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Tweak AX_CHECK_COMPILE_FLAG to also try to link the test program

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This commit is contained in:
Frank Denis 2016-12-29 07:51:50 +01:00
parent 4e8832ed57
commit f31a4b759d
2 changed files with 7 additions and 11 deletions
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14
configure.ac
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@ -36,6 +36,7 @@ AC_SUBST(SODIUM_LIBRARY_VERSION_MINOR)
AC_SUBST(SODIUM_LIBRARY_VERSION)
AC_SUBST(DLL_VERSION)
AC_LANG_ASSERT(C)
LX_CFLAGS=${CFLAGS-NONE}
dnl Path check
@ -180,19 +181,14 @@ AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],
[CFLAGS="$CFLAGS -fvisibility=hidden"])
AS_CASE([$host_os], [cygwin*|mingw*|msys|pw32*|cegcc*], [ ], [
AX_CHECK_COMPILE_FLAG([-fPIC], [
AX_CHECK_LINK_FLAG([-fPIC],
[CFLAGS="$CFLAGS -fPIC"]
)
])
AX_CHECK_COMPILE_FLAG([-fPIC], [CFLAGS="$CFLAGS -fPIC"])
])
AS_IF([test "$enable_pie" != "no"],[
AX_CHECK_COMPILE_FLAG([-fPIE], [
AX_CHECK_LINK_FLAG([-fPIE],
[AX_CHECK_LINK_FLAG([-pie],
[CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie"])
AX_CHECK_LINK_FLAG([-pie], [
[CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie"]
])
])
])

4
m4/ax_check_compile_flag.m4
View File

@ -61,8 +61,8 @@ AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
[[char x[42U], fodder = 0;if (fodder > -1000 && fgets(x,1000,stdin)) puts(x)]])],
AC_TRY_LINK([#include <stdio.h>],
[char x[42U], fodder = 0;if (fodder > -1000 && fgets(x,1000,stdin)) puts(x)],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])
_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])