Verilator

Compilation fails when Verilator repository is cloned as a git submodule. This can be reproduced with :

mkdir test
cd test 
git init . 
git submodule add http://git.veripool.org/git/verilator
autoconf
./configure 
make -j5

The error message is as follows:

[...]
g++ -I/usr/local/include -MMD -I. -I.. -I.. -I../../include -DYYDEBUG      -ggdb -DVL_DEBUG -MP  -DDEFENV_SYSTEMC=\"\" -DDEFENV_SYSTEMC_ARCH=\"\" -DDEFENV_SYSTEMC_INCLUDE=\"\" -DDEFENV_SYSTEMC_LIBDIR=\"\" -DDEFENV_SYSTEMPERL=\"\" -DDEFENV_SYSTEMPERL_INCLUDE=\"\" -DDEFENV_VERILATOR_ROOT=\"/usr/local/share/verilator\" -c ../V3Options.cpp
../V3Options.cpp:42:24: fatal error: config_rev.h: No such file or directory
compilation terminated.
make[2]: *** [V3Options.o] Error 1
[...]

The failure is due to the line in src/Makefile (or the .in version):

UNDER_GIT = $(wildcard ${srcdir}/../.git/logs/HEAD)

This fails to recognize that in a submodule "../.git" is not a directory anymore but just a file. As a hack to compile, I used:

UNDER_GIT = $(wildcard ${srcdir}/../.git)