Building LPeg for Lua 5.3.0

[Dirk Laurie <dirk.laurie@...>]

2014-04-15 20:18 GMT+02:00 Roberto Ierusalimschy <roberto@inf.puc-rio.br>:
>> The `lpeg.so` made for Lua 5.2 by `luarocks install lpeg` under Ubuntu 12.04
>> is loaded without error by Lua 5.3.
>>
>> However, the result of running it is not as expected in the case
>> of position matches.
>>
>> [...]
>>
>> If instead I build lpeg from source, obtained by `luarocks download lpeg`
>> and `luarocks unpack lpeg`, changing LUADIR to the
>> 5.3.0-work2 directory, and doing `luarocks --local make`,
>> the same thing happens.
>>
>> If instead of `luarocks --local make` I just say `make`,
>> after `make clean` of course, the same thing happens.
>
> I have been using LPeg with Lua 5.3 for some time, and I did not have
> any of these problems. Your example runs just fine here. As you
> are having the same results as when you ran Lua 5.3 with LPeg for 5.2
> (where those wrong results were expected), it seems that somehow
> your compilation of LPeg is still using the 5.2 header files.
>
>
>> The result seems to be the concatenation of an address and
>> the correct value 4. That address has the same relationship
>> to the address of _G as shown above: last 3 hex digits 008
>> where G has last 3 hex digits 3c0.
>
> This seems a mismatch between the lua_Integer seen by Lua and the one
> seen by LPeg. (LPeg pushes a result with 4 bytes where Lua expects an
> argument with 8.) Another indication that LPeg is not seeing the correct
> header files.
>

This is what appears on my screen:
…/lpeg-0.12$ make
make lpeg.so "DLLFLAGS = -shared -fPIC"
make[1]: Entering directory `/tmp/lpeg/lpeg-0.12-1/lpeg-0.12'
gcc -Wall -Wextra -pedantic -Waggregate-return -Wcast-align
-Wcast-qual -Wdisabled-optimization -Wpointer-arith -Wshadow
-Wsign-compare -Wundef -Wwrite-strings -Wbad-function-cast
-Wdeclaration-after-statement -Wmissing-prototypes -Wnested-externs
-Wstrict-prototypes  -O2 -ansi
-I/mnt/archive/Downloads/lua/lua-5.3.0-work2 -fPIC   -c -o lpvm.o
lpvm.c
gcc -Wall -Wextra -pedantic -Waggregate-return -Wcast-align
-Wcast-qual -Wdisabled-optimization -Wpointer-arith -Wshadow
-Wsign-compare -Wundef -Wwrite-strings -Wbad-function-cast
-Wdeclaration-after-statement -Wmissing-prototypes -Wnested-externs
-Wstrict-prototypes  -O2 -ansi
-I/mnt/archive/Downloads/lua/lua-5.3.0-work2 -fPIC   -c -o lpcap.o
lpcap.c
gcc -Wall -Wextra -pedantic -Waggregate-return -Wcast-align
-Wcast-qual -Wdisabled-optimization -Wpointer-arith -Wshadow
-Wsign-compare -Wundef -Wwrite-strings -Wbad-function-cast
-Wdeclaration-after-statement -Wmissing-prototypes -Wnested-externs
-Wstrict-prototypes  -O2 -ansi
-I/mnt/archive/Downloads/lua/lua-5.3.0-work2 -fPIC   -c -o lptree.o
lptree.c
gcc -Wall -Wextra -pedantic -Waggregate-return -Wcast-align
-Wcast-qual -Wdisabled-optimization -Wpointer-arith -Wshadow
-Wsign-compare -Wundef -Wwrite-strings -Wbad-function-cast
-Wdeclaration-after-statement -Wmissing-prototypes -Wnested-externs
-Wstrict-prototypes  -O2 -ansi
-I/mnt/archive/Downloads/lua/lua-5.3.0-work2 -fPIC   -c -o lpcode.o
lpcode.c
gcc -Wall -Wextra -pedantic -Waggregate-return -Wcast-align
-Wcast-qual -Wdisabled-optimization -Wpointer-arith -Wshadow
-Wsign-compare -Wundef -Wwrite-strings -Wbad-function-cast
-Wdeclaration-after-statement -Wmissing-prototypes -Wnested-externs
-Wstrict-prototypes  -O2 -ansi
-I/mnt/archive/Downloads/lua/lua-5.3.0-work2 -fPIC   -c -o lpprint.o
lpprint.c
env gcc -shared -fPIC lpvm.o lpcap.o lptree.o lpcode.o lpprint.o -o lpeg.so
make[1]: Leaving directory `/tmp/lpeg/lpeg-0.12-1/lpeg-0.12'