Update .github/workflows/build-macos.yml

Update action runner for MacOS to macos-latest

.gitea/workflows/build-windows.yml

@@ -63,6 +63,15 @@ jobs:
           echo "SHORT_SHA=${SHORT_SHA}" >> $GITHUB_ENV
           mv Argyll_V*_win64_exe.zip "Argyll_${TAG}_${SHORT_SHA}_win64_exe.zip"
           
+      - name: Verify Package Contents
+        run: |
+          ZIP_FILE=$(ls Argyll_*_win64_exe.zip)
+          echo "Verifying contents of ${ZIP_FILE}..."
+          unzip -l "${ZIP_FILE}" | grep "usb/ArgyllCMS.inf"
+          unzip -l "${ZIP_FILE}" | grep "usb/bin/amd64/libusb0.sys"
+          unzip -l "${ZIP_FILE}" | grep "doc/ArgyllDoc.html"
+          unzip -l "${ZIP_FILE}" | grep "ReadMe.txt"
+
       - name: Upload Artifact
         uses: actions/upload-artifact@v3
         with:

.github/workflows/build-macos.yml

@@ -11,11 +11,11 @@ jobs:
     strategy:
       matrix:
         include:
-          - os: macos-15-intel
+          - os: macos-latest
             arch: x86_64
             machtype: x86_64-apple-darwin
             artifact: macOS_x86_64_bin
-          - os: macos-15
+          - os: macos-latest
             arch: arm64
             machtype: arm64-apple-darwin
             artifact: macOS_arm64_bin
@@ -43,6 +43,16 @@ jobs:
           export CCOPTFLAG="-O0"
           jam -q -d2 -fJambase -j1 -sBUILTIN_TIFF=true -sBUILTIN_JPEG=true -sBUILTIN_PNG=true -sBUILTIN_Z=true -sBUILTIN_SSL=true install
           
+      - name: Ad-hoc Sign & Verify Binaries
+        run: |
+          for f in bin/*; do
+            if [ -f "$f" ] && file "$f" | grep -q "Mach-O"; then
+              echo "Ad-hoc signing $f"
+              codesign -f -s - "$f"
+              codesign -dvv "$f"
+            fi
+          done
+
       - name: Smoke Tests
         env:
           ARGYLL_NOT_INTERACTIVE: "1"
@@ -64,6 +74,12 @@ jobs:
           echo "SHORT_SHA=${SHORT_SHA}" >> $GITHUB_ENV
           mv Argyll_V*_${{ matrix.artifact }}.tgz "Argyll_${TAG}_${SHORT_SHA}_${{ matrix.artifact }}.tgz"
           
