Hello,
I am trying to use Emacs as an IDE in my Linux kernel development
projects. So I installed CEDET and GNU Global (gtags) with no
problems.
When I open a C source code belonging to my Linux kernel source
folder, the linux project is detected automatically. Functions,
variables, headers and other keywords are highlighted correctly.
Through the ~/.emacs file I configured semantic's code completion and
intellisense. So when I press C-<SPC> the code completion menu appears
and I can choose what's needed.
The issue is when I use preprocessor defines, the intellisense system
shows the menu on the current location but doesn't detect the right
things when invoked (C-<SPC>). Even I close and restart emacs the same
behavior is reproduced.
The test code is:
//----------------------------------------------------------------------------------------
typedef struct
{
int p1;
#ifdef __KERNEL__
int p2;
#endif
#ifdef USE1
char p3;
#endif
#ifdef __LINUX_ARM_ARCH__
int p4;
#endif
}OBJ;
OBJ g_obj;
//----------------------------------------------------------------------------------------
__KERNEL__ , USE1 and __LINUX_ARM_ARCH__ are already defined as
follows:
__KERNEL__ : (add-to-list 'semantic-lex-c-preprocessor-symbol-map
'("__KERNEL__" . "")) in .emacs
USE1 : defined in a header file included by the current C source file.
__LINUX_ARM_ARCH__ : (add-to-list 'semantic-lex-c-preprocessor-symbol-
file "/home/abdellatif/kernel/include/generated/autoconf.h") in .emacs
In the .emacs file I also added all the needed includes and defines
required by GCC cross compiler (GCC for ARM) to build the kernel
project.
I also tried to force semantic to use GCC cross compiler command line
in place of the system GCC to preprocess correctly but haven't found
how to do that.
The .emacs file, the output of the "M-x semantic-c-describe-
environment" command and the software versions are shown below.
Any help or indication is welcomed :)
Best regards
############# Software versions #############
- Emacs (23.2.1)
- Ubuntu machine (natty, 11.04)
- Cedet 1.0 (from http://cedet.sourceforge.net/)
############# .emacs #############
;load CEDET
(load-file "~/Documents/my_emacs/cedet-1.0/common/cedet.el")
(require 'ede)
(global-ede-mode t)
; turn on which-func support (plus all other code helpers)
(semantic-load-enable-gaudy-code-helpers)
(semantic-load-enable-excessive-code-helpers)
; turn on all "useful" features
(setq semantic-load-turn-useful-things-on t)
(setq-mode-local c-mode
semanticdb-find-default-throttle
'(project unloaded system recursive))
;init names completion, and displaying of information for tags &
classes
(require 'semantic-ia)
;preprocessing of source code
(require 'semantic-c)
(semantic-reset-system-include 'c-mode)
(semantic-reset-system-include 'c++-mode)
(semantic-add-system-include "/home/abdellatif/toolchain/arm-
eabi-4.4.3/lib/gcc/arm-eabi/4.4.3/include" 'c-mode)
(semantic-add-system-include "/home/abdellatif/kernel/arch/arm/
include" 'c-mode)
(semantic-add-system-include "/home/abdellatif/kernel/include" 'c-
mode)
(semantic-add-system-include "/home/abdellatif/kernel/arch/arm/mach-
omap2/include" 'c-mode)
(semantic-add-system-include "/home/abdellatif/kernel/arch/arm/plat-
omap/include" 'c-mode)
(add-to-list 'semantic-lex-c-preprocessor-symbol-file "/home/
abdellatif/kernel/include/generated/autoconf.h")
(add-to-list 'semantic-lex-c-preprocessor-symbol-map '("__KERNEL__" .
