feat: relocatable pkg-config files (minpack.pc)

Author: luau-project

CMakeLists.txt

@@ -107,6 +107,11 @@
 #         Description: Installation directory for pkg-config (.pc) files.     #
 #         Note: Must be a relative path to ${CMAKE_INSTALL_PREFIX}.           #
 #                                                                             #
+#     RELOCATABLE_PKGCONFIG (type: BOOL, default value: ON)                   #
+#         Description: Enable the generated pkg-config file (minpack.pc)      #
+#             to be relocatable.                                              #
+#         Note: Must be a relative path to ${CMAKE_INSTALL_PREFIX}.           #
+#                                                                             #
 ###############################################################################
 # End(Description of parameters)                                              #
 ###############################################################################
@@ -127,6 +132,7 @@ option(BUILD_SHARED_LIBS "Build the shared library." ON)
 option(BUILD_STATIC_LIBS "Build the static library." OFF)
 option(USE_DOWNLOAD "Download source code." ON)
 set(DOWNLOAD_DIR "${CMAKE_CURRENT_SOURCE_DIR}" CACHE PATH "Destination directory to store downloaded files.")
+option(RELOCATABLE_PKGCONFIG "Enable the generated pkg-config file (minpack.pc) to be relocatable." ON)
 
 # official minpack url
 set(minpack_url "https://www.netlib.org/minpack")
@@ -298,6 +304,24 @@ set(minpack_intel_specific_Fflags_for_Unix "-assume" "underscore" "-names" "lowe
 # hold targets to install
 set(targets_to_install "")
 
+if (RELOCATABLE_PKGCONFIG)
+
+    # eval number of parents directories
+    # between CMAKE_INSTALL_PREFIX and MINPACK_INSTALL_PKGCONFIGDIR
+    # to enable a relocatable pkg-config (.pc) file
+    set(__pcfiledir_suffix "")
+    set(__current_parent_dir "${CMAKE_INSTALL_PREFIX}/${MINPACK_INSTALL_PKGCONFIGDIR}")
+    while (NOT "${__current_parent_dir}" STREQUAL "${CMAKE_INSTALL_PREFIX}")
+        get_filename_component(__current_parent_dir ${__current_parent_dir} PATH)
+        list(APPEND __pcfiledir_suffix "..")
+    endwhile()
+    list(JOIN __pcfiledir_suffix "/" __pcfiledir_joint_suffix)
+    set(MINPACK_PKGCONFIG_PREFIX "\${pcfiledir}/${__pcfiledir_joint_suffix}")
+
+else()
+    set(MINPACK_PKGCONFIG_PREFIX "${CMAKE_INSTALL_PREFIX}")
+endif()
+
 # Build the shared library
 if (BUILD_SHARED_LIBS)
     add_library(minpack_SHARED SHARED "")
@@ -322,6 +346,7 @@ if (BUILD_SHARED_LIBS)
 
     set_target_properties(minpack_SHARED
         PROPERTIES
+        Fortran_FORMAT FIXED
         POSITION_INDEPENDENT_CODE ON
         OUTPUT_NAME ${minpack_library_name}
     )
@@ -354,6 +379,7 @@ if (BUILD_STATIC_LIBS)
 
     set_target_properties(minpack_STATIC
         PROPERTIES
+        Fortran_FORMAT FIXED
         OUTPUT_NAME ${minpack_library_name}
     )
 
@@ -410,6 +436,7 @@ message(STATUS "")
 message(STATUS "     Build type ...................... : ${CMAKE_BUILD_TYPE}")
 message(STATUS "     Build shared libs ............... : ${BUILD_SHARED_LIBS}")
 message(STATUS "     Build static libs ............... : ${BUILD_STATIC_LIBS}")
+message(STATUS "     Relocatable pkg-config files .... : ${RELOCATABLE_PKGCONFIG}")
 message(STATUS " ")
 message(STATUS "   Install directories:")
 message(STATUS " ")

README.md

@@ -9,10 +9,10 @@ Build scripts for minpack.
     * [What is minpack?](#what-is-minpack)
     * [Why minpack-builder is needed?](#why-minpack-builder-is-needed)
     * [How to solve the problem?](#how-to-solve-the-problem)
+* [Documentation](#documentation)
 * [Continuous Integration](#continuous-integration)
     * [Windows 11](#windows-11)
     * [Ubuntu 22.04](#ubuntu-2204)
-* [Documentation](#documentation)
 * [References](#references)
 
 ## Introduction
@@ -27,7 +27,7 @@ The primary goal of **minpack-builder** is to provide an unified C API and a sta
 
 ### What is minpack?
 
-The original minpack [[1]](https://www.netlib.org/minpack) is a battle-tested **min**imization **pack**age written in Fortran 77 for solving a system of nonlinear equations and nonlinear least squares problems, discussed in details at [[3]](https://doi.org/10.2172/6997568). Throughout the years, popular scientific libraries like SciPy [[4]](https://github.com/scipy/scipy/tree/main/scipy/optimize/minpack) and Eigen [[5]](https://eigen.tuxfamily.org/dox/unsupported/index.html) have been using minpack to perform nonlinear optimization, either in unmodified form or rewritten to programming languages other than Fortran.
+The original minpack [[1]](https://www.netlib.org/minpack) is a battle-tested **min**imization **pack**age written in Fortran 77 for solving a system of nonlinear equations and nonlinear least squares problems, discussed in details at [[3]](https://doi.org/10.2172/6997568). Throughout the years, popular scientific libraries like SciPy [[4]](https://github.com/scipy/scipy/tree/main/scipy/optimize/minpack) and Eigen [[5]](https://eigen.tuxfamily.org/dox/unsupported/index.html) have been using minpack to perform nonlinear optimization.
 