+      - name: Upload Raw Binaries
+        uses: actions/upload-artifact@v4
+        with:
+          name: raw-bin-${{ matrix.arch }}
+          path: bin/
+          
       - name: Upload Artifact
         uses: actions/upload-artifact@v4
         with:
@@ -77,3 +93,103 @@ jobs:
           name: Release ${{ github.ref_name }}
           body: "Release ${{ github.ref_name }} built from commit ${{ github.sha }}"
           files: Argyll_*_${{ matrix.artifact }}.tgz
+
+  universal:
+    needs: build
+    runs-on: macos-15
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Download x86_64 binaries
+        uses: actions/download-artifact@v4
+        with:
+          name: raw-bin-x86_64
+          path: raw-bin-x86_64
+
+      - name: Download arm64 binaries
+        uses: actions/download-artifact@v4
+        with:
+          name: raw-bin-arm64
+          path: raw-bin-arm64
+
+      - name: Create Universal Binaries
+        run: |
+          mkdir -p bin
+          for file in raw-bin-arm64/*; do
+            bin_name=$(basename "$file")
+            if [ -f "raw-bin-x86_64/$bin_name" ]; then
+              if file "raw-bin-arm64/$bin_name" | grep -q "Mach-O" && file "raw-bin-x86_64/$bin_name" | grep -q "Mach-O"; then
+                echo "Creating universal binary with lipo: $bin_name"
+                lipo -create "raw-bin-x86_64/$bin_name" "raw-bin-arm64/$bin_name" -output "bin/$bin_name"
+                chmod +x "bin/$bin_name"
+                codesign -f -s - "bin/$bin_name"
+              else
+                echo "Non Mach-O file, copying directly: $bin_name"
+                cp "$file" "bin/$bin_name"
+              fi
+            else
+              echo "Warning: $bin_name not found in raw-bin-x86_64, copying arm64 version"
+              cp "$file" "bin/$bin_name"
+              if file "bin/$bin_name" | grep -q "Mach-O"; then
+                codesign -f -s - "bin/$bin_name"
+              fi
+            fi
+          done
+          for file in raw-bin-x86_64/*; do
+            bin_name=$(basename "$file")
+            if [ ! -f "bin/$bin_name" ]; then
+              echo "Warning: $bin_name only found in raw-bin-x86_64, copying x86_64 version"
+              cp "$file" "bin/$bin_name"
+              if file "bin/$bin_name" | grep -q "Mach-O"; then
+                codesign -f -s - "bin/$bin_name"
+              fi
+            fi
+          done
+
+      - name: Verify Architecture & Code Signatures
+        env:
+          ARGYLL_NOT_INTERACTIVE: "1"
+          ARGYLL_EXCLUDE_SERIAL_SCAN: "1"
+        run: |
+          echo "=== Binary Architecture & Signature Verification ==="
+          for file in bin/*; do
+            if [ -f "$file" ] && file "$file" | grep -q "Mach-O"; then
+              file "$file"
+              codesign -dvv "$file"
+            fi
+          done
+          echo "=== Smoke Tests ==="
+          ./bin/dispcal -? || true
+          ./bin/chartread -? || true
+          ./bin/colprof -? || true
+          ./bin/targen -? || true
+
+      - name: Package Universal Release
+        run: |
+          export OSTYPE=darwin
+          export MACHTYPE=universal-apple-darwin
+          export HOSTTYPE=universal
+          export NO_BUILD=1
+          ./makepackagebin.sh
+          TAG="${{ github.ref_name }}"
+          SHORT_SHA="$(git rev-parse --short HEAD)"
+          echo "SHORT_SHA=${SHORT_SHA}" >> $GITHUB_ENV
+          mv Argyll_V*_macOS_universal_bin.tgz "Argyll_${TAG}_${SHORT_SHA}_macOS_universal_bin.tgz"
+
+      - name: Upload Universal Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: Argyll_${{ github.ref_name }}_${{ env.SHORT_SHA }}_macOS_universal_bin
+          path: Argyll_*_macOS_universal_bin.tgz
+
+      - name: Upload Universal Release Asset
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: softprops/action-gh-release@v2
+        with:
+          name: Release ${{ github.ref_name }}
+          body: "Release ${{ github.ref_name }} built from commit ${{ github.sha }}"
+          files: Argyll_*_macOS_universal_bin.tgz

.github/workflows/build-windows.yml

@@ -65,6 +65,15 @@ jobs:
           echo "SHORT_SHA=${SHORT_SHA}" >> $GITHUB_ENV
           mv Argyll_V*_win64_exe.zip "Argyll_${TAG}_${SHORT_SHA}_win64_exe.zip"
           
+      - name: Verify Package Contents
+        run: |
+          ZIP_FILE=$(ls Argyll_*_win64_exe.zip)
+          echo "Verifying contents of ${ZIP_FILE}..."
+          unzip -l "${ZIP_FILE}" | grep "usb/ArgyllCMS.inf"
+          unzip -l "${ZIP_FILE}" | grep "usb/bin/amd64/libusb0.sys"
+          unzip -l "${ZIP_FILE}" | grep "doc/ArgyllDoc.html"
+          unzip -l "${ZIP_FILE}" | grep "ReadMe.txt"
+
       - name: Upload Artifact
         uses: actions/upload-artifact@v4
         with:

doc/ChangesSummary.html

@@ -19,6 +19,9 @@
     <h1>[V3.4.1 -&gt; V3.5.0] 4th February 2026<br>
     </h1>
     <ul>
+      <li>Added macOS Universal Binary release archive (Intel x86_64 + Apple Silicon arm64).</li>
+      <li>Fixed non-blocking stdin polling deadlock on MSWindows anonymous pipes when running interactive measurement tools in subprocess mode.</li>
+      <li>Added -d switch to printtarg to allow custom chart label strings or omit labelling entirely.</li>
       <li>Added MSWindows ARM release.</li>
       <li>Added Mac ARM release.</li>
       <li>Removed Mac PowerPC build from release.</li>

