diff options
| author | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-08-26 16:45:35 +0000 |
|---|---|---|
| committer | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-08-26 16:45:35 +0000 |
| commit | da5141501bbaee1750bd85d88dd86d8b5acbb040 (patch) | |
| tree | 9a2fde65d5e68d945737adfbf3732993de3886b5 /configure.ac | |
| parent | cdffda3e50f00b25b011a6d8e16b5eddee0b6d23 (diff) | |
more optimizations for embedded systems:
when LOADABLE_MODULES is off, don't export symbols from the main binary
when LOADABLE_MODULES is off, and the compiler/linker support it, strip out code not used in the final binary
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@41166 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac index 46e5ad734..a62d24380 100644 --- a/configure.ac +++ b/configure.ac @@ -251,6 +251,35 @@ AC_DEFINE([HAVE_GCC_ATOMICS], 1, [Define to 1 if your GCC C compiler provides at AC_MSG_RESULT(no) ) +AST_GCC_ATTRIBUTE(pure) +AST_GCC_ATTRIBUTE(malloc) +AST_GCC_ATTRIBUTE(const) +AST_GCC_ATTRIBUTE(unused) +AST_GCC_ATTRIBUTE(always_inline) + +AC_MSG_CHECKING(checking for -ffunction-sections support) +saved_CFLAGS="${CFLAGS}" +CFLAGS="${CFLAGS} -ffunction-sections" +AC_COMPILE_IFELSE( + AC_LANG_PROGRAM([], [int x = 1;]), + AC_MSG_RESULT(yes) + [saved_LDFLAGS="${LDFLAGS}"] + [LDFLAGS="${LDFLAGS} -Wl,--gc-sections"] + AC_MSG_CHECKING(checking for --gc-sections support) + AC_LINK_IFELSE( + AC_LANG_PROGRAM([], [int x = 1;]), + AC_MSG_RESULT(yes) + [GC_CFLAGS="-ffunction-sections"] + [[GC_LDFLAGS="-Wl,--gc-sections"]], + AC_MSG_RESULT(no) + ) + [LDFLAGS="${saved_LDFLAGS}"], + AC_MSG_RESULT(no) +) +CFLAGS="${saved_CFLAGS}" +AC_SUBST(GC_CFLAGS) +AC_SUBST(GC_LDFLAGS) + AC_MSG_CHECKING(checking for res_ninit) AC_LINK_IFELSE( AC_LANG_PROGRAM([#include <resolv.h>], @@ -269,12 +298,6 @@ AC_LINK_IFELSE( AC_MSG_RESULT(no) ) -AST_GCC_ATTRIBUTE(pure) -AST_GCC_ATTRIBUTE(malloc) -AST_GCC_ATTRIBUTE(const) -AST_GCC_ATTRIBUTE(unused) -AST_GCC_ATTRIBUTE(always_inline) - AC_CHECK_HEADER([libkern/OSAtomic.h], [AC_DEFINE_UNQUOTED([HAVE_OSX_ATOMICS], 1, [Define to 1 if OSX atomic operations are supported.])]) |