error: patch failed: aclocal.m4:447
error: aclocal.m4: patch does not apply
error: patch failed: configure:7681
error: configure: patch does not apply
error: patch failed: configure.ac:1498
error: configure.ac: patch does not apply
error: patch failed: math/Makefile:1070
error: math/Makefile: patch does not apply
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Applying: Add test-config-cflags-float-store for -ffloat-store
Patch failed at 0001 Add test-config-cflags-float-store for -ffloat-store