doc/printtarg.html

@@ -264,6 +264,7 @@ channels
 
 
       Dither 8 bit TIFF values down from 16 bit<br>
+      &nbsp;<a href="#d">-d "string"</a>&nbsp;&nbsp;&nbsp; Custom target label string, or "" to omit labelling<br>
       &nbsp;<a href="#Q">-Q nbits</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 Quantize
 test
@@ -758,6 +759,12 @@ A3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     to use it to verify the overall operation of the printing system), then you
     can use the <b>-U</b> flag to disable this.<br>
     <br>
+    <a name="d"></a> The <b>-d</b> parameter allows specifying a custom
+    chart description/label string to be printed along the page/strip borders on
+    generated test target files (TIFF, PostScript, EPS), replacing the default
+    generated chart identifier. If an empty string is provided (<b>-d ""</b>),
+    chart labelling along the page borders is suppressed entirely.<br>
+    <br>
     <a name="p"></a> The <b>-p</b> parameter specifies the paper size. The size
     can either be one of the default sizes, <a name="pp"></a>or can be
     specified in millimeters. Limitations of the instrument may limit the

makepackagebin.sh

@@ -7,7 +7,7 @@ echo "Script to invoke Jam and then package the binary release."
 PRODUCT=Argyll
 
 # Set the environment string VERSION from the #define, ie 1.0.0
-VERSION=`grep ARGYLL_VERSION_STR h/aconfig.h | head -1 | sed 's/# define ARGYLL_VERSION_STR //' | sed 's/"//g'`
+VERSION=`grep ARGYLL_VERSION_STR h/aconfig.h | head -1 | sed 's/# define ARGYLL_VERSION_STR //' | sed 's/\"//g'`
 
 #   Typical environment variables:
 #   (NOTE some systems don't export these ENV vars. by default !!!)
@@ -113,6 +113,13 @@ else if [ "${OSTYPE#*darwin*}" != "$OSTYPE" ] ; then
 		echo "We're on MacOS arm64!"
 		PACKAGE=${PRODUCT}_V${VERSION}_macOS_arm64_bin.tgz
 		export MACOSX_DEPLOYMENT_TARGET="11.0"	# Minimum target platform version
+	else if [ X$HOSTTYPE = "Xuniversal" \
+		  -o X$MACHTYPE = "Xuniversal-apple-darwin" \
+		  -o X$COMPILER = "XUNIVERSAL" ] ; then
+		echo "We're on MacOS Universal!"
+		PACKAGE=${PRODUCT}_V${VERSION}_macOS_universal_bin.tgz
+		export MACOSX_DEPLOYMENT_TARGET="10.15"	# Minimum target platform version
+	fi
 	fi
 	fi
 	fi
@@ -145,35 +152,56 @@ fi
 
 echo "Making GNU $PRODUCT binary distribution $PACKAGE for Version $VERSION"
 
-# Clean up so we get a solid build
-# .sp come from profile, .cht from scanin and .ti3 from spectro
-rm -f bin/*.exe bin/*.dll
-rm -f ref/*.sp ref/*.cht ref/*.ti2
+if [ X$NO_BUILD = "X" ] ; then
+	# Clean up so we get a solid build
+	# .sp come from profile, .cht from scanin and .ti3 from spectro
+	rm -f bin/*.exe bin/*.dll
+	rm -f ref/*.sp ref/*.cht ref/*.ti2
 
-if [ X$CROSS_COMPILE = "X" ] ; then		# If not cross compiling
-  echo "Cleaning before build ..."
-  if ! jam -fJambase -sBUILTIN_TIFF=true -sBUILTIN_JPEG=true -sBUILTIN_PNG=true -sBUILTIN_Z=true -sBUILTIN_SSL=true clean ; then
-    	echo "Clean failed!"
-  	exit 1
-  fi 
-fi
+	if [ X$CROSS_COMPILE = "X" ] ; then		# If not cross compiling
+	  echo "Cleaning before build ..."
+	  if ! jam -fJambase -sBUILTIN_TIFF=true -sBUILTIN_JPEG=true -sBUILTIN_PNG=true -sBUILTIN_Z=true -sBUILTIN_SSL=true clean ; then
+	    	echo "Clean failed!"
+	  	exit 1
+	  fi 
+	fi
 
