Setup as project with CMake/Meson/Make build support

* Move all sources to top level directory.
* Default install prefix is the top level directory

Author: dalcinl

.gitignore

@@ -1,3 +1,10 @@
+/build/
+/install/
+/bin/
+/include/
+/lib/
+/lib64/
+
 # Prerequisites
 *.d
 

CMakeLists.txt

@@ -0,0 +1,37 @@
+cmake_minimum_required(VERSION 3.5.0)
+project(mpi-stubs VERSION 4.2 LANGUAGES C)
+
+option(BUILD_SHARED_LIBS "Build libraries as SHARED" TRUE)
+
+add_library(mpi_abi mpistubs.c)
+set_target_properties(mpi_abi PROPERTIES VERSION 0)
+
+include(GNUInstallDirs)
+install(FILES mpi.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+install(TARGETS mpi_abi DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
+set(permissions
+  OWNER_READ OWNER_WRITE OWNER_EXECUTE
+  GROUP_READ GROUP_EXECUTE
+  WORLD_READ WORLD_EXECUTE
+)
+set(CC CC)
+set(cc cc)
+set(op cc)
+configure_file(mpicc.in mpicc @ONLY)
+install(
+  FILES ${CMAKE_BINARY_DIR}/mpicc
+  PERMISSIONS ${permissions}
+  DESTINATION ${CMAKE_INSTALL_BINDIR}
+)
+set(CC CXX)
+set(cc c++)
+set(op cxx)
+configure_file(mpicc.in mpicxx @ONLY)
+install(
+  FILES ${CMAKE_BINARY_DIR}/mpicxx
+  PERMISSIONS ${permissions}
+  DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

Makefile

@@ -1,4 +1,96 @@
-all:
-	$(MAKE) -C lib $@
+# -*- mode: makefile-gmake -*-
+.PHONY: default
+default: install
+
+SCRIPTS  = mpicc mpicxx
+SOURCE_H = mpi.h
+SOURCE_C = mpistubs.c
+LIBNAME  = mpi_abi
+VERSION  = 0
+
+PREFIX = .
+BINDIR = bin
+INCDIR = include
+LIBDIR = lib
+
+BUILD = build
+
+LN = ln -f
+LN_S = $(LN) -s
+MKDIR = mkdir -p
+RANLIB = ranlib
+
+UNAME_S := $(shell uname -s)
+ifeq ($(UNAME_S),Linux)
+  SED_I = sed -i
+  LIBFILE = lib$(LIBNAME).so.$(VERSION)
+  soname = -Wl,-soname,$1
+endif
+ifeq ($(UNAME_S),Darwin)
+  SED_I = sed -i''
+  LIBFILE = lib$(LIBNAME).$(VERSION).dylib
+  soname = -Wl,-install_name,@rpath/$1
+endif
+LIBLINK = $(subst .$(VERSION),,$(LIBFILE))
+
+ifndef CFLAGS
+CFLAGS = -Wall -Wextra -pedantic -Wno-unused-parameter
+endif
+
+.SECONDEXPANSION: # to expand $$(@D)/.DIR
+
+$(BUILD)/mpicc:  CC := CC
+$(BUILD)/mpicc:  cc := cc
+$(BUILD)/mpicc:  op := cc
+$(BUILD)/mpicxx: CC := CXX
+$(BUILD)/mpicxx: cc := c++
+$(BUILD)/mpicxx: op := cxx
+$(BUILD)/mpic%: mpicc.in | $$(@D)/.DIR
+	cp $< $@
+	$(SED_I) -e 's:@includedir@:$(abspath $(PREFIX))/$(INCDIR):' $@
+	$(SED_I) -e 's:@libdir@:$(abspath $(PREFIX))/$(LIBDIR):' $@
+	$(SED_I) -e 's/@CC@/$(CC)/g' $@
+	$(SED_I) -e 's/@cc@/$(cc)/g' $@
+	$(SED_I) -e 's/@op@/$(op)/g' $@
+
+$(BUILD)/$(LIBFILE): $(SOURCE_C) $(SOURCE_H) | $$(@D)/.DIR
+	$(LINK.c) -shared $(call soname,$(notdir $@)) -o $@ $<
+
+%/.DIR :
+	$(MKDIR) $(@D)
+	touch $@
+
+$(DESTDIR)$(PREFIX)/%/.:
+	$(MKDIR) $@
+
+.PHONY: build
+build: $(foreach f,$(SCRIPTS),$(BUILD)/$(f))
+build: $(BUILD)/$(LIBFILE)
+
+DESTBINDIR = $(DESTDIR)$(PREFIX)/$(BINDIR)
+DESTINCDIR = $(DESTDIR)$(PREFIX)/$(INCDIR)
+DESTLIBDIR = $(DESTDIR)$(PREFIX)/$(LIBDIR)
+
+.PHONY: install install-scripts install-headers install-library
+install: install-scripts install-headers install-library
+install-scripts: $(foreach f,$(SCRIPTS),$(BUILD)/$(f)) | $(DESTBINDIR)/.
+	install -c -m 755 $^ $(DESTBINDIR)
+install-headers: $(SOURCE_H) | $(DESTINCDIR)/.
+	install -c -m 644 $^ $(DESTINCDIR)
+install-library: $(BUILD)/$(LIBFILE) | $(DESTLIBDIR)/.
+	install -c $^ $(DESTLIBDIR)
+	cd $(DESTLIBDIR) && $(LN_S) $(LIBFILE) $(LIBLINK)
+
+.PHONY: uninstall uninstall-scripts uninstall-headers uninstall-library
+uninstall: uninstall-scripts uninstall-headers uninstall-library
+uninstall-scripts:
+	-$(RM) -r $(foreach f,$(SCRIPTS),$(DESTBINDIR)/$(f))
+uninstall-headers:
+	-$(RM) -r $(foreach f,$(SOURCE_H),$(DESTINCDIR)/$(f))
+uninstall-library:
+	-$(RM) $(DESTLIBDIR)/$(LIBFILE)
+	-$(RM) $(DESTLIBDIR)/$(LIBLINK)
+
+.PHONY: clean
 clean:
-	$(MAKE) -C lib $@
+	-$(RM) -r build install bin include lib lib64

