From 4e89137689087afc45ff2505b289d1cf4be389ef Mon Sep 17 00:00:00 2001
From: Michael R Sweet <msweet@msweet.org>
Date: Tue, 11 Feb 2025 20:22:36 -0500
Subject: [PATCH] Use pkg-config for compiler options.

Fix some issues with the image2pdf example code.
---
 examples/Makefile    |  4 ++--
 examples/image2pdf.c | 13 +++++++++++--
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/examples/Makefile b/examples/Makefile
index 72f299b..7b20129 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -14,8 +14,8 @@
 # Common options
 CFLAGS		=	-g $(CPPFLAGS)
 #CFLAGS		=	-g -fsanitize=address $(CPPFLAGS)
-CPPFLAGS	=	-I.. -I/usr/local/include
-LIBS		=	-L.. -L/usr/local/lib -lpdfio -lz -lm
+CPPFLAGS	=	-I.. $(shell PKG_CONFIG_PATH="..:$(PKG_CONFIG_PATH)" pkg-config pdfio --cflags)
+LIBS		=	-L.. $(shell PKG_CONFIG_PATH="..:$(PKG_CONFIG_PATH)" pkg-config pdfio --libs)
 
 
 # Targets
diff --git a/examples/image2pdf.c b/examples/image2pdf.c
index 7697e91..bf81b95 100644
--- a/examples/image2pdf.c
+++ b/examples/image2pdf.c
@@ -1,7 +1,7 @@
 //
 // Image example for PDFio.
 //
-// Copyright © 2023-2024 by Michael R Sweet.
+// Copyright © 2023-2025 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@@ -22,8 +22,8 @@
 
 bool					// O - True on success, false on failure
 create_pdf_image_file(
-    const char *pdfname,		// I - PDF filename
     const char *imagename,		// I - Image filename
+    const char *pdfname,		// I - PDF filename
     const char *caption)		// I - Caption filename
 {
   pdfio_file_t   *pdf;			// PDF file
@@ -36,6 +36,15 @@ create_pdf_image_file(
   double         tx, ty;		// Position on page
 
 
+  // Default the caption...
+  if (!caption)
+  {
+    if ((caption = strrchr(imagename, '/')) != NULL)
+      caption ++;
+    else
+      caption = imagename;
+  }
+
   // Create the PDF file...
   pdf = pdfioFileCreate(pdfname, /*version*/NULL, /*media_box*/NULL,
                         /*crop_box*/NULL, /*error_cb*/NULL,