Hello, I am kind of new to linux so please be detialed in your replies. I am running Slackware 10.1 and trying to install Skencil but am having some difficulty. I have installed python and the Python Imaging Library so I ran "python setup.py configure" and everything looked fine but when I tried to run "python setup.py build" I got lots of errors and warnings. I am not sure how to fix this and would really apprecaite any help.
Here is the ouput I get when running "python setup.py build":

bash-3.00# python setup.py build
running 'make' in Pax
make: Nothing to be done for `default'.
running 'make' in Filter
make: Nothing to be done for `default'.
running 'make' in Sketch/Modules
gcc -pthread -fPIC -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -I/usr/local/include/python2.4 -I/usr/local/include/python2.4 -I../../Pax -I/usr/include/python2.4 -I/usr/include/ -I/usr/include/ -I/usr/X11R6/include -c ././skimage.c -o ./skimage.o
In file included from /usr/local/include/python2.4/Python.h:8,
from skimage.c:21:
/usr/local/include/python2.4/pyconfig.h:835:1: warning: "_POSIX_C_SOURCE" redefined
In file included from /usr/include/math.h:27,
from skimage.c:20:
/usr/include/features.h:190:1: warning: this is the location of the previous definition
In file included from skimage.c:27:
/usr/include/python2.4/Imaging.h:21:24: ImPlatform.h: No such file or directory
In file included from skimage.c:27:
/usr/include/python2.4/Imaging.h:85: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:85: warning: no semicolon at end of struct or union
/usr/include/python2.4/Imaging.h:86: warning: type defaults to `int' in declaration of `image32'
/usr/include/python2.4/Imaging.h:86: warning: data definition has no type or storage class
/usr/include/python2.4/Imaging.h:98: error: parse error before '}' token
/usr/include/python2.4/Imaging.h:131: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:131: warning: no semicolon at end of struct or union
/usr/include/python2.4/Imaging.h:133: warning: type defaults to `int' in declaration of `cache'
/usr/include/python2.4/Imaging.h:133: warning: data definition has no type or storage class
/usr/include/python2.4/Imaging.h:136: error: parse error before '}' token
/usr/include/python2.4/Imaging.h:227: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:227: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:354: error: parse error before "ImagingCRC32"
/usr/include/python2.4/Imaging.h:354: error: parse error before "crc"
/usr/include/python2.4/Imaging.h:354: warning: type defaults to `int' in declaration of `ImagingCRC32'
/usr/include/python2.4/Imaging.h:354: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:354: warning: data definition has no type or storage class
/usr/include/python2.4/Imaging.h:359: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:359: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:362: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:362: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:364: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:364: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:366: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:366: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:368: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:368: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:370: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:370: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:372: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:372: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:380: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:380: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:386: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:386: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:388: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:388: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:390: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:390: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:392: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:392: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:394: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:394: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:396: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:396: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:398: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:398: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:400: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:400: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:402: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:402: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:404: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:404: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:406: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:406: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:414: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:414: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:417: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:417: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:418: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:418: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:419: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:419: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:420: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:420: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:421: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:421: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:422: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:422: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:423: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:423: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:425: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:425: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:426: error: parse error before '*' token
/usr/include/python2.4/Imaging.h:426: warning: function declaration isn't a prototype
/usr/include/python2.4/Imaging.h:442: error: parse error before "UINT8"
/usr/include/python2.4/Imaging.h:442: warning: no semicolon at end of struct or union
/usr/include/python2.4/Imaging.h:444: error: parse error before '}' token
skimage.c: In function `image_scale_rgb_16':
skimage.c:58: error: `INT32' undeclared (first use in this function)
skimage.c:58: error: (Each undeclared identifier is reported only once
skimage.c:58: error: for each function it appears in.)
skimage.c:58: error: `src' undeclared (first use in this function)
skimage.c:69: error: dereferencing pointer to incomplete type
skimage.c: In function `image_scale_rgb_24':
skimage.c:99: error: `INT32' undeclared (first use in this function)
skimage.c:99: error: `src' undeclared (first use in this function)
skimage.c:118: error: dereferencing pointer to incomplete type
skimage.c: In function `image_scale_rgb_8':
skimage.c:143: error: `INT32' undeclared (first use in this function)
skimage.c:143: error: `src' undeclared (first use in this function)
skimage.c:161: error: dereferencing pointer to incomplete type
skimage.c: In function `image_scale_gray_16':
skimage.c:188: error: `UINT8' undeclared (first use in this function)
skimage.c:188: error: `src' undeclared (first use in this function)
skimage.c:198: error: dereferencing pointer to incomplete type
skimage.c: In function `image_scale_gray_24':
skimage.c:226: error: `UINT8' undeclared (first use in this function)
skimage.c:226: error: `src' undeclared (first use in this function)
skimage.c:244: error: dereferencing pointer to incomplete type
skimage.c: In function `image_scale_gray_8':
skimage.c:267: error: `UINT8' undeclared (first use in this function)
skimage.c:267: error: `src' undeclared (first use in this function)
skimage.c:284: error: dereferencing pointer to incomplete type
skimage.c: In function `scale_image':
skimage.c:314: error: dereferencing pointer to incomplete type
skimage.c:346: error: dereferencing pointer to incomplete type
skimage.c:350: error: dereferencing pointer to incomplete type
skimage.c:354: error: dereferencing pointer to incomplete type
skimage.c:358: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:360: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c:385: error: dereferencing pointer to incomplete type
skimage.c: In function `image_trafo_rgb_16':
skimage.c:447: error: `INT32' undeclared (first use in this function)
skimage.c:447: error: `src' undeclared (first use in this function)
skimage.c:447: error: dereferencing pointer to incomplete type
skimage.c: In function `image_trafo_rgb_24':
skimage.c:480: error: `INT32' undeclared (first use in this function)
skimage.c:480: error: `src' undeclared (first use in this function)
skimage.c:480: error: dereferencing pointer to incomplete type
skimage.c: In function `image_trafo_rgb_8':
skimage.c:522: error: `INT32' undeclared (first use in this function)
skimage.c:522: error: `src' undeclared (first use in this function)
skimage.c:522: error: dereferencing pointer to incomplete type
skimage.c: In function `image_trafo_gray_16':
skimage.c:571: error: `UINT8' undeclared (first use in this function)
skimage.c:571: error: `src' undeclared (first use in this function)
skimage.c:571: error: dereferencing pointer to incomplete type
skimage.c: In function `image_trafo_gray_24':
skimage.c:602: error: `UINT8' undeclared (first use in this function)
skimage.c:602: error: `src' undeclared (first use in this function)
skimage.c:602: error: dereferencing pointer to incomplete type
skimage.c: In function `image_trafo_gray_8':
skimage.c:641: error: `UINT8' undeclared (first use in this function)
skimage.c:641: error: `src' undeclared (first use in this function)
skimage.c:641: error: dereferencing pointer to incomplete type
skimage.c: In function `transform_image':
skimage.c:796: error: dereferencing pointer to incomplete type
skimage.c:832: error: dereferencing pointer to incomplete type
skimage.c:832: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:835: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c:857: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_rgb_xy':
skimage.c:929: error: dereferencing pointer to incomplete type
skimage.c:930: error: dereferencing pointer to incomplete type
skimage.c:933: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_rgb_z':
skimage.c:978: error: dereferencing pointer to incomplete type
skimage.c:979: error: dereferencing pointer to incomplete type
skimage.c:982: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_hsv_xy':
skimage.c:1052: error: dereferencing pointer to incomplete type
skimage.c:1053: error: dereferencing pointer to incomplete type
skimage.c:1056: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_hsv_z':
skimage.c:1090: error: dereferencing pointer to incomplete type
skimage.c:1091: error: dereferencing pointer to incomplete type
skimage.c:1094: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_transformed_tile_gray':
skimage.c:1117: error: `UINT8' undeclared (first use in this function)
skimage.c:1117: error: `dest' undeclared (first use in this function)
skimage.c:1117: error: `src' undeclared (first use in this function)
skimage.c:1117: warning: left-hand operand of comma expression has no effect
skimage.c:1119: error: dereferencing pointer to incomplete type
skimage.c:1120: error: dereferencing pointer to incomplete type
skimage.c:1121: error: dereferencing pointer to incomplete type
skimage.c:1122: error: dereferencing pointer to incomplete type
skimage.c:1123: error: dereferencing pointer to incomplete type
skimage.c:1127: error: parse error before ')' token
skimage.c:1127: error: dereferencing pointer to incomplete type
skimage.c:1130: warning: left-hand operand of comma expression has no effect
skimage.c: In function `fill_transformed_tile_rgb':
skimage.c:1150: error: `INT32' undeclared (first use in this function)
skimage.c:1150: error: `dest' undeclared (first use in this function)
skimage.c:1150: error: `src' undeclared (first use in this function)
skimage.c:1150: warning: left-hand operand of comma expression has no effect
skimage.c:1152: error: dereferencing pointer to incomplete type
skimage.c:1153: error: dereferencing pointer to incomplete type
skimage.c:1154: error: dereferencing pointer to incomplete type
skimage.c:1155: error: dereferencing pointer to incomplete type
skimage.c:1156: error: dereferencing pointer to incomplete type
skimage.c:1160: error: dereferencing pointer to incomplete type
skimage.c:1163: warning: left-hand operand of comma expression has no effect
skimage.c: In function `fill_transformed_tile':
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1188: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1192: error: dereferencing pointer to incomplete type
skimage.c:1199: error: dereferencing pointer to incomplete type
skimage.c: In function `horizontal_axial_gradient':
skimage.c:1329: error: dereferencing pointer to incomplete type
skimage.c:1330: error: dereferencing pointer to incomplete type
skimage.c:1332: error: dereferencing pointer to incomplete type
skimage.c:1340: error: dereferencing pointer to incomplete type
skimage.c:1340: error: dereferencing pointer to incomplete type
skimage.c:1341: error: dereferencing pointer to incomplete type
skimage.c: In function `vertical_axial_gradient':
skimage.c:1349: error: `INT32' undeclared (first use in this function)
skimage.c:1349: error: `dest' undeclared (first use in this function)
skimage.c:1353: error: dereferencing pointer to incomplete type
skimage.c:1354: error: dereferencing pointer to incomplete type
skimage.c:1357: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_axial_gradient':
skimage.c:1422: error: dereferencing pointer to incomplete type
skimage.c:1423: error: dereferencing pointer to incomplete type
skimage.c:1426: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_radial_gradient':
skimage.c:1537: error: dereferencing pointer to incomplete type
skimage.c:1538: error: dereferencing pointer to incomplete type
skimage.c:1541: error: dereferencing pointer to incomplete type
skimage.c: In function `fill_conical_gradient':
skimage.c:1588: error: dereferencing pointer to incomplete type
skimage.c:1589: error: dereferencing pointer to incomplete type
skimage.c:1592: error: dereferencing pointer to incomplete type
skimage.c: In function `skimage_write_ps_hex':
skimage.c:1707: error: dereferencing pointer to incomplete type
skimage.c:1708: error: dereferencing pointer to incomplete type
skimage.c:1709: error: dereferencing pointer to incomplete type
skimage.c:1709: error: dereferencing pointer to incomplete type
skimage.c:1711: error: dereferencing pointer to incomplete type
skimage.c:1712: error: dereferencing pointer to incomplete type
skimage.c:1713: error: dereferencing pointer to incomplete type
skimage.c:1713: error: dereferencing pointer to incomplete type
make: *** [skimage.o] Error 1
exiting because of errors

you are missing this include file, you will have to install whatever package has it to finish compiling ( the other possiblity is you have the include, but it is in a non-standard place where the compiler cannot find it. to find out do the following ( in a console):

updatedb ( will take a few min)
slocate ImPlatform.h

if it repeats it back to you ( along with a location) you will have to tell the compiler where it is ( set your CLFAGS environmental variable to include it ( and example of this is "export CFLAGS="-I/home/joe/myincludes" - this sets that directory to be searched for include files)

__J, thanks for you help, I tried the "export CFLAGS..." and when I went to build I got the same error so I just copied the ImPlatform.h to the /usr/include/python2.4 directory. That might not be the smartest solution....but it worked.

as long as it worked

forgot to mention, you can pass this to configure and make too:

./configure --prefix=/usr CFLAGS="-I/<path to includes>"

or

make CFLAGS="-I/<path to includes>"