> On 10/02/2018, at 12:07, Justin C. Walker <jus...@mac.com> wrote:
>
>>
>> On Feb 9, 2018, at 00:25 , Volker Braun <vbraun.n...@gmail.com> wrote:
>>
>> As always, you can get the latest beta version from the "develop" git
>> branch. Alternatively, the self-contained source tarball is at
>> http://www.sagemath.org/download-latest.html
>
> Yay for using clang!
>
> Built from a fresh clone/checkout of the develop tree.
>
> The build (macOS 10.11.6, MBP Quad-core Core i7) blows chunks on sqlite:
>
> ==========================
> libtool: compile: gcc -DPACKAGE_NAME=\"sqlite\" -DPACKAGE_TARNAME=\"sqlite\"
> -DPACKAGE_VERSION=\"3.17.0\" "-DPACKAGE_STRING=\"sqlite 3.17.0\
> \"" -DPACKAGE_BUGREPORT=\"http://www.sqlite.org\"; -DPACKAGE_URL=\"\"
> -DPACKAGE=\"sqlite\" -DVERSION=\"3.17.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_T\
> YPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
> -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 \
> -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DHAVE_FDATASYNC=1
> -DHAVE_USLEEP=1 -DHAVE_LOCALTIME_R=1 -DHAVE_GMTIME_R=1 -DHAVE_D\
> ECL_STRERROR_R=1 -DHAVE_STRERROR_R=1 -DHAVE_EDITLINE_READLINE_H=1
> -DHAVE_EDITLINE=1 -I. -I/Users/Sage/sage-8.2.beta5/local/include -D_REENTR\
> ANT=1 -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_RTREE -g -O2
> -MT sqlite3.lo -MD -MP -MF .deps/sqlite3.Tpo -c sqlite3.c -fn\
> o-common -DPIC -o .libs/sqlite3.o
> sqlite3.c:28836:10: error: use of unknown builtin '__builtin_add_overflow'
> [-Wimplicit-function-declaration]
> return __builtin_add_overflow(*pA, iB, pA);
> ^
> ==========================
>
> sqlite log attached.
Ok figured how that one occurred. Xcode version clang differently from linux.
sqlite macro evaluate the version with
#if defined(__clang__) && !defined(_WIN32) && !defined(SQLITE_DISABLE_INTRINSIC)
# define CLANG_VERSION \
(__clang_major__*1000000+__clang_minor__*1000+__clang_patchlevel__)
with clang 3.8 on linux __clang_major__ is 3 but in Xcode 3.8 it is 8.
You can imagine that a test designed to figure that you use clang 4 on linux
will pass with that version of Xcode.
Anyway it is all the wrong way to figure out if you should use the builtin.
Using
https://www.gnu.org/software/autoconf-archive/ax_gcc_builtin.html#ax_gcc_builtin
is a way better idea but that means touching quite a bit of sqlite3.c
François
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