-# Make sure it's built and installed
-if ! jam -q -fJambase -j${NUMBER_OF_PROCESSORS:-1} -sBUILTIN_TIFF=true -sBUILTIN_JPEG=true -sBUILTIN_PNG=true -sBUILTIN_Z=true -sBUILTIN_SSL=true install ; then
-	echo "Build failed!"
-	exit 1
+	# Make sure it's built and installed
+	if ! jam -q -fJambase -j${NUMBER_OF_PROCESSORS:-1} -sBUILTIN_TIFF=true -sBUILTIN_JPEG=true -sBUILTIN_PNG=true -sBUILTIN_Z=true -sBUILTIN_SSL=true install ; then
+		echo "Build failed!"
+		exit 1
+	fi 
 fi 
 
+# Apply ad-hoc code signatures to macOS Mach-O binaries before staging
+if [ "${OSTYPE#*darwin*}" != "$OSTYPE" ] ; then
+	echo "=== Applying ad-hoc code signatures to macOS Mach-O binaries ==="
+	for f in bin/* ; do
+		if [ -f "$f" ] && file "$f" | grep -q "Mach-O" ; then
+			echo "Signing $f..."
+			codesign -f -s - "$f" || true
+		fi
+	done
+fi
+
 rm -rf $TOPDIR
 mkdir $TOPDIR
 
+# Ensure catalog copies exist if needed for Windows packaging
+if [ -d usb ] ; then
+	if [ -f usb/ArgyllCMS.cat ] ; then
+		[ ! -f usb/ArgyllCMS_x64.cat ] && cp usb/ArgyllCMS.cat usb/ArgyllCMS_x64.cat
+		[ ! -f usb/ArgyllCMS_arm64.cat ] && cp usb/ArgyllCMS.cat usb/ArgyllCMS_arm64.cat
+	fi
+fi
+
 # Collect the names of all the files that we're going to package
-unset topfiles; for i in `cat binfiles`; do topfiles="$topfiles ${i}"; done
-unset docfiles; for i in `cat doc/afiles`; do docfiles="$docfiles doc/${i}"; done
+unset topfiles; for i in `tr -d '\r' < binfiles`; do topfiles="$topfiles ${i}"; done
+unset docfiles; for i in `tr -d '\r' < doc/afiles`; do docfiles="$docfiles doc/${i}"; done
 unset usbfiles;
 for j in ${USBDIRS}; do
 	if [ ${j} ]; then
-		for i in `cat ${j}/${USBBINFILES}`; do usbfiles="$usbfiles ${j}/${i}"; done
+		for i in `tr -d '\r' < ${j}/${USBBINFILES}`; do usbfiles="$usbfiles ${j}/${i}"; done
 	fi
 done
 
@@ -183,16 +211,16 @@ allfiles="${topfiles} bin/* ref/* ${docfiles} ${usbfiles}"
 for i in ${allfiles}; do
 	path=${i%/*}		# extract path without filename
 	file=${i##*/}		# extract filename
-	if [ $path = $i ] ; then
+	if [ "$path" = "$i" ] ; then
 		path=
 	fi
-	if [ X$path != "X" ] ; then
-		mkdir -p $TOPDIR/${path}
+	if [ X"$path" != "X" ] ; then
+		mkdir -p "$TOPDIR/${path}"
 	fi
-	if [ X${file} = "Xafiles" ] ; then
+	if [ X"${file}" = "Xafiles" ] ; then
 		continue
 	fi
-	cp $i $TOPDIR/$i
+	cp "$i" "$TOPDIR/$i" || { echo "Failed to copy $i to $TOPDIR/$i"; exit 1; }
 done
 
 # Create the package

spectro/conv.c

@@ -203,36 +203,37 @@ static int con_char(int wait) {
 		/* We assume pipe has been set to NOWAIT mode. */
 		} else if (stdin_type == FILE_TYPE_PIPE) {
 			int i, bib;
-//fprintf(stderr,"~1  top of pipe\n");
+			DWORD bytes_avail = 0;
+
+			/* Check available bytes in pipe before blocking */
+			if (!PeekNamedPipe(stdinh, NULL, 0, NULL, &bytes_avail, NULL) || bytes_avail == 0) {
+				if (!wait) {
+					return 0;
+				}
+			}
 
 			for (bib = 0; bib < 10;) {
-//fprintf(stderr,"~1  got %d in buf\n",bib);
+				if (!wait) {
+					if (!PeekNamedPipe(stdinh, NULL, 0, NULL, &bytes_avail, NULL) || bytes_avail == 0) {
+						break;
+					}
+				}
 				if ((!ReadFile(stdinh, buf + bib, 10 - bib, &bread, NULL) || bread == 0)
 				 && !wait) {
-//fprintf(stderr,"~1  no chars waiting\n");
 					break;
 				}
 				bib += bread;
 
