Build process is not multiple jobs safe (cannot be parallel)

[danfe]

It was reported several times in the past that the build might fail at some random stage (e.g. issue #16 also seems to be it). For me it did fail at least in two places.

• Flex/Bison code generation, here's the relevant portion of the build log:

===>  Building for seexpr-2.11
[  1%] Generating SeExprParserLexIn.cpp
[  2%] Generating SeExprParserLexIn.cpp
[  3%] Generating y.tab.c, y.tab.h
[  4%] Generating y.tab.c, y.tab.h
[  5%] Generating SeExprParserLex.cpp
[  6%] Generating SeExprParser.tab.h
[  7%] Generating SeExprParser.cpp
Scanning dependencies of target SeExpr
Scanning dependencies of target SeExpr-static
[  8%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeExpression.o
[  9%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExpression.o
[ 10%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeExprBuiltins.o
[ 11%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExprBuiltins.o
[ 12%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeContext.o
[ 13%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeContext.o
[ 14%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeNoise.o
[ 15%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeExprFunc.o
[ 16%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeNoise.o
[ 17%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeExprNode.o
[ 18%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExprFunc.o
[ 19%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExprNode.o
[ 20%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeCurve.o
[ 21%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeCurve.o
[ 22%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExprParserLex.o
eExprParserLexIn.cpp:1385:16: warning: function 'SeExprinput' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    static int SeExprinput (void)
               ^
1 warning generated.
[ 23%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeExprParserLex.o
SeExprParserLexIn.cpp:1385:16: warning: function 'SeExprinput' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    static int SeExprinput (void)
               ^
1 warning generated.
[ 24%] Building CXX object src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExprParser.o
[ 25%] Building CXX object src/SeExpr/CMakeFiles/SeExpr.dir/SeExprParser.o
y.tab.c:2334:3: error: use of undeclared identifier 'SeExprYYLLOC_'
  SeExprYYLLOC_
  ^
y.tab.c:2334:16: error: expected '}'
  SeExprYYLLOC_
               ^
y.tab.c:1532:1: note: to match this '{'
{
^
y.tab.c:1675:2: error: use of undeclared label 'SeExprabortlab'
        SeExprYYABORT;
        ^
y.tab.c:894:29: note: expanded from macro 'SeExprYYABORT'
#define SeExprYYABORT           goto SeExprabortlab
                                     ^
y.tab.c:1646:7: error: use of undeclared label 'SeExprexhaustedlab'
        goto SeExprexhaustedlab;
             ^
y.tab.c:1681:5: error: use of undeclared label 'SeExpracceptlab'
    SeExprYYACCEPT;
    ^
y.tab.c:893:29: note: expanded from macro 'SeExprYYACCEPT'
#define SeExprYYACCEPT  goto SeExpracceptlab
                             ^
5 errors generated.
--- src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExprParser.o ---
*** [src/SeExpr/CMakeFiles/SeExpr-static.dir/SeExprParser.o] Error code 1

• Premature linking:

--- src/demos/CMakeFiles/asciiCalc.dir/all ---
--- src/demos/asciiCalc ---
[ 47%] Linking CXX executable asciiCalC
cd /wrkdirs/graphics/seexpr/SeExpr-36ffb818b8/src/demos && /usr/local/bin/cmake -E cmake_link_scri
pt CMakeFiles/asciiCalc.dir/link.txt --verbose=1
/usr/bin/c++   -fPIC  -pipe -O2 -fno-strict-aliasing -I/usr/local/include   CMakeFiles/asciiCalc.d
ir/asciiCalculator.o  -o asciiCalc  ../SeExpr/libSeExpr.so -lpthread -Wl,-rpath,/wrkdirs/graphics/
seexpr/SeExpr-36ffb818b8/src/SeExpr
../SeExpr/libSeExpr.so: error: undefined reference to 'SeExprpos()'
../SeExpr/libSeExpr.so: error: undefined reference to 'SeExprtext'
../SeExpr/libSeExpr.so: error: undefined reference to 'SeExprlex()'
../SeExpr/libSeExpr.so: error: undefined reference to 'resetCounters(std::vector<char*, std::alloc
ator<char*> >*)'
../SeExpr/libSeExpr.so: error: undefined reference to 'SeExpr_scan_string(char const*)'
../SeExpr/libSeExpr.so: error: undefined reference to 'SeExpr_delete_buffer(SeExpr_buffer_state*)'
../SeExpr/libSeExpr.so: error: undefined reference to 'SeExprlex_destroy()'
*** [src/demos/asciiCalc] Error code 1

[davvid]

This may no longer be an issue but please holler if you observe otherwise.

[danfe]

Usually, when closing bug reports like this, a courtesy of citing particular commit(s) that [might] had addressed the raised issue(s) is expected, but I'll check, yes.