Switch to CMake build system for lfortran runtime

CMakeLists.txt

@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+
+project(lfort C)
+
+if (NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Debug
+        CACHE STRING "Build type (Debug, Release)" FORCE)
+endif ()
+if (NOT (CMAKE_BUILD_TYPE STREQUAL "Debug" OR
+        CMAKE_BUILD_TYPE STREQUAL "Release"))
+    message("${CMAKE_BUILD_TYPE}")
+    message(FATAL_ERROR "CMAKE_BUILD_TYPE must be one of: Debug, Release (current value: '${CMAKE_BUILD_TYPE}')")
+endif ()
+
+enable_testing()
+
+message("\n")
+message("Configuration results")
+message("---------------------")
+message("C compiler      : ${CMAKE_C_COMPILER}")
+message("Build type: ${CMAKE_BUILD_TYPE}")
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+    message("C compiler flags      : ${CMAKE_C_FLAGS_DEBUG}")
+else ()
+    message("C compiler flags      : ${CMAKE_C_FLAGS_RELEASE}")
+endif ()
+message("Installation prefix: ${CMAKE_INSTALL_PREFIX}")
+
+
+set(SRC
+    lfort_intrinsics.c
+)
+add_library(lfortran ${SRC})
+install(TARGETS lfortran
+    RUNTIME DESTINATION bin
+    ARCHIVE DESTINATION share/lfortran/lib
+    LIBRARY DESTINATION share/lfortran/lib
+)

build1.sh

@@ -3,11 +3,7 @@
 set -e
 set -x
 
-# Compile LFort runtime library
-CFLAGS="-Wall -g -fPIC"
-gcc $CFLAGS -o lfort_intrinsics.o -c lfort_intrinsics.c
-ar rcs liblfortran.a lfort_intrinsics.o
-gcc -shared -o liblfortran.so lfort_intrinsics.o
-mkdir -p share/lfortran/lib
-mv liblfortran.a share/lfortran/lib/
-mv liblfortran.so share/lfortran/lib/
+cmake -DCMAKE_INSTALL_PREFIX=`pwd` -DBUILD_SHARED_LIBS=OFF .
+make install
+cmake -DCMAKE_INSTALL_PREFIX=`pwd` -DBUILD_SHARED_LIBS=ON .
+make install