diff options
Diffstat (limited to 'build_common.sh')
-rw-r--r-- | build_common.sh | 103 |
1 files changed, 79 insertions, 24 deletions
diff --git a/build_common.sh b/build_common.sh index 8ace59e4..a803957a 100644 --- a/build_common.sh +++ b/build_common.sh @@ -30,26 +30,19 @@ mktempdir_diy() { mktempdir() { mktempdir_prefix=${1:-tmp} # shellcheck disable=SC2006 - case `uname -s` in - Darwin|FreeBSD|NetBSD) + case `os_id` in + Darwin-*|FreeBSD-*|NetBSD-*) # In these operating systems mktemp(1) always appends an implicit # ".XXXXXXXX" suffix to the requested template when creating a # temporary directory. mktemp -d -t "$mktempdir_prefix" ;; - AIX) - mktempdir_diy "$mktempdir_prefix" + SunOS-5.10|SunOS-5.11) + # Although the suffix is optional, specify it for consistent results. + mktemp -d -t "${mktempdir_prefix}.XXXXXXXX" ;; - SunOS) - # shellcheck disable=SC2006 - case `uname -r` in - 5.10|5.11) - mktemp -d -t "${mktempdir_prefix}.XXXXXXXX" - ;; - *) - mktempdir_diy "$mktempdir_prefix" - ;; - esac + SunOS-*|AIX-*) + mktempdir_diy "$mktempdir_prefix" ;; *) # At least Linux and OpenBSD implementations require explicit trailing @@ -61,13 +54,16 @@ mktempdir() { print_sysinfo() { uname -a + printf 'OS identification: ' + os_id date } # Try to make the current C compiler print its version information (usually # multi-line) to stdout. # shellcheck disable=SC2006 -print_cc_version() { +cc_version_nocache() { + : "${CC:?}" case `basename "$CC"` in gcc*|egcc*|clang*) # GCC and Clang recognize --version, print to stdout and exit with 0. @@ -86,16 +82,16 @@ print_cc_version() { "$CC" -V 2>&1 || : ;; cc) - case `uname -s` in - SunOS) + case `os_id` in + SunOS-*) # Most likely Sun C. "$CC" -V 2>&1 || : ;; - Darwin) + Darwin-*) # Most likely Clang. "$CC" --version ;; - Linux|FreeBSD|NetBSD|OpenBSD) + Linux-*|FreeBSD-*|NetBSD-*|OpenBSD-*) # Most likely Clang or GCC. "$CC" --version ;; @@ -107,11 +103,23 @@ print_cc_version() { esac } +# shellcheck disable=SC2006 +cc_version() { + echo "${cc_version_cached:=`cc_version_nocache`}" +} + +print_cc_version() { + cc_version + printf 'Compiler identification: ' + cc_id +} + # For the current C compiler try to print a short and uniform identification # string (such as "gcc-9.3.0") that is convenient to use in a case statement. # shellcheck disable=SC2006 -cc_id() { - cc_id_firstline=`print_cc_version | head -1` +cc_id_nocache() { + cc_id_firstline=`cc_version | head -1` + : "${cc_id_firstline:?}" cc_id_guessed=`echo "$cc_id_firstline" | sed 's/^.*clang version \([0-9\.]*\).*$/clang-\1/'` if [ "$cc_id_firstline" != "$cc_id_guessed" ]; then @@ -138,6 +146,17 @@ cc_id() { fi } +# shellcheck disable=SC2006 +cc_id() { + echo "${cc_id_cached:=`cc_id_nocache`}" +} + +# Call this function each time CC has changed. +discard_cc_cache() { + cc_version_cached= + cc_id_cached= +} + # For the current C compiler try to print CFLAGS value that tells to treat # warnings as errors. # shellcheck disable=SC2006 @@ -157,6 +176,42 @@ cc_werr_cflags() { esac } +# Tell whether "gcc" is a symlink to Clang (this is the case on macOS). +# shellcheck disable=SC2006 +gcc_is_clang_in_disguise() { + case `cc_id`/`basename "${CC:?}"` in + clang-*/gcc) + return 0 + ;; + esac + return 1 +} + +# shellcheck disable=SC2006 +os_id() { + # OS does not change between builds or in the middle of a build, so it is + # fine to cache uname output. + : "${os_id_sysname:=`uname -s`}" + printf '%s-' "$os_id_sysname" + : "${os_id_release:=`uname -r`}" + case "$os_id_sysname" in + AIX) + : "${os_id_version:=`uname -v`}" + echo "${os_id_version}.${os_id_release}" + ;; + Darwin|NetBSD|OpenBSD|SunOS) + echo "$os_id_release" + ;; + FreeBSD|Linux) + # Meaningful version is usually the substring before the first dash. + echo "$os_id_release" | sed 's/^\([0-9\.]*\).*$/\1/' + ;; + *) + echo 'UNKNOWN' + ;; + esac +} + increment() { # No arithmetic expansion in Solaris /bin/sh before 11. echo "${1:?} + 1" | bc @@ -177,8 +232,8 @@ run_after_echo() { print_so_deps() { # shellcheck disable=SC2006 - case `uname -s` in - Darwin) + case `os_id` in + Darwin-*) run_after_echo otool -L "${1:?}" ;; *) @@ -202,7 +257,7 @@ handle_matrix_debug() { purge_directory() { # shellcheck disable=SC2006 - if [ "`uname -s`" = SunOS ] && [ "`uname -r`" = 5.11 ]; then + if [ "`os_id`" = SunOS-5.11 ]; then # In Solaris 11 /bin/sh the pathname expansion of "*" always includes # "." and "..", so the straightforward rm would always fail. ( |