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authorBruce Richardson <bruce.richardson@intel.com>2018-01-25 11:14:43 +0000
committerBruce Richardson <bruce.richardson@intel.com>2018-01-30 21:59:00 +0100
commit45775d75128e0ecb4dca5aee217e37921e033527 (patch)
tree5fa58d221d74880adfeeb4e798ee6788409c8d8c /buildtools
parent69faa6907c1f213d44e2e040bfcd797ad81efbb0 (diff)
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drivers: improve pmdinfo generation with meson
Since meson 0.44, changing any file inside a PMD directory (quite correctly) triggers a full re-run of meson on build, rather than an incremental build as with earlier versions. This rerun is needed because we use "grep" in meson to search for files on which to run pmdinfogen, and changing any of those files means that grep and, therefore meson, needs to be rerun. [Previous versions of meson did not track this dependency on the grep command, and so did incremental builds only.] If, however, we take advantage of pmdinfogen's ability to use stdin and stdout instead of files, we can instead use a shell script to process an entire static archive and generate a single .c file from it. This eliminates the need for grep, and means that changes to a PMD file only need an incremental build - a significant time saving. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Diffstat (limited to 'buildtools')
-rwxr-xr-xbuildtools/gen-pmdinfo-cfile.sh9
1 files changed, 5 insertions, 4 deletions
diff --git a/buildtools/gen-pmdinfo-cfile.sh b/buildtools/gen-pmdinfo-cfile.sh
index 565e089..0b6dc2c 100755
--- a/buildtools/gen-pmdinfo-cfile.sh
+++ b/buildtools/gen-pmdinfo-cfile.sh
@@ -6,7 +6,8 @@ arfile=$1
output=$2
pmdinfogen=$3
-tmp_o=${output%.c.pmd.c}.tmp.o
-
-ar p $arfile > $tmp_o && \
- $pmdinfogen $tmp_o $output
+echo > $output
+for ofile in `ar t $arfile` ; do
+ ar p $arfile $ofile | $pmdinfogen - - >> $output 2> /dev/null
+done
+exit 0