS_TOP_ABS)\":args) >>= exitWith" >> $@
+
+$(INPLACE_PROG): $(INPLACE_HS)
+	$(HC) --make $< -o $@
+
+all :: $(INPLACE_PROG)
+
+CLEAN_FILES += $(INPLACE_HS) $(INPLACE_PROG)
+
+ifneq "$(HOSTPLATFORM)" "i386-unknown-mingw32"
+LINK = ghctags
+LINK_TARGET = $(LINK)-$(ProjectVersion)
+INSTALLED_SCRIPT=$(DESTDIR)$(bindir)/$(LINK_TARGET)
+install::
+	$(INSTALL_DIR) $(DESTDIR)$(bindir)
+	$(RM) -f $(INSTALLED_SCRIPT)
+	echo "#!$(SHELL)"                                      >> $(INSTALLED_SCRIPT)
+	echo "GHCTAGSBIN=$(libexecdir)/$(HS_PROG)"             >> $(INSTALLED_SCRIPT)
+	echo "TOPDIR=$(libdir)"                  	       >> $(INSTALLED_SCRIPT)
+	echo 'exec $$GHCTAGSBIN --topdir $$TOPDIR $${1+"$$@"}' >> $(INSTALLED_SCRIPT)
+	$(EXECUTABLE_FILE) $(INSTALLED_SCRIPT)
+endif
 
-INSTALL_PROGS += $(HS_PROG)
+binary-dist:
+	$(INSTALL_DIR)                $(BIN_DIST_DIR)/utils/ghctags
+	$(INSTALL_DATA)    Makefile   $(BIN_DIST_DIR)/utils/ghctags/
+	$(INSTALL_PROGRAM) $(HS_PROG) $(BIN_DIST_DIR)/utils/ghctags/
 
 include $(TOP)/mk/target.mk