add PIC option + vxsdk support

CMakeLists.txt

@@ -20,16 +20,7 @@ if(FXLIBC_TARGET STREQUAL vhex-sh)
   list(APPEND TARGET_FOLDERS vhex-generic sh-generic)
   set(FXLIBC_ARCH sh)
   add_definitions(-D__SUPPORT_VHEX_KERNEL)
-  # set(FXLIBC_SHARED ON)
-endif()
-
-if(FXLIBC_TARGET STREQUAL vhex-x86)
-  list(APPEND TARGET_FOLDERS vhex-generic x86-generic)
-  set(FXLIBC_ARCH x86)
-  add_definitions(-D__SUPPORT_VHEX_KERNEL)
-  # set(FXLIBC_SHARED ON)
-  # TODO: Maybe add -nostdinc (but that removes compiler-provided headers like
-  # <stddef.h>), or use another compiler than the system one?
+  set(CMAKE_INSTALL_PREFIX "${FXSDK_COMPILER_INSTALL}" CACHE PATH "..." FORCE)
 endif()
 
 if(FXLIBC_TARGET STREQUAL casiowin-fx)
@@ -74,6 +65,10 @@ endif()
 # libc.{a,so} libfxlibc.{a,so}
 
 add_compile_options(-Wall -Wextra -std=c11 -ffreestanding -Os)
+if(FXLIBC_PIC)
+  add_compile_options(-fpic)
+endif()
+
 if(FXLIBC_ARCH STREQUAL sh)
   add_compile_options(
     "$<$<COMPILE_LANGUAGE:C>:-m3;-mb>"

vxsdk.toml

@@ -0,0 +1,14 @@
+[package]
+name    = 'fxlibc'
+version = '1.3.0'
+type    = 'app'
+
+[build]
+configure = 'cmake -DFXLIBC_PIC=1 -DFXLIBC_TARGET=vhex-sh -B build-vhex -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-vhex.cmake'
+build     = 'make -C build-vhex'
+install   = 'make -C build-vhex install'
+uninstall = """ \
+    if [ -e build-vhex/install_manifest.txt ]; then \
+        xargs rm -f < build-vhex/install_manifest.txt; \
+    fi \
+"""