path: root/support
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authorGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2012-12-29 06:14:49 +0000
committerGravatar Peter Korsgaard <jacmet@sunsite.dk>2013-01-06 21:35:47 +0100
commit70d6037e8a47f7a199345f60790bd5d1618e8207 (patch)
tree3a22158d6a7ae51bccc3652fee0e178b547ee311 /support
parent4eff1f206416a2ade7f5d88375cfd271a4c425c5 (diff)
Infrastructure to warn the user about missing 32 bits libraries
Many users trying to use external toolchains on x86-64 machines get a very confusing message: "Can't execute cross-compiler" They get this message because they forgot to install the 32 bits compatibility libraries that are needed to run binaries compiled for x86 on x86-64 machines. Since this is the case for both external toolchains and certain binary-only tools like SAM-BA, we add a new Kconfig option BR2_HOSTARCH_NEEDS_IA32_LIBS, that packages must select if they need the 32 bits compatibility libraries. When this option is enabled, dependencies.sh checks that the 32 bits dynamic library loader is present on the system, and if not, it stops and shows an error. The path and name of the 32 bits dynamic loader is hardcoded because it is very unlikely to change, as it would break the ABI for all binaries. Also, it is worth noting that the check will be done even if we're running on a 32 bits machine. This is harmless, as 32 bits machines necessarily have the 32 bits dynamic loader installed, so the error will never show up in this case. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Diffstat (limited to 'support')
1 files changed, 12 insertions, 0 deletions
diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
index eb5a481848..ca58450149 100755
--- a/support/dependencies/dependencies.sh
+++ b/support/dependencies/dependencies.sh
@@ -175,3 +175,15 @@ if grep -E '^BR2_TARGET_GENERIC_ROOT_PASSWD=".+"$' $CONFIG_FILE > /dev/null 2>&1
exit 1
+if grep -q ^BR2_HOSTARCH_NEEDS_IA32_LIBS=y $CONFIG_FILE ; then
+ if test ! -f /lib/ld-linux.so.2 ; then
+ /bin/echo -e "\nYour Buildroot configuration uses pre-built tools for the x86 architecture,"
+ /bin/echo -e "but your build machine uses the x86-64 architecture without the 32 bits compatibility"
+ /bin/echo -e "library."
+ /bin/echo -e "If you're running a Debian/Ubuntu distribution, install the libc:i386 package."
+ /bin/echo -e "For other distributions, refer to the documentation on how to install the 32 bits"
+ /bin/echo -e "compatibility libraries."
+ exit 1
+ fi