[gsl] install pkgconfig file (#24285)

ports/gsl/CMakeLists.txt

@@ -75,6 +75,9 @@ if(INSTALL_HEADERS)
     set(TARGET_INSTALL_OPTIONS PUBLIC_HEADER DESTINATION include/gsl)
 endif()
 
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/gsl.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/gsl.pc" @ONLY)
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/gsl.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+
 install(TARGETS gsl gslcblas
     RUNTIME DESTINATION bin
     LIBRARY DESTINATION lib

ports/gsl/portfile.cmake

@@ -24,6 +24,8 @@ vcpkg_cmake_configure(
 vcpkg_cmake_install()
 vcpkg_copy_pdbs()
 
+vcpkg_fixup_pkgconfig()
+
 file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/usage" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
 file(INSTALL "${SOURCE_PATH}/COPYING" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}" RENAME copyright)
 configure_file("${CMAKE_CURRENT_LIST_DIR}/vcpkg-cmake-wrapper.cmake" "${CURRENT_PACKAGES_DIR}/share/${PORT}/vcpkg-cmake-wrapper.cmake" @ONLY)

ports/gsl/vcpkg.json

@@ -1,8 +1,10 @@
 {
   "name": "gsl",
   "version": "2.7.1",
+  "port-version": 1,
   "description": "The GNU Scientific Library is a numerical library for C and C++ programmers",
   "homepage": "https://www.gnu.org/software/gsl/",
+  "license": "GPL-3.0",
   "dependencies": [
     {
       "name": "vcpkg-cmake",

versions/baseline.json

@@ -2650,7 +2650,7 @@
     },
     "gsl": {
       "baseline": "2.7.1",
-      "port-version": 0
+      "port-version": 1
     },
     "gsl-lite": {
       "baseline": "0.40.0",

versions/g-/gsl.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "0bf0e1015fe68141e3c5d0b6777c2d38c352b72d",
+      "version": "2.7.1",
+      "port-version": 1
+    },
     {
       "git-tree": "dc3b20f09d0d6131faaa2dc0448d60676af96672",
       "version": "2.7.1",