""))
(add-to-list 'semantic-lex-c-preprocessor-symbol-map
'("__LINUX_ARM_ARCH__" . "7"))
(add-to-list 'semantic-lex-c-preprocessor-symbol-map
'("KBUILD_STR(s)" . "#s"))
(add-to-list 'semantic-lex-c-preprocessor-symbol-map
'("KBUILD_BASENAME" . "KBUILD_STR(main)"))
(add-to-list 'semantic-lex-c-preprocessor-symbol-map
'("KBUILD_MODNAME" . "KBUILD_STR(main)"))
;semantic integration with imenu (display of a menu with a list of
functions, variables, and other tags)
(defun my-semantic-hook ()
(imenu-add-to-menubar "TAGS"))
(add-hook 'semantic-init-hooks 'my-semantic-hook)
;names completion (semantic commands)
(defun my-cedet-hook ()
(local-set-key [(control return)] 'semantic-ia-complete-symbol)
(local-set-key "\C-x " 'semantic-ia-complete-symbol-menu)
(local-set-key "\C-x\r" 'gtags-find-tag-from-here))
(add-hook 'c-mode-common-hook 'my-cedet-hook)
;navigating in source code
(semantic-mru-bookmark-mode 1)
;tell semantic to store its tags database between sessions here
(require 'semanticdb)
(setq-default semanticdb-default-save-directory "~/.semantic.cache")
(setq-default semanticdb-default-system-save-directory
"~/.semantic.cache")
;allow Semanticdb use databases generated by global(gtags)
(require 'semanticdb-global)
(semanticdb-enable-gnu-global-databases 'c-mode)
############# semantic-c-describe-environment #############
Calculated GCC Parameters:
version = 4.5.2
--target = i686-linux-gnu
--host = i686-linux-gnu
--build = i686-linux-gnu
--enable-checking = release
--with-tune = generic
--with-arch-32 = i686
--disable-werror = nil
--enable-targets = all
--enable-objc-gc = nil
--with-plugin-ld = ld.gold
--enable-ld = default
--enable-gold = nil
--enable-plugin = nil
--enable-libstdcxx-time = yes
--enable-libstdcxx-debug = nil
--enable-clocale = gnu
--with-sysroot = /
--enable-nls = nil
--libdir = /usr/lib/i386-linux-gnu
--with-gxx-include-dir = /usr/include/c++/4.5
--enable-threads = posix
--without-included-gettext = nil
--libexecdir = /usr/lib/i386-linux-gnu
--with-system-zlib = nil
--enable-linker-build-id = nil
--with-multiarch-defaults = i386-linux-gnu
--enable-multiarch = nil
--enable-shared = nil
--program-suffix = -4.5
--prefix = /usr
--enable-languages = c,c++,fortran,objc,obj-c++
--with-bugurl = file:///usr/share/doc/gcc-4.5/README.Bugs
4.5.2-8ubuntu4' = nil
--with-pkgversion = 'Ubuntu/Linaro
-v = nil
target = i686-linux-gnu
Include Path Summary:
This file's system include path is:
/home/abdellatif/toolchain/arm-eabi-4.4.3/lib/gcc/arm-eabi/4.4.3/
include/
/home/abdellatif/kernel/arch/arm/include/
/home/abdellatif/kernel/include/
/home/abdellatif/kernel/arch/arm/mach-omap2/include/
