norohind/kmscon
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build: fix binary-link with ld.gold linker

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The ld.gold linker doesn't provide --format=default but needs --format=elf
instead. However, this doesn't work with ld.bfd. To avoid any linker
detection, we now link any binary file via partial-linking into a proper
object file itself and then link this object file in the final linking
step.
This also produces a fake libtool *.lo file so the libtool linking command
doesn't complain about PIC/non-PIC problems.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
This commit is contained in:
David Herrmann 2013-03-08 17:04:05 +01:00
parent e1344b5691
commit aeddc5b552
1 changed files with 30 additions and 5 deletions
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35
Makefile.am
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@ -147,6 +147,31 @@ endif
EXTRA_DIST += src/genversion.sh
GITHEAD:=$(shell $(emptyvariable)"$(srcdir)/src/genversion.sh" "$(srcdir)/src/shl_githead.c")
#
# Binary File Compiler
# This target gets as input a binary file *.bin and produces an ELF/etc. output
# object file *.bin.o and the corresponding libtool file *.bin.lo.
# Note that we fake the libtool object files as there is no way to make libtool
# create it. The comments in the .lo file are mandatory so don't remove them!
#
CLEANFILES += src/*.bin.lo src/*.bin.o
src/%.bin.lo: src/%.bin
$(AM_V_GEN)$(LD) -r -o "src/$*.bin.o" -z noexecstack --format=binary "$<"
$(AM_V_at)echo "# $@ - a libtool object file" >"$@"
$(AM_V_at)echo "# Generated by $(shell $(LIBTOOL) --version | head -n 1)" >>"$@"
$(AM_V_at)echo "#" >>"$@"
$(AM_V_at)echo "# Please DO NOT delete this file!" >>"$@"
$(AM_V_at)echo "# It is necessary for linking the library." >>"$@"
$(AM_V_at)echo >>"$@"
$(AM_V_at)echo "# Name of the PIC object." >>"$@"
$(AM_V_at)echo "pic_object='$*.bin.o'" >>"$@"
$(AM_V_at)echo >>"$@"
$(AM_V_at)echo "# Name of the non-PIC object" >>"$@"
$(AM_V_at)echo "non_pic_object='$*.bin.o'" >>"$@"
$(AM_V_at)echo >>"$@"
#
# SHL - Static Helper Library
# The SHL subsystem contains several small code pieces used all over kmscon and
@ -430,6 +455,7 @@ src/static_shaders.c: $(SHADERS) genshader$(EXEEXT)
UNIFONT = $(top_srcdir)/src/font_unifont_data.hex
UNIFONT_BIN = src/font_unifont_data.bin
UNIFONT_LT = src/font_unifont_data.bin.lo
EXTRA_DIST += $(UNIFONT)
CLEANFILES += $(UNIFONT_BIN)
@ -451,14 +477,13 @@ mod_unifont_la_SOURCES = \
src/kmscon_module_interface.h \
src/font_unifont.c \
src/kmscon_mod_unifont.c
EXTRA_mod_unifont_la_DEPENDENCIES = $(UNIFONT_BIN)
mod_unifont_la_LIBADD = libshl.la
mod_unifont_la_LIBADD = \
$(UNIFONT_LT) \
libshl.la
mod_unifont_la_LDFLAGS = \
$(AM_LDFLAGS) \
-module \
-avoid-version \
-Wl,-z,noexecstack \
-Wl,--format=binary -Wl,$(UNIFONT_BIN) -Wl,--format=default
-avoid-version
if BUILD_ENABLE_FONT_FREETYPE2
module_LTLIBRARIES += mod-freetype2.la