diff options
| author | Alexey Neyman <stilor@att.net> | 2017-03-12 13:16:18 -0700 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2017-03-15 13:26:13 -0700 |
| commit | e37fc4aa68317bff9d3f668da1c0779d283dab51 (patch) | |
| tree | 4795670a58801cf38bebd1beb3ef6dec28a0e55a /configure.ac | |
| parent | b36a65e5cadc201eb840e2b7716ae878e5c3533f (diff) | |
Fix combreloc test with BSD grep
The test for "-z combreloc" fails when cross-compiling on a machine
that uses BSD grep (e.g. on macos). grep complains about empty
subexpression and exits with non-zero status, which is interpreted
by configure as "not found". As a result, support for "-z combreloc"
(HAVE_Z_COMBRELOC) is not detected, leading to link failure on SPARC.
While there, replace fgrep with 'grep -F', as fgrep is non-POSIX.
* configure.ac: Avoid empty subexpression in grep.
Signed-off-by: Alexey Neyman <stilor@att.net>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/configure.ac b/configure.ac index 4a77411b71..4981bf9691 100644 --- a/configure.ac +++ b/configure.ac @@ -1390,8 +1390,8 @@ dnl The following test is a bit weak. We must use a tool which can test dnl cross-platform since the gcc used can be a cross compiler. Without dnl introducing new options this is not easily doable. Instead use a tool dnl which always is cross-platform: readelf. To detect whether -z combreloc -dnl look for a section named .rel.dyn. - if $READELF -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then +dnl look for a section named .rel.dyn or .rela.dyn. + if $READELF -S conftest.so | grep -E '.rela?.dyn' > /dev/null; then libc_cv_z_combreloc=yes else libc_cv_z_combreloc=no @@ -1586,7 +1586,7 @@ void zero (void *x) } EOF dnl -if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); +if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | grep -F "memset" > /dev/null]); then libc_cv_gcc_builtin_memset=no else @@ -1606,7 +1606,7 @@ char *foo (const char *a, const char *b) } EOF dnl -if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); +if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | grep -F "my_strstr" > /dev/null]); then libc_cv_gcc_builtin_redirection=yes else @@ -1747,7 +1747,7 @@ typedef struct { extern const Ehdr __ehdr_start __attribute__ ((visibility ("hidden"))); long ehdr (void) { return __ehdr_start.val; } ])], - [if $READELF -r conftest | fgrep __ehdr_start >/dev/null; then + [if $READELF -r conftest | grep -F __ehdr_start >/dev/null; then libc_cv_ehdr_start=broken else libc_cv_ehdr_start=yes |