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[build] Check for broken elftoolchain version of objcopy 

The elftoolchain version of objcopy (as used in FreeBSD) seems to be
unusable for generating a raw binary file, since it will apparently
ignore the load memory addresses specified for each section in the
input file.

The binutils version of objcopy may be used on FreeBSD by specifying

  OBJCOPY=/usr/local/bin/objcopy

Detect an attempt to use the unusable elftoolchain version of objcopy
and report it as an error.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/242/head
Michael Brown 2021-01-30 01:56:16 +00:00
parent fe52f8e8be
commit 1fea8ce06a
1 changed files with 7 additions and 0 deletions
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7
src/Makefile.housekeeping
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@ -113,6 +113,13 @@ $(warning Use GNU ld instead)
$(error Unsuitable build environment found)
endif
OBJCOPY_ETC_BANNER := $(shell $(OBJCOPY) --version | grep 'elftoolchain')
ifneq ($(OBJCOPY_ETC_BANNER),)
$(warning The elftoolchain objcopy is unsuitable for building iPXE)
$(warning Use binutils objcopy instead)
$(error Unsuitable build environment found)
endif
###############################################################################
#
# Check if $(eval ...) is available to use