build-cmake.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -eu
+cmake -B build -DCMAKE_INSTALL_PREFIX="${PREFIX:-$PWD}"
+cmake --build build
+cmake --install build
+(test -d lib64 && ln -f -s lib64 lib) || true

build-meson.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -eu
+meson setup build --prefix="${PREFIX:-$PWD}"
+meson compile -C build
+meson install -C build
+(test -d lib64 && ln -f -s lib64 lib) || true

clean.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+rm -fr build install bin include lib lib64

lib/Makefile

@@ -0,0 +1,54 @@
+project(
+  'mpi-stubs',
+  'c',
+  version: '4.2',
+  license: 'MIT',
+  meson_version: '>=1.0.0',
+)
+
+fs = import('fs')
+prefix = get_option('prefix')
+bindir = get_option('bindir')
+includedir = get_option('includedir')
+libdir = get_option('libdir')
+prog_dirs = {
+  'includedir':
+    fs.is_absolute(includedir) ?
+    includedir : prefix / includedir,
+  'libdir':
+    fs.is_absolute(libdir) ?
+    libdir : prefix / libdir,
+}
+prog_vars = {
+  'mpicc': {
+    'CC': 'CC',
+    'cc': 'cc',
+    'op': 'cc',
+  },
+  'mpicxx': {
+    'CC': 'CXX',
+    'cc': 'c++',
+    'op': 'cxx',
+  },
+}
+foreach prog: ['mpicc', 'mpicxx']
+  configure_file(
+    input: 'mpicc.in',
+    configuration: prog_dirs + prog_vars[prog],
+    output: prog,
+    install: true,
+    install_dir: bindir,
+    install_mode: 'rwxr-xr-x',
+  )
+endforeach
+
+install_headers(
+  'mpi.h'
+)
+
+library(
+  'mpi_abi',
+  'mpistubs.c',
+  version: '0',
+  install : true,
+)

meson.build

@@ -0,0 +1,81 @@
+#!/bin/bash
+
+# install-dirs
+includedir="@includedir@"
+libdir="@libdir@"
+
+@CC@=@cc@
+if [[ -n "$MPI_@CC@" ]]; then
+    # shellcheck disable=SC2034
+    MPI_@CC@_OLD="$@CC@"
+    @CC@="$MPI_@CC@"
+fi
+
+Exec="exec"
+mode="link"
+arglist=("$@")
+argindex=0
+for arg in "$@" ; do
+    addarg=no
+    case "$arg" in
+        -c|-S|-E|-M|-MM)
+            mode="compile"
+            addarg=yes
+            ;;
+        -@op@=*)
+            @CC@="${arg#*=}"
+            ;;
+        -show|-showme)
+            Exec="echo"
+            ;;
+        -show-compile-info|-showme:compile)
+            mode="show-compile"
+            ;;
+        -show-link-info|-showme:link)
+            mode="show-link"
+            ;;
+        -show-incdir|-showme:incdir)
+            mode="show-incdir"
+            ;;
+        -show-libdir|-showme:libdir)
+            mode="show-libdir"
+            ;;
+        -show-libs|-showme:libs)
+            mode="show-libs"
+            ;;
+        *)
+            addarg=yes
+            ;;
+    esac
+    if [[ "$addarg" = "no" ]]; then
+        unset 'arglist[$argindex]'
+    fi
+    argindex=$((argindex + 1))
+    unset addarg
+done
+unset argindex
+
+if [[ $# -eq 0 ]]; then
+    printf "%s: command line argument is required\n" "$0"
+    "$@CC@" --help
+    exit 1
+fi
+if [[ "@${arglist[*]}" = "@-v" ]]; then
+    mode=""
+fi
+
+if [[ "$mode" = "compile" ]]; then
+    $Exec "${@CC@}" "${arglist[@]}" -I"${includedir}"
+elif [[ "$mode" = "link" ]]; then
+    $Exec "${@CC@}" "${arglist[@]}" -I"${includedir}" -L"${libdir}" -lmpi_abi
+elif [[ "$mode" = "" ]]; then
+    $Exec "${@CC@}" "${arglist[@]}"
+else
+    case "$mode" in
+        show-compile) printf -- "-I%s\n" "${includedir}";;
+        show-link)    printf -- "-L%s -l%s\n" "${libdir}" mpi_abi;;
+        show-incdir)  printf -- "%s\n" "${includedir}";;
+        show-libdir)  printf -- "%s\n" "${libdir}";;
+        show-libs)    printf -- "%s\n" mpi_abi;;
+    esac
+fi