/home/abdellatif/kernel/arch/arm/plat-omap/include/
Macro Summary:
Your CPP table is primed from these files:
/home/abdellatif/kernel/include/generated/autoconf.h
in table: #<semanticdb-table autoconf.h (652 tags)>
/usr/include/c++/4.5/i686-linux-gnu/bits/c++config.h
in table: #<semanticdb-table c++config.h (193 tags)>
Built-in symbol map:
__THROW =
__const = const
__restrict =
__declspec = ((spp-arg-list (foo) 1 . 2))
__attribute__ = ((spp-arg-list (foo) 1 . 2))
User symbol map:
KBUILD_MODNAME = KBUILD_STR(main)
KBUILD_BASENAME = KBUILD_STR(main)
KBUILD_STR(s) = #s
__LINUX_ARM_ARCH__ = 7
__KERNEL__ =
__DBL_MIN_EXP__ = (-1021)
__pentiumpro__ = 1
__UINT_LEAST16_MAX__ = 65535
__FLT_MIN__ = 1.17549435082228750797e-38F
__CHAR_BIT__ = 8
__UINT8_MAX__ = 255
__WINT_MAX__ = 4294967295U
__SIZE_MAX__ = 4294967295U
__WCHAR_MAX__ = 2147483647
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 = 1
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 = 1
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 = 1
__DBL_DENORM_MIN__ = ((double)4.94065645841246544177e-324L)
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 = 1
__FLT_EVAL_METHOD__ = 2
__unix__ = 1
__UINT_FAST64_MAX__ = 18446744073709551615ULL
__SIG_ATOMIC_TYPE__ = int
__DBL_MIN_10_EXP__ = (-307)
__FINITE_MATH_ONLY__ = 0
__GNUC_PATCHLEVEL__ = 2
__UINT_FAST8_MAX__ = 255
__DEC64_MAX_EXP__ = 385
__INT8_C(c) = c
__UINT_LEAST64_MAX__ = 18446744073709551615ULL
__SHRT_MAX__ = 32767
__LDBL_MAX__ = 1.18973149535723176502e+4932L
__UINT_LEAST8_MAX__ = 255
__linux = 1
__DEC32_EPSILON__ = 1E-6DF
__unix = 1
__UINT32_MAX__ = 4294967295U
__LDBL_MAX_EXP__ = 16384
__WINT_MIN__ = 0U
__linux__ = 1
__SCHAR_MAX__ = 127
__DBL_DIG__ = 15
_FORTIFY_SOURCE = 2
__SIZEOF_INT__ = 4
__SIZEOF_POINTER__ = 4
__STDC_HOSTED__ = 1
__LDBL_HAS_INFINITY__ = 1
__FLT_EPSILON__ = 1.19209289550781250000e-7F
__GXX_WEAK__ = 1
__LDBL_MIN__ = 3.36210314311209350626e-4932L
__DEC32_MAX__ = 9.999999E96DF
__INT32_MAX__ = 2147483647
__SIZEOF_LONG__ = 4
__UINT16_C(c) = c
__DECIMAL_DIG__ = 21
__gnu_linux__ = 1
__LDBL_HAS_QUIET_NAN__ = 1
__GNUC__ = 4
__GXX_RTTI = 1
__FLT_HAS_DENORM__ = 1
__SIZEOF_LONG_DOUBLE__ = 12
__BIGGEST_ALIGNMENT__ = 16
__i686 = 1
__DBL_MAX__ = ((double)1.79769313486231570815e+308L)
__INT_FAST32_MAX__ = 2147483647
__DBL_HAS_INFINITY__ = 1
__INT64_MAX__ = 9223372036854775807LL
__DEC32_MIN_EXP__ = (-94)
__INT_FAST16_TYPE__ = int
__LDBL_HAS_DENORM__ = 1
__cplusplus = 1
__DEC128_MAX__ = 9.999999999999999999999999999999999E6144DL
__INT_LEAST32_MAX__ = 2147483647
__DEC32_MIN__ = 1E-95DF
__DEPRECATED = 1
__DBL_MAX_EXP__ = 1024
__DEC128_EPSILON__ = 1E-33DL
__PTRDIFF_MAX__ = 2147483647
__GNUG__ = 4
__LONG_LONG_MAX__ = 9223372036854775807LL
__SIZEOF_SIZE_T__ = 4
__SIZEOF_WINT_T__ = 4
__GCC_HAVE_DWARF2_CFI_ASM = 1
__GXX_ABI_VERSION = 1002
__FLT_MIN_EXP__ = (-125)
__i686__ = 1
__DBL_MIN__ = ((double)2.22507385850720138309e-308L)
__FLT_MIN_10_EXP__ = (-37)
__DECIMAL_BID_FORMAT__ = 1
__DEC128_MIN__ = 1E-6143DL
__UINT16_MAX__ = 65535
__DBL_HAS_DENORM__ = 1
__NO_INLINE__ = 1
__i386 = 1
__FLT_MANT_DIG__ = 24
__VERSION__ = "4.5.2"
__INT32_C(c) = c
__DEC64_EPSILON__ = 1E-15DD
__DEC128_MIN_EXP__ = (-6142)
__INT_FAST32_TYPE__ = int
unix = 1
__INT16_MAX__ = 32767
__i386__ = 1
__UINT64_MAX__ = 18446744073709551615ULL
__ELF__ = 1
__FLT_RADIX__ = 2
__LDBL_EPSILON__ = 1.08420217248550443401e-19L
__SIG_ATOMIC_MAX__ = 2147483647
__SIZEOF_PTRDIFF_T__ = 4
__DEC32_SUBNORMAL_MIN__ = 0.000001E-95DF
__pentiumpro = 1
__INT_FAST16_MAX__ = 2147483647
__UINT_FAST32_MAX__ = 4294967295U
__FLT_HAS_QUIET_NAN__ = 1
__FLT_MAX_10_EXP__ = 38
__LONG_MAX__ = 2147483647L
__DEC128_SUBNORMAL_MIN__ =
0.000000000000000000000000000000001E-6143DL
__FLT_HAS_INFINITY__ = 1
__DEC64_MAX__ = 9.999999999999999E384DD
__PRAGMA_REDEFINE_EXTNAME = 1
__INT_LEAST16_MAX__ = 32767
__DEC64_MANT_DIG__ = 16
__UINT_LEAST32_MAX__ = 4294967295U
__DEC32_MAX_EXP__ = 97
__INT_FAST8_MAX__ = 127
__INTPTR_MAX__ = 2147483647
linux = 1
__EXCEPTIONS = 1
__LDBL_MANT_DIG__ = 64
__DBL_HAS_QUIET_NAN__ = 1
__INTPTR_TYPE__ = int
__WCHAR_TYPE__ = int
__SIZEOF_FLOAT__ = 4
__UINTPTR_MAX__ = 4294967295U
__DEC64_MIN_EXP__ = (-382)
__INT_FAST64_MAX__ = 9223372036854775807LL
__FLT_DIG__ = 6
__INT_MAX__ = 2147483647
__FLT_MAX_EXP__ = 128
__DBL_MANT_DIG__ = 53
__INT_LEAST64_MAX__ = 9223372036854775807LL
__DEC64_MIN__ = 1E-383DD
__SIZEOF_SHORT__ = 2
__LDBL_MIN_EXP__ = (-16381)
__INT_LEAST8_MAX__ = 127
__SSP__ = 1
__LDBL_MAX_10_EXP__ = 4932
__DBL_EPSILON__ = ((double)2.22044604925031308085e-16L)
__UINT8_C(c) = c
__INT_LEAST32_TYPE__ = int
__SIZEOF_WCHAR_T__ = 4
__DEC_EVAL_METHOD__ = 2
__INTMAX_MAX__ = 9223372036854775807LL
__FLT_DENORM_MIN__ = 1.40129846432481707092e-45F
__INT8_MAX__ = 127
__FLT_MAX__ = 3.40282346638528859812e+38F
__INT32_TYPE__ = int
__SIZEOF_DOUBLE__ = 8
i386 = 1
__DEC128_MAX_EXP__ = 6145
__GNUC_MINOR__ = 5
__UINTMAX_MAX__ = 18446744073709551615ULL
__DEC32_MANT_DIG__ = 7
__DBL_MAX_10_EXP__ = 308
__LDBL_DENORM_MIN__ = 3.64519953188247460253e-4951L
__INT16_C(c) = c
__STDC__ = 1
__PTRDIFF_TYPE__ = int
__DEC64_SUBNORMAL_MIN__ = 0.000000000000001E-383DD
__DEC128_MANT_DIG__ = 34
__LDBL_MIN_10_EXP__ = (-4931)
__SIZEOF_LONG_LONG__ = 8
__LDBL_DIG__ = 18
__UINT_FAST16_MAX__ = 4294967295U
__GNUC_GNU_INLINE__ = 1
_GNU_SOURCE = 1
--
Abdellatif El Khlifi
abdellatif@...
http://abdellatif.emurse.com/
|