How do I fix this libgcrypt cross-compilation error? - linux

Question

I'm trying to cross compile GPG for an ElinOS on a board with an imx6. I have a problem when I compile libgcrypt. First, here's what I do:
export PATH=/opt/elinos/cdk/arm/v7hf/glibc/bin:$PATH
./configure --host=arm-unknown-linux-gnueabihf --build=i686-pc-linux-gnu
make all
The configuration part shows no errors or warning, but the make displays this:
hwf-arm.c:31:3: error: #error Module build for wrong CPU.
# error Module build for wrong CPU.
^
hwf-arm.c: In function 'get_hwcap':
hwf-arm.c:126:26: error: 'AT_HWCAP' undeclared (first use in this function)
if (auxv.a_type == AT_HWCAP)
^
hwf-arm.c:126:26: note: each undeclared identifier is reported only once for each function it appears in
hwf-arm.c:132:26: error: 'AT_HWCAP2' undeclared (first use in this function)
if (auxv.a_type == AT_HWCAP2)
^
In file included from hwf-arm.c:27:0:
hwf-arm.c: In function 'detect_arm_at_hwcap':
hwf-arm.c:159:23: error: 'arm_features' undeclared (first use in this function)
for (i = 0; i < DIM(arm_features); i++)
^
g10lib.h:96:24: note: in definition of macro 'DIM'
#define DIM(v) (sizeof(v)/sizeof((v)[0]))
^
hwf-arm.c: In function 'detect_arm_proc_cpuinfo':
hwf-arm.c:250:23: error: 'arm_features' undeclared (first use in this function)
for (i = 0; i < DIM(arm_features); i++)
^
g10lib.h:96:24: note: in definition of macro 'DIM'
#define DIM(v) (sizeof(v)/sizeof((v)[0]))
The first error leads me to this part of the code :
#if !defined (__arm__) && !defined (__aarch64__)
# error Module build for wrong CPU.
#endif
Any idea where this comes from? It looks like a configuration problem, but I'm not sure where to look now.

Answer 1

In the config.log file, CC was setup correctly: CC='arm-unknown-linux-gnueabihf-gcc'.
Yet I needed to specify it in the make command. So instead of simply using make all, which didn't work, I had to use make all CC=arm-unknown-linux-gnueabihf-gcc.