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Viewing changes to m4/reorganization/linker_checks.m4

  • Committer: Package Import Robot
  • Author(s): Scott Kitterman
  • Date: 2014-07-15 01:08:10 UTC
  • mfrom: (0.35.47 sid)
  • Revision ID: package-import@ubuntu.com-20140715010810-ru66ek4fun2iseba
Tags: 0.98.4+dfsg-2~ubuntu13.10.1
https://launchpad.net/bugs/1341962
No-change backport to saucy (LP: #1341962)

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m4/reorganization/linker_checks.m4
 
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dnl Linker feature checks
 
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dnl check for version script support in the linker (GNU ld, or Solaris ld style)
 
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AC_CACHE_CHECK([for ld --version-script], [ac_cv_ld_version_script], [dnl
 
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  cat > conftest.c <<EOF
 
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void cl_symbol1(void) {}
 
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void cli_symbol2(void) {}
 
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EOF
 
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  cat > conftest.map <<EOF
 
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RELEASE
 
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{
 
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        global:
 
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                cl_*;
 
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        local:
 
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                *;
 
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};
 
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PRIVATE
 
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{
 
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        global:
 
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                cli_*;
 
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        local:
 
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                *;
 
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};
 
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EOF
 
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  dnl check for GNU ld style linker version script
 
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  if AC_TRY_COMMAND([${CC-cc} $CFLAGS $pic_flag $LDFLAGS -shared
 
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                                -o conftest.so conftest.c
 
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                                -Wl,--version-script,conftest.map
 
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                       1>&AS_MESSAGE_LOG_FD]);
 
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  then
 
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      VERSIONSCRIPTFLAG=--version-script
 
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      ac_cv_ld_version_script=yes
 
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  else
 
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        dnl check for Solaris ld style linker version script
 
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        if AC_TRY_COMMAND([${CC-cc} $CFLAGS $pic_flag $LDFLAGS -shared
 
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                                -o conftest.so conftest.c
 
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                                -Wl,-M,conftest.map
 
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                        1>&AS_MESSAGE_LOG_FD]);
 
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        then
 
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                VERSIONSCRIPTFLAG=-M
 
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                ac_cv_ld_version_script=yes;
 
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        else
 
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                ac_cv_ld_version_script=no
 
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        fi
 
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  fi
 
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 rm -f conftest*])
 
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AC_SUBST([VERSIONSCRIPTFLAG])
 
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AM_CONDITIONAL([VERSIONSCRIPT], test "x$ac_cv_ld_version_script" = "xyes")