From 1debf766f8ab6bda5a984597288c38f903d9f8ec Mon Sep 17 00:00:00 2001
From: fhgffy <102001626+fhgffy@users.noreply.github.com>
Date: Tue, 6 Oct 2026 04:23:59 +0800
Subject: [PATCH] cmake: propagate public header directory to target consumers

---
 CMakeLists.txt            | 1 +
 tests/CMakeLists.txt      | 3 +++
 tests/Makefile.am         | 2 +-
 tests/test_cmake_target.c | 9 +++++++++
 4 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 tests/test_cmake_target.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 773e0374..5ddf054f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -116,6 +116,7 @@ if(BUILD_SHARED_LIBS)
 else()
     add_library(qrencode ${QRENCODE_SRCS} ${QRENCODE_HDRS})
 endif()
+target_include_directories(qrencode INTERFACE "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
 if(CMAKE_USE_PTHREADS_INIT)
     target_link_libraries(qrencode Threads::Threads)
 endif()
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 4c4a5e81..71951e1d 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -79,3 +79,6 @@ if(TARGET ICONV::ICONV)
     endif()
 endif()
 
+add_executable(test_cmake_target test_cmake_target.c)
+target_link_libraries(test_cmake_target qrencode)
+add_test(test_cmake_target test_cmake_target)
diff --git a/tests/Makefile.am b/tests/Makefile.am
index c7cfad1b..2f4fcf4b 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -23,7 +23,7 @@ noinst_PROGRAMS += pthread_qrencode
 endif
 
 TESTS = $(check_PROGRAMS)
-EXTRA_DIST = test_all.sh test_basic.sh test_configure.sh frame URI_testset.inc CMakeLists.txt
+EXTRA_DIST = test_all.sh test_basic.sh test_configure.sh frame URI_testset.inc CMakeLists.txt test_cmake_target.c
 
 libdecoder_a_SOURCES = decoder.c decoder.h datachunk.c datachunk.h rsecc_decoder.c rsecc_decoder.h
 
diff --git a/tests/test_cmake_target.c b/tests/test_cmake_target.c
new file mode 100644
index 00000000..45aba11b
--- /dev/null
+++ b/tests/test_cmake_target.c
@@ -0,0 +1,9 @@
+#include <qrencode.h>
+
+int main(void)
+{
+	QRcode *code = QRcode_encodeString("CMake target", 0, QR_ECLEVEL_L, QR_MODE_8, 1);
+	if(code == 0) return 1;
+	QRcode_free(code);
+	return 0;
+}