1 files changed, 32 insertions, 0 deletions

diff --git a/autoconfig.cpp b/autoconfig.cpp
index 28362ec..9d09412 100644
--- a/autoconfig.cpp
+++ b/autoconfig.cpp
@@ -13,6 +13,35 @@ bool testCpp( const char *prog )
     return pclose(pop) == 0;
 }
 
+bool testLib( const char *lib, const char *symname, const char *humname )
+{
+    printf("Detecting library %s (-l%s)...", humname, lib );
+    fflush( stdout );
+    static const char *prog = "int main () { return 0; }";
+    char *cmdline = (char *)malloc( 29+strlen(lib) );
+    strcpy( cmdline, "g++ -x c++ -l");
+    strcat( cmdline, lib );
+    strcat( cmdline, " - -o /dev/null");
+
+    FILE *pop = popen( cmdline, "w");
+    fwrite( prog, 1, strlen( prog ), pop );
+    free( cmdline );
+    if( pclose(pop) == 0 )
+    {
+        printf("found.\n");
+        fprintf( fOut, "#define BU_FEATURE_%s 1\n", symname );
+        fprintf( fOut, "#define BU_HAS_%s\n", symname );
+        return false;
+    }
+    else
+    {
+        printf("missing.\n");
+        fprintf( fOut, "#define BU_FEATURE_%s 0\n", symname );
+        fprintf( fOut, "#define BU_MISSING_%s\n", symname );
+        return true;
+    }
+}
+
 void detectEndianness()
 {
     printf("Detecting endian support...");
@@ -59,6 +88,9 @@ int main( int argc, char *argv[] )
             );
 
         detectEndianness();
+        testLib("z", "DEFLATE", "Deflate");
+        testLib("bz2", "BZIP2", "BZip2");
+        testLib("lzma", "LZMA", "Lzma");
 
         fprintf( fOut, "#endif\n");
     }