diff --git a/Lib/Makefile b/Lib/Makefile
index 0ef56c3..9f4d8b5 100644
--- a/Lib/Makefile
+++ b/Lib/Makefile
@@ -199,7 +199,10 @@ testbmp:	testbmp.c $(DEPS)  ../libtthimage.a
 essais.o:	essais.c	$(DEPS) essais.h
 	gcc $(CFLAGS) $< -c
 
-testtga:	testtga.c $(DEPS) ../libtthimage.a essais.o
+testtga.o:	testtga.c testtga.c $(DEPS) 
+	gcc $(CFLAGS) $< -c
+
+testtga:	testtga.o ../libtthimage.a essais.o
 	gcc $(CFLAGS) $< essais.o ../libtthimage.a -lm -o $@
 
 #-----------------------------------------------------------------
diff --git a/Lib/alpha2.c b/Lib/alpha2.c
index 2a8c266..6d02a51 100644
--- a/Lib/alpha2.c
+++ b/Lib/alpha2.c
@@ -8,7 +8,7 @@
 #include  <stdio.h>
 #include  <stdlib.h>
 #include  <string.h>
-#include  "tthimage.h"
+#include  "../tthimage.h"
 
 /*::------------------------------------------------------------------::*/
 int	Image_alpha_setvalue(Image_Desc *dst, int v_alpha)
diff --git a/Lib/gamma.c b/Lib/gamma.c
index 1578849..0720d73 100644
--- a/Lib/gamma.c
+++ b/Lib/gamma.c
@@ -5,7 +5,7 @@
 
 #include  <stdio.h>
 #include  <math.h>
-#include  "tthimage.h"
+#include  "../tthimage.h"
 
 /*::------------------------------------------------------------------::*/
 /*
@@ -32,5 +32,3 @@ for (foo=0; foo<256; foo++)
 return FULL_NUCKED;
 }
 /*::------------------------------------------------------------------::*/
-
-/*::------------------------------------------------------------------::*/
diff --git a/Lib/pcx.c b/Lib/pcx.c
index 8ed4728..85f5210 100644
--- a/Lib/pcx.c
+++ b/Lib/pcx.c
@@ -22,7 +22,7 @@
 #define  DEBUG_LEVEL  1
 #endif
 
-#include  "tthimage.h"   
+#include  "../tthimage.h"
 
 /*::------------------------------------------------------------------::*/
 #define LIBPCX_VERSION   "0.0.12"
diff --git a/Lib/readjpeg.c b/Lib/readjpeg.c
index 061d89b..b25582f 100644
--- a/Lib/readjpeg.c
+++ b/Lib/readjpeg.c
@@ -8,13 +8,18 @@
 
 #include  <stdio.h>
 
+#include  <jpeglib.h>			/* XXX to be checked ? */
+
 #include  "../tthimage.h"
 
 /*::------------------------------------------------------------------::*/
 int try_to_read_a_jpeg_file(char *fname, Image_Desc *img)
 {
 
-fprintf(stderr, ">>> %s ( %s %p )\n", __func__, fname, img);
+fprintf(stderr, ">>> %s ( '%s' %p )\n", __func__, fname, img);
+fprintf(stderr, "    %s compiled %s at %s\n", __FILE__, __DATE__, __TIME__);
+
+fprintf(stderr, "    JPEG_LIB_VERSION = %d\n", JPEG_LIB_VERSION);
 
 return FULL_NUCKED;
 }
diff --git a/Lib/testtga.c b/Lib/testtga.c
index 1e1b69c..7b566ac 100644
--- a/Lib/testtga.c
+++ b/Lib/testtga.c
@@ -15,6 +15,17 @@
 
 /*::------------------------------------------------------------------::*/
 
+int test_du_jpeg_reader(char *filename)
+{
+Image_Desc	destimg;
+int		foo;
+
+fprintf(stderr, ">>> %s ( '%s' ) \n", __func__, filename);
+
+foo = try_to_read_a_jpeg_file(filename, &destimg);
+
+return FULL_NUCKED;
+}
 /*::------------------------------------------------------------------::*/
 int main(int argc, char *argv[])
 {
@@ -23,7 +34,10 @@ int	foo;
 
 printf("\n==========  TestTga  %s  %s  ==========\n", __DATE__, __TIME__);
 Image_print_version(2);
-/* Image_print_sizeof_structs("tth was here"); */
+
+#if DEBUG_LEVEL
+Image_print_sizeof_structs("tth was here");
+#endif
 
 if (argc != 2)
 	{
@@ -38,15 +52,16 @@ else
 
 Image_start_chrono("Essai", 0);
 
+foo = test_du_jpeg_reader("in.jpeg");
+fprintf(stderr, "    essai lecture jpeg -> %d\n", foo);
 
+
+#if 0
 foo = Test_Dithering(fichier, 17);
 fprintf(stderr, "essai dithering -> %d\n", foo);
 
-#if 0
-/*
 Test_des_patterns("/tmp/pattt", 0, 0);
 foo = Essai_des_jauges(fichier, 17);
- */
 
 foo = Essai_Extractbits(fichier, 17);
 
diff --git a/Tools/README.md b/Tools/README.md
index ac0be1d..d96b831 100644
--- a/Tools/README.md
+++ b/Tools/README.md
@@ -45,9 +45,11 @@ Paramètres mal documentés.
 
 ## tga_dither
 
+Comment drastiquement réduire le nombre de couleurs d'une image ?
+
 ## tga_export
 
-Attendu avec impatience, il aura le support complet des PNG.
+Attendu avec impatience, il aura le support complet des PNG. Un jour...
 
 ## tga_effects
 
@@ -82,4 +84,4 @@ tth@konrad:~/Devel/libtthimage$
 
 ## genplot2
 
-
+Outil de tracé pseudo-générique et farci de bugs. WIP ME HARDLY !
diff --git a/Tools/genplot2.c b/Tools/genplot2.c
index 752b76e..c656d29 100644
--- a/Tools/genplot2.c
+++ b/Tools/genplot2.c
@@ -149,16 +149,15 @@ else			filename = argv[optind];
 if (argc<=optind+1)	image = "image.tga";
 else			image = argv[optind+1];
 
+/*----------- giving to the yuser some useless informations --- */
+#if DEBUG_LEVEL
+fprintf(stderr, "*** Genplot2 v 1.0.10 (dwtfywl) 1995,2010,2022 TontonTh \n");
+#endif
 if (verbeux) {
 	fprintf(stderr, "argc %d optind %d  file '%s' image '%s'\n",
 			argc, optind, filename, image);
 	fprintf(stderr, "    picsize : %d %d\n", outw, outh);
 	}
-/*----------- giving to the yuser some useless informations --- */
-#if DEBUG_LEVEL
-fprintf(stderr, "*** Genplot2 v 1.0.9 (dwtfywl) 1995,2010,2022 TontonTh \n");
-fprintf(stderr, "    picsize : %d %d\n", outw, outh);
-#endif
 
 /*----------- opening input file and getting MIN and MAX values */