 > [!IMPORTANT]
 > 
@@ -45,9 +45,17 @@ While MSYS2 is an excellent choice for people working with GCC-like toolchains,
 
 In order to provide an unified C API for minpack, we use CMake [[2]](https://cmake.org/) as a build system to download the source code directly from the official minpack website [[1]](https://www.netlib.org/minpack). Then, we handle vendor-specific parameters of the Fortran compiler to build the library conforming to the API seen on Linux operating systems. Finally, we install it on a suitable location defined by the developer, making the minpack binaries easily discoverable as a CMake [[2]](https://cmake.org/) module or pkg-config [[15]](https://gitlab.freedesktop.org/pkg-config/pkg-config) module.
 
+## Documentation
+
+Browse the [documentation](doc/README.md).
+
 ## Continuous Integration
 
-At the moment, the continuous integration on github is able to build and install minpack in the following combination of platform / compiler toolchain.
+> [!TIP]
+> 
+> The heavy testing of the capabilities of ```minpack-builder``` to build minpack happens on our project [https://github.com/luau-project/minpackex](https://github.com/luau-project/minpackex), which extends minpack API to allow an easier usage from C/C++. You definitely should check it out!
+
+At the moment, the continuous integration on ```minpack-builder``` github is able to build and install minpack in the following combination of platform / compiler toolchain.
 
 > [!NOTE]
 > 
@@ -57,7 +65,7 @@ At the moment, the continuous integration on github is able to build and install
 
 | Fortran Compiler | Compiler Version | Build Status |
 |------------------|------------------|--------------|
-| GFortran | 13.2.0 | ![gfortran-win workflow](https://github.com/luau-project/minpack-builder/actions/workflows/gfortran-on-windows.yaml/badge.svg?branch=main) |
+| GFortran | 14.1.0 | ![gfortran-win workflow](https://github.com/luau-project/minpack-builder/actions/workflows/gfortran-on-windows.yaml/badge.svg?branch=main) |
 | Intel LLVM ifx (*MSVC-like*) | 2024.1.0 | ![ifx-win workflow](https://github.com/luau-project/minpack-builder/actions/workflows/intel-fortran-on-windows.yaml/badge.svg?branch=main) |
 | LLVM Flang-new (*GCC-like*) | 18.1.4 | ![llvm-flang-win workflow](https://github.com/luau-project/minpack-builder/actions/workflows/llvm-flang-gcc-like-on-windows.yaml/badge.svg?branch=main) |
 
@@ -69,10 +77,6 @@ At the moment, the continuous integration on github is able to build and install
 | Intel LLVM ifx (*GCC-like*) | 2024.1.0 | ![ifx-ubuntu workflow](https://github.com/luau-project/minpack-builder/actions/workflows/intel-fortran-on-ubuntu.yaml/badge.svg?branch=main) |
 | LLVM Flang-new (*GCC-like*) | 18.1.3 |![llvm-flang-ubuntu workflow](https://github.com/luau-project/minpack-builder/actions/workflows/llvm-flang-on-ubuntu.yaml/badge.svg?branch=main)|
 
-## Documentation
-
-Browse the [documentation](doc/README.md).
-
 ## References
 
 1. minpack. Accessed May 2, 2024. [https://www.netlib.org/minpack](https://www.netlib.org/minpack);

cmake/minpack.pc.in

@@ -1,5 +1,5 @@
-prefix=@CMAKE_INSTALL_PREFIX@
-exec_prefix=@CMAKE_INSTALL_PREFIX@
+prefix=@MINPACK_PKGCONFIG_PREFIX@
+exec_prefix=@MINPACK_PKGCONFIG_PREFIX@
 lib_name=@minpack_library_name@
 libdir=${exec_prefix}/@MINPACK_INSTALL_LIBDIR@
 includedir=${prefix}/@MINPACK_INSTALL_INCLUDEDIR@

doc/Configuration-Options.md

@@ -18,6 +18,7 @@
 * [MINPACK_INSTALL_INCLUDEDIR](#MINPACK_INSTALL_INCLUDEDIR)
 * [MINPACK_INSTALL_DOCDIR](#MINPACK_INSTALL_DOCDIR)
 * [MINPACK_INSTALL_PKGCONFIGDIR](#MINPACK_INSTALL_PKGCONFIGDIR)
+* [RELOCATABLE_PKGCONFIG](#RELOCATABLE_PKGCONFIG)
 
 ## CMAKE_BUILD_TYPE
 
@@ -107,5 +108,12 @@
 * Default value: ${MINPACK_INSTALL_LIBDIR}/pkgconfig
 * Note: This value must be a relative path to ${CMAKE_INSTALL_PREFIX}.
 
+## RELOCATABLE_PKGCONFIG
+
+* Parameter: RELOCATABLE_PKGCONFIG
+* Description: Enable the generated pkg-config file (minpack.pc) to be relocatable.
+* Type: BOOL
+* Default value: ON.
+
 ---
 [Documentation](README.md)