 				for (i = 0; i < bib; i++) {
 					if (buf[i] == '\n' || buf[i] == '\r' || buf[i] == 0x3) {
-//fprintf(stderr,"~1  found lf at ix %d\n",i);
 						break;
 					}
 				}
 				if (i < bib) {
-//fprintf(stderr,"~1  found lf\n");
 					break;		/* Found '\n' */
 				}
 				Sleep(100);		/* Wait for a line ending in '\n' */
 			}
-
-//if (bread > 0) {
-//fprintf(stderr,"~1  read %d: ",bread);
-//for (i = 0; i < bread; i++)
-//fprintf(stderr," 0x%x",buf[i]);
-//fprintf(stderr,"\n//");
-//}
 			rv = buf[0];
 
 		/* Assume a file. This will have very limited functionality. */

target/printtarg.c

@@ -463,6 +463,29 @@ static void ps_hexagon(trend *ss,
 	fprintf(s->of,"%f %f %f %f hex\n",w,h,x,y);
 }
 
+/* Helper to escape characters in PostScript string literals */
+static void ps_escape_str(char *dst, int maxdst, const char *src) {
+	int di = 0;
+	if (dst == NULL || maxdst <= 0) return;
+	if (src == NULL) { dst[0] = '\0'; return; }
+	while (*src != '\0' && di < maxdst - 2) {
+		if (*src == '(' || *src == ')' || *src == '\\') {
+			if (di < maxdst - 3) {
+				dst[di++] = '\\';
+				dst[di++] = *src++;
+			} else {
+				break;
+			}
+		} else if (*src == '\r' || *src == '\n') {
+			dst[di++] = ' ';
+			src++;
+		} else {
+			dst[di++] = *src++;
+		}
+	}
+	dst[di] = '\0';
+}
+
 /* A centered string */
 static void ps_string(trend *ss,
 	double x, double y,		/* Bot Left Corner of rectangle in mm from origin */
@@ -470,15 +493,17 @@ static void ps_string(trend *ss,
 	char *str				/* String */
 ) {
 	ps_trend *s = (ps_trend *)ss; 
+	char esc_str[2048];
 
-	if (fabs(w) < 1e-6 || fabs(h) < 1e-6)
-		return;			/* Skip zero sized string */
+	if (fabs(w) < 1e-6 || fabs(h) < 1e-6 || str == NULL || str[0] == '\000')
+		return;			/* Skip zero sized or empty string */
+	ps_escape_str(esc_str, sizeof(esc_str), str);
 	x = mm2pnt(x);
 	y = mm2pnt(y);
 	w = mm2pnt(w);
 	h = mm2pnt(h);
 	fprintf(s->of,"%f scaleTimes\n",h * 0.75);
-	fprintf(s->of,"(%s) %f %f centerShow\n",str,x+w/2.0,y+h/2.0);
+	fprintf(s->of,"(%s) %f %f centerShow\n",esc_str,x+w/2.0,y+h/2.0);
 }
 
 /* A vertically centered string */
@@ -488,15 +513,17 @@ static void ps_vstring(trend *ss,
 	char *str				/* String */
 ) {
 	ps_trend *s = (ps_trend *)ss; 
+	char esc_str[2048];
 
-	if (fabs(w) < 1e-6 || fabs(h) < 1e-6)
-		return;			/* Skip zero sized string */
+	if (fabs(w) < 1e-6 || fabs(h) < 1e-6 || str == NULL || str[0] == '\000')
+		return;			/* Skip zero sized or empty string */
+	ps_escape_str(esc_str, sizeof(esc_str), str);
 	x = mm2pnt(x);
 	y = mm2pnt(y);
 	w = mm2pnt(w);
 	h = mm2pnt(h);
 	fprintf(s->of,"%f scaleTimes\n",w * 0.75);
-	fprintf(s->of,"(%s) %f %f vcenterShow\n",str,x-w/2.0,y+h/2.0);
+	fprintf(s->of,"(%s) %f %f vcenterShow\n",esc_str,x-w/2.0,y+h/2.0);
 }
 
 /* A dotted line */
@@ -872,6 +899,8 @@ static void tiff_string(trend *ss,
 	tiff_trend *s = (tiff_trend *)ss; 
 	double sw = 0.0, sh = 0.0;
 
