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Allow disabling libelf with --enable/--disable-libelf 

Signed-off-by: Ørjan Malde <red@foxi.me>
This commit is contained in:
Ørjan Malde 2021-09-10 20:32:51 +02:00 committed by Florian Festi
parent 50bf7c6336
commit 3237bf9b2e
1 changed files with 30 additions and 20 deletions
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50
configure.ac
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@ -248,14 +248,22 @@ AC_SEARCH_LIBS(dlopen, [dl])
#=================
# Check for libelf library. Prefer external, otherwise none.
WITH_LIBELF_LIB=
AC_CHECK_HEADER([libelf.h])
AC_CHECK_HEADERS([gelf.h], [
AC_CHECK_LIB(elf, gelf_getvernaux, [
AC_DEFINE(HAVE_LIBELF, 1, [Define to 1 if you have the 'elf' library (-lelf).])
WITH_LIBELF_LIB="-lelf"
WITH_LIBELF=yes
])
AC_ARG_ENABLE([libelf],
[AS_HELP_STRING([--enable-libelf=@<:@yes/no/auto@:>@],
[build with libelf support (default=yes)])],
[enable_libelf="$enableval"],
[enable_libelf=yes])
AS_IF([test "x$enable_libelf" != "xno"], [
WITH_LIBELF_LIB=
AC_CHECK_HEADER([libelf.h])
AC_CHECK_HEADERS([gelf.h], [
AC_CHECK_LIB(elf, gelf_getvernaux, [
AC_DEFINE(HAVE_LIBELF, 1, [Define to 1 if you have the 'elf' library (-lelf).])
WITH_LIBELF_LIB="-lelf"
WITH_LIBELF=yes
])
])
])
AC_SUBST(WITH_LIBELF_LIB)
AM_CONDITIONAL(LIBELF,[test "$WITH_LIBELF" = yes])
@ -439,18 +447,20 @@ AM_CONDITIONAL(WITH_ARCHIVE,[test "$with_archive" = yes])
#=================
# Check for elfutils libdw library with dwelf_elf_gnu_build_id.
WITH_LIBDW_LIB=
AS_IF([test "$WITH_LIBELF" = yes],[
AC_CHECK_HEADERS([elfutils/libdwelf.h],[
# dwelf_elf_gnu_build_id was introduced in elfutils 0.159
AC_CHECK_LIB(dw, dwelf_elf_gnu_build_id, [
AC_DEFINE(HAVE_LIBDW, 1,
[Define to 1 if you have elfutils libdw library])
WITH_LIBDW_LIB="-ldw"
WITH_LIBDW=yes
# whether libdw supports compressed ELF objects
AC_CHECK_LIB(dw, dwelf_elf_begin, [
AC_DEFINE(HAVE_DWELF_ELF_BEGIN, 1, [Have dwelf_elf_begin?])
AS_IF([test "x$enable_libelf" != "xno"], [
WITH_LIBDW_LIB=
AS_IF([test "$WITH_LIBELF" = yes],[
AC_CHECK_HEADERS([elfutils/libdwelf.h],[
# dwelf_elf_gnu_build_id was introduced in elfutils 0.159
AC_CHECK_LIB(dw, dwelf_elf_gnu_build_id, [
AC_DEFINE(HAVE_LIBDW, 1,
[Define to 1 if you have elfutils libdw library])
WITH_LIBDW_LIB="-ldw"
WITH_LIBDW=yes
# whether libdw supports compressed ELF objects
AC_CHECK_LIB(dw, dwelf_elf_begin, [
AC_DEFINE(HAVE_DWELF_ELF_BEGIN, 1, [Have dwelf_elf_begin?])
])
])
])
])