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Makefile: Fix cross-compilation for 32-bit targets

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Determining the correct library installation path (lib vs. lib64)
using uname(1) breaks in cross compilation scenarios where word widths
differ between the host and target system.

Instead, source the information from the compilers '-dumpmachine'
option (supported by both GCC and Clang).

We call this the "host" architecture, using the same nomenclature as
Autotools (--host configure option).

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
This commit is contained in:
Tobias Waldekranz
2022-10-14 21:14:14 +02:00
committed by Andrii Nakryiko
parent 383ffb79a6
commit 68e6f83f22
1 changed files with 2 additions and 1 deletions
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src/Makefile
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@@ -77,7 +77,8 @@ INSTALL = install
DESTDIR ?=
ifeq ($(filter-out %64 %64be %64eb %64le %64el s390x, $(shell uname -m)),)
HOSTARCH = $(firstword $(subst -, ,$(shell $(CC) -dumpmachine)))
ifeq ($(filter-out %64 %64be %64eb %64le %64el s390x, $(HOSTARCH)),)
LIBSUBDIR := lib64
else
LIBSUBDIR := lib