Merge pull request #76 from DaanDeMeyer/build-posix

Add BUILD_POSIX option

Author: kaniini

Makefile

@@ -34,9 +34,11 @@ else
 	CPPFLAGS += -D_XOPEN_SOURCE
 endif
 FREESTANDING := no
+BUILD_POSIX := yes
 
 ifeq ($(FREESTANDING),yes)
 	CPPFLAGS += -DFREESTANDING -Iarch/${ARCH}/include
+	BUILD_POSIX = no
 	EXPORT_UNPREFIXED = no
 else
 	CPPFLAGS += -Iarch/common/include
@@ -104,7 +106,7 @@ LIBUCONTEXT_POSIX_OBJ = ${LIBUCONTEXT_POSIX_C_SRC:.c=.o}
 LIBUCONTEXT_POSIX_PATH = ${shared_libdir}/${LIBUCONTEXT_POSIX_SONAME}
 LIBUCONTEXT_POSIX_STATIC_PATH = ${static_libdir}/${LIBUCONTEXT_POSIX_STATIC_NAME}
 
-ifeq ($(FREESTANDING),yes)
+ifeq ($(BUILD_POSIX),no)
 	LIBUCONTEXT_POSIX_NAME =
 	LIBUCONTEXT_POSIX_STATIC_NAME =
 endif

README.md

@@ -62,6 +62,9 @@ There are a few options:
   systems, but you may wish to disable this when using `FREESTANDING` mode to avoid conflicts with
   the target's libc.  Default is `yes`.
 
+* `BUILD_POSIX`: If this is set to `yes`, the POSIX compatibility library libucontext_posix will be built.
+  Default is `yes`.
+
 * `DESTDIR`: If this variable is set, the installed files will be installed to the specified path instead
   of the system root.
 

meson.build

@@ -68,7 +68,7 @@ build_args = [
 
 freestanding = get_option('freestanding')
 export_unprefixed = get_option('export_unprefixed')
-build_posix = true
+build_posix = get_option('build_posix')
 
 if freestanding
   build_args += '-DFREESTANDING'

meson_options.txt

@@ -2,6 +2,8 @@ option('freestanding', type : 'boolean', value : false,
        description: 'Do not use system headers')
 option('export_unprefixed', type : 'boolean', value : true,
        description: 'Export POSIX 2004 ucontext names as alises')
+option('build_posix', type : 'boolean', value : true,
+       description: 'Build POSIX compatibility library')
 option('cpu', type : 'string', value : '',
        description: 'Target CPU architecture for cross compile')
 option('docs', type : 'boolean', value : false,