From a5c62c6e7c998b3117d1914757716745ac316464 Mon Sep 17 00:00:00 2001
From: mccakit <mccakit09@gmail.com>
Date: Tue, 10 Mar 2026 02:29:16 +0300
Subject: [PATCH] pkgconf install

---
 CMakeLists.txt                                      | 13 +++++++++++--
 include/graaflib/algorithm/shortest_path/a_star.tpp |  7 ++++---
 packaging/graaf.pc.in                               |  8 ++++++++
 3 files changed, 23 insertions(+), 5 deletions(-)
 create mode 100644 packaging/graaf.pc.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c39daed7..16fa16bd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,5 +37,14 @@ endif()
 #Adding Interface to enable use of FetchContent
 add_library(${GRAAF_LIB_TARGET_NAME} INTERFACE)
 add_library(${PROJECT_NAME}::${GRAAF_LIB_TARGET_NAME} ALIAS ${PROJECT_NAME})
-
-target_include_directories(${GRAAF_LIB_TARGET_NAME} INTERFACE "${PROJECT_BINARY_DIR}" "${PROJECT_SOURCE_DIR}/include/")
\ No newline at end of file
+target_include_directories(${GRAAF_LIB_TARGET_NAME} INTERFACE "${PROJECT_BINARY_DIR}" "${PROJECT_SOURCE_DIR}/include/")
+include(GNUInstallDirs)
+install(
+    DIRECTORY "${PROJECT_SOURCE_DIR}/include/"
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
+configure_file(${CMAKE_SOURCE_DIR}/packaging/graaf.pc.in graaf.pc @ONLY)
+install(
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/graaf.pc
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
+)
diff --git a/include/graaflib/algorithm/shortest_path/a_star.tpp b/include/graaflib/algorithm/shortest_path/a_star.tpp
index 3f8fc8e3..c39e6524 100644
--- a/include/graaflib/algorithm/shortest_path/a_star.tpp
+++ b/include/graaflib/algorithm/shortest_path/a_star.tpp
@@ -60,9 +60,10 @@ std::optional<graph_path<WEIGHT_T>> a_star_search(
 
       // A* search does not work on negative edge weights.
       if (edge_weight < 0) {
-        throw std::invalid_argument{fmt::format(
-            "Negative edge weight [{}] between vertices [{}] -> [{}].",
-            edge_weight, current.id, neighbor)};
+        throw std::invalid_argument{
+            "Negative edge weight [" + std::to_string(edge_weight) +
+            "] between vertices [" + std::to_string(current.id) + "] -> [" +
+            std::to_string(neighbor) + "]."};
       }
 
       // tentative_g_score is the distance from start to the neighbor through
diff --git a/packaging/graaf.pc.in b/packaging/graaf.pc.in
new file mode 100644
index 00000000..061b4917
--- /dev/null
+++ b/packaging/graaf.pc.in
@@ -0,0 +1,8 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+libdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: graaf
+Version: @PROJECT_VERSION@
+Description: @PROJECT_DESCRIPTION@
+Cflags: -I${includedir}