+	if (fabs(w) < 1e-6 || fabs(h) < 1e-6 || str == NULL || str[0] == '\000')
+		return;			/* Skip zero sized or empty string */
 	sh = h * 0.57;
 	meas_string2d(s->r,&sw,NULL,timesr_b,str,sh,0);
 	/* Center the string within the recangle */
@@ -889,6 +918,8 @@ static void tiff_vstring(trend *ss,
 	tiff_trend *s = (tiff_trend *)ss; 
 	double sw = 0.0, sh = 0.0;
 
+	if (fabs(w) < 1e-6 || fabs(h) < 1e-6 || str == NULL || str[0] == '\000')
+		return;			/* Skip zero sized or empty string */
 	x -= w;		/* Make it bot left corner */
 	sw = w * 0.57;
 	meas_string2d(s->r,NULL, &sh,timesr_b,str,sw,3);
@@ -2265,6 +2296,9 @@ int *p_npat			/* Return number of patches including padding */
 	if (scanc & 2) 			/* Scan compatiblity */
 		sxwi = pwid/2.0;	/* First row patches extra width */
 
+	if (label == NULL || label[0] == '\000')
+		dopglabel = 0;		/* Omit per-page labelling */
+
 	/* Compute limits for this page size */
 	/* Figure the available space for patches */
 	mints = bord + txhisl + lcar;		/* Minimum top space due to border, text and clear area */
@@ -3009,6 +3043,7 @@ void usage(char *diag, ...) {
 	fprintf(stderr," -C               Don't use TIFF compression\n");
 	fprintf(stderr," -N               Use TIFF alpha N channels more than 4\n");
 	fprintf(stderr," -D               Dither 8 bit TIFF values down from 16 bit\n");
+	fprintf(stderr," -d label         Custom chart description/label string, or \"\" to omit labelling\n");
 	fprintf(stderr," -Q nbits         Quantize test values to fit in nbits\n");
 	fprintf(stderr," -R rsnum         Use given random start number\n");
 	fprintf(stderr," -K file.cal      Apply printer calibration to patch values and include in .ti2\n");
@@ -3070,7 +3105,9 @@ int main(int argc, char *argv[]) {
 	int nchan = 0;			/* Number of device chanels */
 	int i;
 	int si, fi, wi;			/* Sample id index, field index, keyWord index */
-	char label[400];		/* Space for chart label */
+	char *custom_label = NULL;	/* Custom chart label string */
+	int custom_label_set = 0;	/* Flag, custom label was specified */
+	char label[1024];		/* Space for chart label */
 	double marg = DEF_MARGINE;	/* Margin from paper edge in mm */
 	int nosubmarg = 0;		/* Don't subtract it from raster */
 	int nolpcbord = 0;		/* NZ to suppress left paper clip border */
@@ -3302,6 +3339,13 @@ int main(int argc, char *argv[]) {
 			else if (argv[fa][1] == 'D') {
 				tiffdith = 1;
 			}
+			/* Custom chart label string */
+			else if (argv[fa][1] == 'd') {
+				fa = nfa;
+				if (na == NULL) usage("Expected argument to -d");
+				custom_label = na;
+				custom_label_set = 1;
+			}
 			/* Don't use TIFF compression */
 			else if (argv[fa][1] == 'C') {
 				tiffcomp = 0;
@@ -3789,8 +3833,18 @@ int main(int argc, char *argv[]) {
 		pcol = pcold;		/* Density spacer alues */
 
 	
-	sprintf(label, "ArgyllCMS - Chart \"%s\" (%s %d) %s",
-	               psname, rand ? "Random Start" : "Chart ID", rstart, atm);
+	if (custom_label_set) {
+		if (custom_label[0] != '\000') {
+			strncpy(label, custom_label, sizeof(label) - 1);
+			label[sizeof(label) - 1] = '\000';
+			ocg->add_kword(ocg, 0, "CHART_LABEL", custom_label, NULL);
+		} else {
+			label[0] = '\000';
+		}
+	} else {
+		sprintf(label, "ArgyllCMS - Chart \"%s\" (%s %d) %s",
+		               psname, rand ? "Random Start" : "Chart ID", rstart, atm);
+	}
 	generate_file(itype, itype_mod, psname, cols, npat, applycal ? cal : NULL, label,
 	            pap != NULL ? pap->w : cwidth, pap != NULL ? pap->h : cheight,
 	            marg, nosubmarg, nollimit, nolpcbord, rand, rstart, saix, paix,	ixord,