Andrew Jones <drjones@xxxxxxxxxx> writes:
> Commit 529046c3 "libcflat: add PRI(dux)32 format types" applies a
> detection trick that requires native compiling or cross-compiling
> with newlib, an embedded system C standard library. We can avoid
> the new dependency with a different trick.
>
> Cc: Alex Bennée <alex.bennee@xxxxxxxxxx>
> Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx>
> ---
> configure | 14 +++++---------
> 1 file changed, 5 insertions(+), 9 deletions(-)
>
> diff --git a/configure b/configure
> index 127868ce3090..3045dd129bda 100755
> --- a/configure
> +++ b/configure
> @@ -12,6 +12,7 @@ host=$arch
> cross_prefix=
> endian=""
> pretty_print_stacks=yes
> +u32_long=
>
> usage() {
> cat <<-EOF
> @@ -110,16 +111,11 @@ if [ -f $testdir/run ]; then
> fi
>
> # check if uint32_t needs a long format modifier
> -cat << EOF > lib_test.c
> -#include <inttypes.h>
> +cat << EOF > lib-test.c
> +__UINT32_TYPE__
> EOF
> -
> -$cross_prefix$cc lib_test.c -E | grep "typedef" | grep "long" | grep "uint32_t" &> /dev/null
> -exit=$?
> -if [ $exit -eq 0 ]; then
> - u32_long=true
> -fi
> -rm -f lib_test.c
> +u32_long=$($cross_prefix$cc -E lib-test.c | awk '! /^#/ && $2 == "long" {print "yes"}')
> +rm -f lib-test.c
Hmm this fails on my system as the -E output is:
15:18 alex@overdrive01/aarch64 [kvm-unit-tests-32bit.git/review/drew-config@github] >arm-none-eabi-gcc -E test.c
# 1 "test.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.c"
long unsigned int
Changing the line to:
u32_long=$($cross_prefix$cc -E lib-test.c | awk '! /^#/ && $1 == "long" {print "yes"}')
Fixes the detection for me but I wonder if there are other corner cases
to catch?
The rest of the compile fails later due to un-merged format fixes for
pci_setup_msi which I guess is expected.
>
> # check for dependent 32 bit libraries
> if [ "$arch" != "arm" ]; then
--
Alex Bennée
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