Appveyor builds broken for Python 2.7

[cirla]

Not sure why this is breaking for 2.7 but works for 3.6. Example error when compiling:

C:\Users\appveyor\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0\VC\Bin\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -Ilibindicators -Itulipy/lib -IC:\Python27\lib\site-packages\numpy\core\include -IC:\Python27\include -IC:\Python27\PC /Tclibindicators/tiamalgamation.c /Fobuild\temp.win32-2.7\Release\libindicators/tiamalgamation.obj
tiamalgamation.c
libindicators/tiamalgamation.c(1888) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1888) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1888) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1888) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1888) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1888) : error C2065: 'output' : undeclared identifier
libindicators/tiamalgamation.c(1888) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1888) : error C2109: subscript requires array or pointer type
libindicators/tiamalgamation.c(1888) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1889) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1889) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1889) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1889) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1889) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1889) : error C2065: 'output' : undeclared identifier
libindicators/tiamalgamation.c(1889) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1889) : error C2109: subscript requires array or pointer type
libindicators/tiamalgamation.c(1889) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1900) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1901) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1902) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1903) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1903) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1903) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1904) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1904) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1906) : error C2065: 'sum' : undeclared identifier
libindicators/tiamalgamation.c(1906) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1906) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1906) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1906) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1906) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1906) : warning C4244: '+=' : conversion from 'const double' to 'int', possible loss of data
libindicators/tiamalgamation.c(1908) : error C2065: 'output' : undeclared identifier
libindicators/tiamalgamation.c(1908) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1908) : error C2109: subscript requires array or pointer type
libindicators/tiamalgamation.c(1908) : error C2065: 'sum' : undeclared identifier
libindicators/tiamalgamation.c(1912) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1912) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1912) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1912) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1912) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1912) : error C2065: 'output' : undeclared identifier
libindicators/tiamalgamation.c(1912) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1912) : error C2109: subscript requires array or pointer type
libindicators/tiamalgamation.c(1912) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1912) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1927) : error C2143: syntax error : missing ';' before 'const'
libindicators/tiamalgamation.c(1928) : error C2143: syntax error : missing ';' before 'const'
libindicators/tiamalgamation.c(1929) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1930) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1931) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1932) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1932) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1932) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1933) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1933) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1935) : error C2065: 'sum' : undeclared identifier
libindicators/tiamalgamation.c(1935) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1935) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1935) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1935) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1935) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1935) : warning C4244: '+=' : conversion from 'const double' to 'int', possible loss of data
libindicators/tiamalgamation.c(1937) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1938) : error C2065: 'short_ema' : undeclared identifier
libindicators/tiamalgamation.c(1938) : error C2065: 'sum' : undeclared identifier
libindicators/tiamalgamation.c(1939) : error C2065: 'long_ema' : undeclared identifier
libindicators/tiamalgamation.c(1939) : error C2065: 'sum' : undeclared identifier
libindicators/tiamalgamation.c(1941) : error C2065: 'short_ema' : undeclared identifier
libindicators/tiamalgamation.c(1941) : error C2065: 'sum' : undeclared identifier
libindicators/tiamalgamation.c(1941) : error C2065: 'short_ema' : undeclared identifier
libindicators/tiamalgamation.c(1941) : error C2065: 'short_per' : undeclared identifier
libindicators/tiamalgamation.c(1941) : error C2065: 'short_ema' : undeclared identifier
libindicators/tiamalgamation.c(1942) : error C2065: 'long_ema' : undeclared identifier
libindicators/tiamalgamation.c(1942) : error C2065: 'sum' : undeclared identifier
libindicators/tiamalgamation.c(1942) : error C2065: 'long_ema' : undeclared identifier
libindicators/tiamalgamation.c(1942) : error C2065: 'long_per' : undeclared identifier
libindicators/tiamalgamation.c(1942) : error C2065: 'long_ema' : undeclared identifier
libindicators/tiamalgamation.c(1944) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1945) : error C2065: 'output' : undeclared identifier
libindicators/tiamalgamation.c(1945) : error C2100: illegal indirection
libindicators/tiamalgamation.c(1945) : error C2065: 'short_ema' : undeclared identifier
libindicators/tiamalgamation.c(1945) : error C2065: 'long_ema' : undeclared identifier
libindicators/tiamalgamation.c(1945) : error C2106: '=' : left operand must be l-value
libindicators/tiamalgamation.c(1962) : error C2143: syntax error : missing ';' before 'const'
libindicators/tiamalgamation.c(1963) : error C2143: syntax error : missing ';' before 'const'
libindicators/tiamalgamation.c(1964) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1965) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1966) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1967) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1968) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1968) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1968) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1970) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1970) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1970) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1971) : error C2065: 'atr' : undeclared identifier
libindicators/tiamalgamation.c(1971) : warning C4244: '+=' : conversion from 'double' to 'int', possible loss of data
libindicators/tiamalgamation.c(1972) : error C2143: syntax error : missing ';' before 'type'
libindicators/tiamalgamation.c(1973) : error C2065: 'dp' : undeclared identifier
libindicators/tiamalgamation.c(1973) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1973) : error C2065: 'i' : undeclared identifier
libindicators/tiamalgamation.c(1973) : warning C4244: '=' : conversion from 'const double' to 'int', possible loss of data
libindicators/tiamalgamation.c(1973) : error C2065: 'dm' : undeclared identifier
libindicators/tiamalgamation.c(1973) : fatal error C1003: error count exceeds 100; stopping compilation
error: command 'C:\\Users\\appveyor\\AppData\\Local\\Programs\\Common\\Microsoft\\Visual C++ for Python\\9.0\\VC\\Bin\\cl.exe' failed with exit status 2

[xy-labs]

Had the same issue installing with Python 2.7, with all Build Tools installed, on Win 10

No problem with debian or Python 3.6 on Win 10 though!

[cirla]

It seems like an issue with a lack of C99 support in VC9