error: expected unqualified-id before '(' token

[lrusak]

Any idea what this is about?

/home/lukas/libreelec/build.LibreELEC-HiFive.riscv64-9.0-devel/riscv-fesvr-f683e01/fesvr/encoding.h:178:29: error: expected unqualified-id before '(' token
 #define write_csr(reg, val) ({ \
                             ^
/home/lukas/libreelec/build.LibreELEC-HiFive.riscv64-9.0-devel/riscv-fesvr-f683e01/fesvr/dtm.cc:393:17: note: in expansion of macro 'write_csr'
 uint64_t dtm_t::write_csr(unsigned which, uint64_t data)
                 ^~~~~~~~~

build log http://sprunge.us/LTBO

./build.LibreELEC-HiFive.riscv64-9.0-devel/toolchain/bin/riscv64-libreelec-linux-gnu-g++ --version
riscv64-libreelec-linux-gnu-g++-7.2.0 (GCC) 7.2.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[Redleaf23477]

Hello,

write_csr is both used as macro (in encoding.h, line 198) and as function name (in dtm.cc, line 405), resulting in a compile error.

My solution (not a clever solution, though) is to comment the #include "encoding.h" and add #define CSR_DSCRATCH 0x7b2 in dtm.cc. Since CSR_DSCRATCH is a constant needed in dtm.cc defined in encoding.h but including encoding.h will cause naming conflict.

i.e. in dtm.cc
replace this

#include "dtm.h"
#include "debug_defines.h"
#include "encoding.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <pthread.h>

with this

#include "dtm.h"
#include "debug_defines.h"
// #include "encoding.h"
#define CSR_DSCRATCH 0x7b2
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <pthread.h>

Hope that there will be a bug fix soon!

---

Update 1: I put my compiling notes and a script to compile riscv-isa-sim in my repo. Hope it helps!