From 361d6454c034a920f2c96517c277990d390b9652 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Thu, 1 Jul 2021 23:00:19 +0200 Subject: Correctly determine libc.so 'OUTPUT_FORMAT' when cross-compiling. Commit 87d583c6e8cd0e49f64da76636ebeec033298b4d replaces the sed script with an "objdump -f" invocation to determine the 'OUTPUT_FORMAT' bit of the libc.so linker script. However, when cross-compiling, for example from x86_64-linux-gnu to aarch64-linux-gnu, "objdump -f" would report the wrong format ("elf64-little"). Conversely, "aarch64-linux-gnu-objdump -f" reports "elf64-littleaarch64" as expected. This patch changes 'configure.ac' to use AC_CHECK_TOOL rather than '$CC -print-prog-name=objdump' to determine the value of the OBJDUMP variable. That way, OBJDUMP is set to TRIPLET-objdump when cross-compiling for TRIPLET. Reviewed-by: Carlos O'Donell Tested-by: Carlos O'Donell --- configure.ac | 1 + 1 file changed, 1 insertion(+) (limited to 'configure.ac') diff --git a/configure.ac b/configure.ac index eb5bc6a131..973fe59e81 100644 --- a/configure.ac +++ b/configure.ac @@ -52,6 +52,7 @@ fi AC_SUBST(cross_compiling) AC_PROG_CPP AC_CHECK_TOOL(READELF, readelf, false) +AC_CHECK_TOOL(OBJDUMP, objdump, false) # We need the C++ compiler only for testing. AC_PROG_CXX -- cgit 1.4.1