Add missing bugzilla reference in previous ChangeLog entry

[thirdparty/glibc.git] / Makerules

diff --git a/Makerules b/Makerules
index 748790b591ac9380cc68bcd589625cd0ec91b94a..e9194e54cf678a7c4643fc921274f5b36eaf881e 100644 (file)
--- a/Makerules
+++ b/Makerules
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-2016 Free Software Foundation, Inc.
+# Copyright (C) 1991-2017 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -121,14 +121,10 @@ ifneq (,$(CXX))
 # will be used instead of /usr/include/stdlib.h and /usr/include/math.h.
 before-compile := $(common-objpfx)cstdlib $(common-objpfx)cmath \
                  $(before-compile)
-cstdlib=$(shell echo "\#include <cstdlib>" | $(CXX) -M -MP -x c++ - \
-               | sed -n "/cstdlib:/{s/:$$//;p}")
-$(common-objpfx)cstdlib: $(cstdlib)
+$(common-objpfx)cstdlib: $(c++-cstdlib-header)
        $(INSTALL_DATA) $< $@T
        $(move-if-change) $@T $@
-cmath=$(shell echo "\#include <cmath>" | $(CXX) -M -MP -x c++ - \
-               | sed -n "/cmath:/{s/:$$//;p}")
-$(common-objpfx)cmath: $(cmath)
+$(common-objpfx)cmath: $(c++-cmath-header)
        $(INSTALL_DATA) $< $@T
        $(move-if-change) $@T $@
 endif
@@ -214,6 +210,52 @@ sed-remove-dotdot := -e 's@  *\([^         \/$$][^         \]*\)@ $$(..)\1@g' \
                     -e 's@^\([^        \/$$][^         \]*\)@$$(..)\1@g'
 endif
 
+ifdef gen-py-const-headers
+# We'll use a static pattern rule to match .pysym files with their
+# corresponding generated .py files.
+# The generated .py files go in the submodule's dir in the glibc build dir.
+py-const-files := $(patsubst %.pysym,%.py,$(gen-py-const-headers))
+py-const-dir := $(objpfx)
+py-const := $(addprefix $(py-const-dir),$(py-const-files))
+py-const-script := $(..)scripts/gen-py-const.awk
+
+# This is a hack we use to generate .py files with constants for Python
+# pretty printers.  It works the same way as gen-as-const.
+# See scripts/gen-py-const.awk for details on how the awk | gcc mechanism
+# works.
+#
+# $@.tmp and $@.tmp2 are temporary files we use to store the partial contents
+# of the target file.  We do this instead of just writing on $@ because, if the
+# build process terminates prematurely, re-running Make wouldn't run this rule
+# since Make would see that the target file already exists (despite it being
+# incomplete).
+#
+# The sed line replaces "@name@SOME_NAME@value@SOME_VALUE@" strings from the
+# output of 'gcc -S' with "SOME_NAME = SOME_VALUE" strings.
+# The '-n' option, combined with the '/p' command, makes sed output only the
+# modified lines instead of the whole input file.  The output is redirected
+# to a .py file; we'll import it in the pretty printers file to read
+# the constants generated by gen-py-const.awk.
+# The regex has two capturing groups, for SOME_NAME and SOME_VALUE
+# respectively.  Notice SOME_VALUE may be prepended by a special character,
+# depending on the assembly syntax (e.g. immediates are prefixed by a '$'
+# in AT&T x86, and by a '#' in ARM).  We discard it using a complemented set
+# before the second capturing group.
+$(py-const): $(py-const-dir)%.py: %.pysym $(py-const-script) \
+            $(common-before-compile)
+       $(make-target-directory)
+       $(AWK) -f $(py-const-script) $< \
+              | $(CC) -S -o $@.tmp $(CFLAGS) $(CPPFLAGS) -x c -
+       echo '# GENERATED FILE\n' > $@.tmp2
+       echo '# Constant definitions for pretty printers.' >> $@.tmp2
+       echo '# See gen-py-const.awk for details.\n' >> $@.tmp2
+       sed -n -r 's/^.*@name@([^@]+)@value@[^[:xdigit:]Xx-]*([[:xdigit:]Xx-]+)@.*/\1 = \2/p' \
+           $@.tmp >> $@.tmp2
+       mv -f $@.tmp2 $@
+       rm -f $@.tmp
+
+generated += $(py-const)
+endif  # gen-py-const-headers
 
 ifdef gen-as-const-headers
 # Generating headers for assembly constants.
@@ -1195,6 +1237,7 @@ $(addprefix $(inst_sbindir)/,$(install-sbin)): \
 endif
 ifdef install-lib
 install-lib.a := $(filter lib%.a,$(install-lib))
+install-lib.a := $(filter-out $(install-lib-ldscripts),$(install-lib.a))
 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
 ifdef install-lib-non.a
 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \