Started work on pipelines by adding generator test case skeleton.

environment.py

@@ -228,6 +228,7 @@ header_suffixes = ['h', 'hh', 'hpp', 'hxx', 'H']
 class Environment():
     def __init__(self, source_dir, build_dir, main_script_file, options):
         assert(main_script_file[0] == '/')
+        assert(not os.path.islink(main_script_file))
         self.source_dir = source_dir
         self.build_dir = build_dir
         self.meson_script_file = main_script_file
@@ -247,14 +248,7 @@ class Environment():
         self.object_suffix = 'o'
 
     def get_script_dir(self):
-        fullfile = self.meson_script_file
-        while os.path.islink(fullfile):
-            resolved = os.readlink(fullfile)
-            if resolved[0] != '/':
-                fullfile = os.path.join(os.path.dirname(fullfile), resolved)
-            else:
-                fullfile = resolved 
-        return os.path.dirname(fullfile)
+        return os.path.dirname(self.meson_script_file)
 
     def get_build_command(self):
         return self.meson_script_file

meson.py

@@ -112,6 +112,12 @@ if __name__ == '__main__':
     else:
         dir2 = '.'
     this_file = os.path.abspath(__file__)
+    while os.path.islink(this_file):
+        resolved = os.readlink(this_file)
+        if resolved[0] != '/':
+            this_file = os.path.join(os.path.dirname(this_file), resolved)
+        else:
+            this_file = resolved 
     app = MesonApp(dir1, dir2, this_file, options)
     print ('Source dir: ' + app.source_dir)
     print ('Build dir: ' + app.build_dir)

test cases/30 pipeline/input_src.dat

@@ -0,0 +1 @@
+int func() { return 0; }

test cases/30 pipeline/meson.build

@@ -0,0 +1,3 @@
+project('pipeline test', 'c')
+
+e1 = executable('srcgen', 'srcgen.c')

test cases/30 pipeline/prog.c

@@ -0,0 +1,5 @@
+int func();
+
+int main(int argc, char **argv) {
+    return func();
+}

test cases/30 pipeline/srcgen.c

@@ -0,0 +1,33 @@
+#include<stdio.h>
+#include<assert.h>
+
+int main(int argc, char **argv) {
+    const int ARRSIZE = 80;
+    char arr[ARRSIZE];
+    if(argc != 3) {
+        fprintf(stderr, "%s <input file> <output file>\n", argv[0]);
+        return 1;
+    }
+    char *ifilename = argv[1];
+    char *ofilename = argv[2];
+    printf("%s\n", ifilename);
+    FILE *ifile = fopen(ifilename, "r");
+    if(!ifile) {
+        fprintf(stderr, "Could not open source file %s.\n", ifilename);
+        return 1;
+    }
+    FILE *ofile = fopen(ofilename, "w");
+    if(!ofile) {
+        fprintf(stderr, "Could not open target file %s\n", ofilename);
+        return 1;
+    }
+    size_t bytes;
+    bytes = fread(arr, 1, ARRSIZE, ifile);
+    assert(bytes < 80);
+    assert(bytes > 0);
+    fwrite(arr, 1, bytes, ofile);
+
+    fclose(ifile);
+    fclose(ofile);
+    return 0;
+}