From 9d61ff4bba3f04f0cbb1b29e7e86a28ee1ed6da3 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Fri, 4 Apr 2025 00:45:19 -0400
Subject: [PATCH] add support for compiling fully static LAMMPS executable with
 libcurl

---
 cmake/Modules/Packages/EXTRA-COMMAND.cmake | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/cmake/Modules/Packages/EXTRA-COMMAND.cmake b/cmake/Modules/Packages/EXTRA-COMMAND.cmake
index 30d6156609..9e219d494a 100644
--- a/cmake/Modules/Packages/EXTRA-COMMAND.cmake
+++ b/cmake/Modules/Packages/EXTRA-COMMAND.cmake
@@ -3,8 +3,16 @@
 find_package(CURL QUIET)
 option(WITH_CURL "Enable libcurl support" ${CURL_FOUND})
 if(WITH_CURL)
-  find_package(CURL REQUIRED)
   target_compile_definitions(lammps PRIVATE -DLAMMPS_CURL)
-  target_link_libraries(lammps PRIVATE CURL::libcurl)
+
+  # need to use pkgconfig for fully static bins to find custom static libs
+  if (CMAKE_SYSTEM_NAME STREQUAL "LinuxMUSL")
+    include(FindPkgConfig)
+    pkg_check_modules(CURL IMPORTED_TARGET libcurl libssl libcrypto)
+    target_link_libraries(lammps PUBLIC PkgConfig::CURL)
+  else()
+    find_package(CURL REQUIRED)
+    target_link_libraries(lammps PRIVATE CURL::libcurl)
+  endif()
 endif()